Portland Renovation — Oregon CCB Licensing, BDS Permits, Historic Landmark Commission

Portland renovation runs through three gates most homeowners don't see until the first bid comes back wrong. The Oregon Construction Contractors Board (CCB) licenses every paid contractor in the state under ORS Chapter 701 — without the license number, bond, and insurance on file, the contract is legally unenforceable in your favor.¹ The Portland Bureau of Development Services (BDS) handles permits, plan-check, and inspections for everything from a new circuit to a second-story addition.² And if your home sits in Ladd's Addition, the Alphabet District, Eastmoreland, Irvington, Laurelhurst, or any of Portland's National Register historic districts, the Historic Landmark Commission (HLC) reviews exterior changes before BDS will issue a permit.³

Layered on top: a 2021 zoning rewrite that made duplexes, triplexes, and fourplexes by-right on most single-family lots,⁴ the toughest tree protection code on the West Coast,⁵ Cascadia subduction-zone seismic requirements that catch every pre-1980 wood-frame house, a rainy season that punishes bad flashing and ventilation, and EPA lead-paint rules that make pre-1978 homes a specialized job.⁶

This is the operating reality. Angi sends your project to twelve strangers. Baily sends it to one Oregon CCB-licensed builder who has passed Portland BDS plan-check and worked through HLC review on Portland historic property. Here is what separates a Portland renovation that closes on time from one that stalls for six months at BDS intake.

Oregon CCB licensing — ORS Chapter 701 and bonding

Every contractor who performs residential or commercial construction work in Oregon — and gets paid for it — must hold an active Oregon Construction Contractors Board license. This is not optional, it is not waivable, and it is the first thing to verify before any Portland remodel conversation goes further than a phone call. ORS Chapter 701 codifies the requirement, defines license endorsements, and sets the surety bond and insurance minimums.¹

The CCB issues four endorsement categories that matter for Portland homeowners:

• Residential General Contractor — the broadest endorsement, authorized for residential structures up to four units. Most Portland remodel firms hold this endorsement. Surety bond minimum $20,000.
• Residential Specialty Contractor — narrower trade scope (for example, a plumbing-only or roofing-only outfit). Surety bond minimum $15,000. Not a replacement for a GC on whole-house work.
• Home Inspector — separate certification, important for purchase due diligence and for scoping renovation work on an older Portland home before demolition reveals surprises.
• Locksmith — niche endorsement, relevant to access-control scope on larger residential projects.

Commercial endorsements carry higher bond requirements. The CCB also tracks disciplinary history, consumer complaints, and financial responsibility. A contractor can be actively licensed but have open complaints — the license alone is a floor, not a ceiling.

Every written contract for residential construction in Oregon must disclose the CCB license number, bond information, and liability insurance carrier. If a Portland contractor hands you a quote without those three things printed on the document, walk away. That is not a paperwork oversight — it is a signal the contractor either is not current or is operating outside the statute.

Verification takes ninety seconds at oregon.gov/ccb/license-search. Type the business name or license number, confirm the endorsement matches the scope of your project, check bond status, and review any complaints filed in the last three years.¹ Baily runs this check before any Portland introduction — license status, bond currency, complaint history, endorsement match to scope — and will not route a match to a contractor whose license lapsed or whose endorsement is narrower than the project requires.

The owner-builder exemption is narrow. If you personally do work on your own primary residence, you don't need a CCB license — but you take on warranty liability, code-compliance liability, and you cannot hire unlicensed help or pay yourself. Most Portland homeowners who try to stretch this exemption into a GC role regret it at the refinance or sale stage, when an unpermitted addition surfaces and the retroactive permit process begins.

Portland Bureau of Development Services permit path

Portland BDS is where the permit, plan-check, and inspection process lives. The 1900 SW 4th Avenue office and the BDS online permitting portal together handle every residential building, electrical, plumbing, and mechanical permit issued inside city limits.²

Permit triggers for residential work are broader than most Portland homeowners assume:

• Structural changes — removing or modifying a load-bearing wall, adding square footage, altering the foundation, framing a dormer, or cutting a new roof opening for a skylight past a certain size.
• Electrical work — adding any new circuit, upgrading the main service panel, or rerouting branch circuits. Even like-for-like receptacle swaps trigger inspection if the circuit is modified. Licensed electrician required; homeowner self-permit for electrical on owner-occupied primary residence is allowed but inspection still required.
• Plumbing work — adding fixtures, moving drain lines, extending supply lines, or altering the venting. Same logic as electrical — homeowner exemption for primary residence, but inspection always required.
• Mechanical / HVAC — replacing a furnace, installing a heat pump (increasingly common in Portland as electrification accelerates), ducted system modifications, water heater replacement, gas line changes.
• Roofing replacement — full tear-off and re-roof requires permit. Oregon's wet climate makes flashing, ice-and-water shield at eaves, and proper underlayment non-negotiable.
• Window replacement — energy code compliance triggers when U-factor or SHGC changes; full window replacement requires permit even when sizes match.
• Decks — any deck more than 30 inches above grade at any point requires permit, structural plan, and inspection. Ledger attachment, post footings, and railing height (36 inches minimum residential) are the most common inspection fails.
• ADUs, additions, and whole-house renovations — full plan-check, structural engineering stamps where triggered, energy code compliance documentation.

The permit path follows a predictable sequence: pre-application (optional for complex scope), intake and completeness check, plan-check review (3-8 weeks typical for single-family residential), permit issuance with conditions, rough inspection milestones (framing, rough electrical, rough plumbing, rough mechanical, insulation), final inspections, and certificate of occupancy where applicable. Every step has a published BDS fee schedule.²

Plan-check timelines compress or stretch based on completeness of the submittal. A set of drawings that includes structural calculations, energy code forms, site plan with tree protection where triggered, and Historic Landmark Commission findings (if applicable) moves through intake in a single pass. A submittal missing any of those typically bounces back within a week and restarts the clock.

Historic Landmark Commission — National and local districts

Portland's HLC reviews exterior alterations, additions, and demolitions on designated historic properties and contributing structures inside historic districts.³ This is the single biggest delta between a Portland remodel and a comparable remodel in a non-designated neighborhood — both in timeline and in cost.

The districts under HLC jurisdiction break into two layers:

National Register Historic Districts (federal designation, reviewed under Portland Zoning Code Chapter 33.445):

• Skidmore/Old Town Historic District — cast-iron storefronts, primarily commercial but includes residential above-retail.
• 13th Avenue Historic District — mixed residential and commercial.
• Yamhill Historic District — downtown-adjacent, mixed use.
• Plus 25-plus individually listed National Register properties scattered across the city.

Local conservation and historic districts (city designation):

• Ladd's Addition — the diagonal-grid heart of SE Portland, rose gardens, American Foursquare and Craftsman housing stock. One of the strictest review environments in the city.
• Irvington — NE Portland, Craftsman and Colonial Revival, Portland's largest local historic district by contributing structure count.
• Laurelhurst — SE Portland, planned 1909 neighborhood, Craftsman and Tudor.
• Eastmoreland — SE Portland, 1910s-1930s housing stock around Reed College. Active conservation organization, detailed review.
• Alphabet District — NW Portland, Victorian and early-20th-century housing, named streets alphabetized. High-value renovation market.
• King's Hill — SW Portland adjacent to Washington Park, Queen Anne and Colonial Revival.
• Historic Resource Inventory — a separate, broader list of individually significant properties with more limited review protections.

Review tiers run three levels:

• Type I (administrative) — minor projects, staff-level review, typical 2-6 weeks. Paint color changes in most districts, in-kind window repair, minor site work.
• Type II (committee) — major projects, HLC hearing, typical 2-4 months. Additions visible from the street, window replacement (not repair), exterior material changes, garage additions, demolition of non-contributing accessory structures.
• Type III (City Council) — appeals of Type II decisions, landmark designation cases, major demolition. Rare but material when triggered.

HLC review focuses on exterior, publicly visible elements — roof form, massing, cladding, fenestration (window patterns), porch elements, trim profiles. Interior work is generally outside HLC jurisdiction, which is the single most important distinction for Portland historic-district homeowners. A gut-renovated kitchen behind a preserved front facade is entirely feasible. A new bay window on the front elevation of a Ladd's Addition contributing structure is a Type II hearing.

A contractor without HLC experience will submit, get bounced, resubmit, and burn six months before construction begins. A contractor with HLC experience knows which submittal package the committee expects, which material substitutions read as appropriate in Ladd's Addition versus Irvington versus Alphabet, and which battles are winnable in pre-application meetings with BDS historic preservation staff.

Residential Infill Project (RIP) 2021 — plex by-right

Portland's 2021 Residential Infill Project (RIP) fundamentally rewrote what can be built on a Portland residential lot.⁴ On most R5 and R2.5 zones — the former single-family zoning that covered the majority of residential Portland — duplexes, triplexes, and in many cases fourplexes are now permitted by-right without a conditional use hearing. Form-based design standards govern height, setbacks, and massing; the number of dwelling units is not the gating question.

For homeowners, RIP changes the renovation conversation in three ways:

• Existing single-family on an eligible lot can be renovated plus a detached ADU plus an additional dwelling conversion inside the existing footprint, approaching plex density without a full demolition.
• Lot value repricing means a Portland single-family lot now trades at plex development potential, which affects both cost basis for renovation-versus-rebuild decisions and comparable sale data for appraisal.
• Historic district overlay still governs exterior form in designated districts even when RIP allows additional units. HLC review does not disappear because zoning allows more density.

RIP does not apply uniformly. Overlay zones — environmental, flood, historic — add layers. Lots smaller than the minimum for the zone may be limited. An experienced Portland contractor reads RIP zoning plus overlay plus tree code plus historic review together, not as separate questions.

ADU rules — by-right, owner-occupancy eliminated

Portland ADUs are by-right on most residential lots subject to form-based standards.² The 2020 elimination of the owner-occupancy requirement means a Portland homeowner can build an ADU, rent both the primary and the ADU, and live elsewhere — which repositioned ADU economics across the city.

Standards to plan around:

• Typical maximum ADU size is 800 square feet, with some zones allowing more.
• Height and setback rules vary by zone and by whether the ADU is attached (conversion of existing space, addition) or detached (new structure in rear yard).
• One off-street parking space may be required depending on zone and proximity to frequent transit.
• Short-term rental (Airbnb / VRBO) of an ADU requires a separate Accessory Short-Term Rental permit from BDS.
• Historic district ADUs remain subject to HLC review when the structure is visible from a public right-of-way.

A Portland ADU project on a 5,000-square-foot lot in Ladd's Addition, with HLC review, can run 12-18 months from design start to certificate of occupancy. The same 800-square-foot ADU on a 5,000-square-foot lot in a non-designated neighborhood runs 8-12 months.

Tree Code Title 11

Portland's Title 11 Tree Code is the strictest tree protection ordinance on the West Coast and catches more renovation projects than homeowners expect.⁵ The rule set applies to:

• Private property trees over a size threshold (varies by zone and by tree species, generally 12-inch DBH and up for most cases).
• Development-triggered review — when building, demolition, or site permits are pulled, tree inventory, protection zones, and mitigation planting requirements activate.
• Street trees in the right-of-way adjacent to your lot, separately regulated with their own removal and planting permits.

Removal of a regulated tree requires a permit and, in most cases, either replanting at a specified ratio or payment into the city tree fund. The tree protection zone during construction — typically a circle with radius equal to one foot per inch of trunk diameter — must be fenced, and grading, trenching, or material storage inside that zone can trigger fines that exceed the original tree removal fee.

For renovation projects, the practical application: any scope that adds foundation footprint, runs new utility trenches, or stages material on a lot with a regulated tree needs a tree plan before BDS will issue the building permit. Large-canopy species near the construction envelope are frequently the gating item on whole-house renovations in older neighborhoods.

Cascadia seismic and cripple-wall retrofit reality

Portland sits on the Cascadia subduction zone, and Oregon's residential seismic provisions have tightened materially over the last two decades.⁷ For renovation work, the key realities:

• Pre-1980 wood-frame houses — particularly those with cripple-wall construction (a short framed wall between the foundation and the first floor) — frequently need retrofit during any significant renovation that triggers structural review. Cripple-wall bracing with plywood sheathing plus foundation bolting to anchor the sill plate to the concrete foundation is the standard retrofit.
• Unreinforced masonry — chimneys, old foundation sections, garden walls — are seismic liabilities. Brick chimneys on pre-1950 Portland homes often fail to meet current code and are replaced with Class-A chimney liners or removed entirely during renovation.
• Soft-story conditions — a large garage opening or similar discontinuity on the ground floor of a two-story house creates a soft-story that concentrates seismic demand. Modern steel moment-frame or plywood shear-wall solutions exist but add cost.
• Oregon Residential Specialty Code (ORSC) 2023 — adopted statewide, incorporates seismic provisions that align in many respects with high-seismic-zone California practice.

A Portland renovation that opens up walls, modifies foundation, or adds floor area is the right time to retrofit. A renovation that tries to skip the retrofit to save budget is the wrong renovation — the next owner's inspector will flag it, and the insurance and mortgage market for pre-1980 un-retrofitted Portland houses is increasingly tight.

Wet climate — drainage, ventilation, and envelope

Portland averages 36-plus inches of rainfall annually, concentrated October through May. Wet-climate construction is not a style choice; it is a life-safety and durability requirement.⁸

Non-negotiable elements:

• Roof and flashing — step flashing at sidewalls, kickout flashing at roof-wall intersections, proper underlayment (synthetic felt or ice-and-water shield at eaves), generous overhang. Poor flashing is the most common cause of Portland envelope failure.
• Siding and rain-screen — a drainage gap behind cladding (rain-screen assembly) dramatically improves wall drying. Fiber-cement, wood, and composite claddings all benefit; vinyl is less common on quality Portland work.
• Foundation drainage — perimeter drain tile, proper grading away from the house, and capillary break between foundation and sill plate. Clay-heavy soils in many Portland neighborhoods make drainage design central to basement and crawl-space durability.
• Ground-water concerns — low-elevation pockets of the inner SE (Sellwood and nearby) and parts of N Portland have chronic ground-water issues. Sump pumps, interior French drains, and in some cases full basement waterproofing are standard on older homes in these areas.
• Ventilation — bath and kitchen exhaust to the exterior, not to the attic. Crawl-space ventilation (or conditioned crawl-space assemblies) and attic ventilation to prevent condensation and mold. HRV or ERV systems increasingly standard on tight modern envelopes.
• Wildfire smoke — the 2020 and subsequent smoke seasons moved MERV-13 HVAC filtration and sealed envelopes from optional to expected on quality Portland renovations.

A Portland contractor who builds to California or Arizona detailing will leak water within three winters. This is why local experience matters more than national brand on a Portland remodel.

Pre-1978 lead, asbestos, knob-and-tube

Most of Portland's historic housing stock predates the materials and electrical reforms of the late 20th century, and four hazards concentrate in pre-1978 homes:

• Lead-based paint — any home built before 1978 is presumed to contain lead paint until tested. The federal EPA Renovation, Repair, and Painting (RRP) Rule requires lead-safe work practices and certified contractors on any paid renovation that disturbs more than six square feet of interior painted surface (twenty square feet exterior).⁶ Portland's older housing stock means RRP certification is table stakes for any Portland GC doing pre-1978 work. A contractor without current RRP certification on a 1910 Alphabet District bungalow is a non-starter.
• Asbestos — common in 1940s-1970s Portland homes. Textured "popcorn" ceilings, vinyl floor tile and mastic, pipe insulation, and siding (particularly transite board) all can contain asbestos. Oregon DEQ regulates abatement; licensed abatement contractors handle removal, and survey-before-demo is standard on any pre-1980 renovation that disturbs these materials.
• Knob-and-tube wiring — pre-1950 Portland homes often still have original knob-and-tube circuits. Insurance carriers increasingly refuse to write policies on homes with active knob-and-tube, and mortgage lenders may require replacement as a condition of closing. Partial replacement is rarely sufficient — a full rewire is the typical path.
• Galvanized and lead supply plumbing — pre-1960 homes frequently have galvanized steel supply lines (corroded, low flow) or in some cases lead service lines. Full supply-side replumb is standard on whole-house renovations in older Portland neighborhoods.

Budget and scope conversations that do not explicitly address these four items on a pre-1978 Portland home are budgets that will run over. A realistic Portland renovation contractor puts a line item for each on the first-pass estimate.

Oregon Reach Code and 2023 residential energy

Oregon operates at the leading edge of residential energy code. The Oregon Residential Specialty Code (ORSC) 2023 base standard runs roughly 30 percent better envelope performance than the 2018 IECC baseline — meaning more insulation, tighter air sealing, and better windows than most contractors trained in other states are accustomed to specifying.⁹

Layered above the base:

• Oregon Reach Code (ORSC-Reach) — a voluntary stricter standard that some clients adopt for certification, incentive eligibility, or owner preference. Roughly comparable to Passive House principles at the envelope level without full PHIUS certification requirements.
• City of Portland Green Code Updates — additional local amendments and green building requirements, particularly on commercial and multifamily but with residential implications.
• Federal IRA tax credits and Portland/state incentives — heat pump water heaters, heat pump space heating, insulation, and window upgrades often qualify for stacked federal plus state plus utility incentives. Portland General Electric and Pacific Power each run residential incentive programs worth reviewing before equipment selection.

For a renovation scope that triggers energy code compliance — window replacement, wall insulation, HVAC replacement, additions — the ORSC 2023 details (continuous exterior insulation in many assemblies, air sealing with blower-door verification, duct leakage testing) are standard-issue. A contractor pricing Portland work off a Phoenix or Dallas energy model is underpricing envelope and mechanical line items by meaningful percentages.

Cost bands $200-$1,000 per square foot by district and scope

Portland renovation cost in 2026 falls into bands driven by neighborhood, scope, and historic designation:

• Light renovation in non-historic Portland neighborhoods (interior cosmetic, minor kitchen and bath, flooring, paint, some systems updates): $200-$350 per square foot. Representative neighborhoods: outer SE, outer NE, parts of N Portland, most of outer W Portland.
• Historic district renovation (Ladd's Addition, Alphabet, Eastmoreland, Irvington, Laurelhurst, King's Hill): $300-$600 per square foot. The HLC premium reflects slower timelines, specialty materials (matching original window profiles, cladding, trim), specialty labor (finish carpenters with Craftsman and Victorian experience), and the higher cost of preserving rather than replacing.
• Premium whole-home in West Hills, Forest Park, Council Crest, and comparable high-value Portland markets: $500-$1,000 per square foot. Reflects high finish levels, complex sites (steep slopes, geotechnical considerations, access constraints), and market expectations for fit-and-finish.
• Typical 2,000-square-foot Portland renovation: $400,000 to $1,200,000 total, depending on where the scope sits on the above bands.

These bands assume licensed CCB contractor, permitted work, and quality materials. Cash-deal work from non-licensed help will price lower and cost more over the life of the home — at refinance, sale, or insurance renewal.

Timeline — 6 to 16 months from CCB selection to certificate of occupancy

Realistic Portland renovation timelines:

• CCB contractor selection and contract — 2-4 weeks, assuming clear scope and competitive bidding.
• Design and construction documents — 6-12 weeks for a standard remodel, longer for additions or major reconfiguration.
• BDS plan-check — 6-14 weeks, depending on scope complexity and submittal completeness.
• HLC review if applicable — 2-4 months for Type I / II. Type III appeals add 2-3 months on top.
• Construction — 4-12 months depending on scope. A kitchen and two baths with minor systems work runs 4-6 months; a full whole-home renovation with addition runs 9-12 months; a historic-district renovation with structural and HLC scope runs 10-14 months.
• Final inspections and CofO — 2-4 weeks from substantial completion.

Total: 6-16 months from first CCB conversation to occupancy. A Portland contractor who promises 4 months on a scope that realistically runs 10 is either underpricing, under-scoping, or about to miss the date.

What Baily verifies before any Portland match

Angi sends your information to twelve contractors. Baily sends it to one Oregon CCB-licensed builder who has cleared the filters that matter on a Portland project:

• Active CCB license with endorsement matching scope — verified against oregon.gov/ccb, not self-reported.
• Current $20,000 surety bond (Residential General) and active liability insurance — verified against CCB records.
• Complaint history clean for the last three years, or complaints reviewed and resolved.
• EPA RRP certification if the project is pre-1978.
• Asbestos survey and abatement protocol documented for pre-1980 homes.
• BDS permit history — demonstrated track record of completed, inspected, CofO-closed projects in Portland.
• Historic Landmark Commission experience for Ladd's Addition, Alphabet, Eastmoreland, Irvington, Laurelhurst, King's Hill, or any National Register property — Type I and Type II submittal experience, not just general remodel experience.
• Seismic retrofit experience for pre-1980 wood-frame houses.
• Wet-climate detailing — the contractor's portfolio shows rain-screen assemblies, proper flashing, drainage planning. Not a Phoenix GC in a Portland ZIP code.
• Oregon Reach Code familiarity — when the project trigger energy code, the contractor specs blower-door verification and continuous exterior insulation without prompting.

One licensed builder who has actually done this work in this city. That is the match. That is the difference between a Portland renovation that closes on time at the committed number and one that stalls for six months at BDS intake or two months at HLC.

Frequently asked questions

Does Oregon require a CCB license to renovate my Portland home?

The contractor needs a CCB license — Oregon Construction Contractors Board licensing under ORS Chapter 701 is mandatory for ANY paid contractor doing work in Oregon, with very narrow owner-builder exemptions. Verify license at oregon.gov/ccb/license-search before signing any contract; check that the surety bond is current ($20K minimum for Residential General Contractor) and no open complaints. As homeowner doing your own work on your own primary residence, you don't need a CCB license, but you take on warranty + code-compliance liability personally and you can't pay yourself or use unlicensed labor.

Does the Portland Historic Landmark Commission review interior renovation?

HLC jurisdiction is almost entirely exterior and publicly visible elements — roof form, massing, cladding, windows as seen from the street, porch elements, visible trim. Interior work in a Ladd's Addition or Alphabet District contributing structure is generally outside HLC review, which means a full interior gut renovation behind a preserved exterior facade is feasible without Type I or Type II hearing. The distinction matters because homeowners often assume historic designation blocks modernization; in most Portland cases it shapes exterior decisions while leaving interior reconfiguration open.

What does RIP 2021 mean for my single-family Portland lot?

The Residential Infill Project made duplexes, triplexes, and in many cases fourplexes permitted by-right on most R5 and R2.5 zones — the former single-family zoning that covers most of residential Portland. That means on an eligible lot you can renovate your existing home, add an ADU, and potentially add additional dwelling units without a conditional-use hearing. Overlay zones (historic, environmental, flood) still apply on top of RIP, and the Historic Landmark Commission review does not disappear because zoning allows more density. The practical effect for renovation is that Portland residential lots are now priced at plex-development potential, which affects both your cost basis and your comparable sale data.

Do I need to retrofit my pre-1980 Portland house for Cascadia?

Not mandatorily for an existing home with no trigger, but materially when renovation opens the opportunity. Pre-1980 wood-frame Portland homes — especially those with cripple-wall construction — frequently fail modern seismic standards. When a renovation exposes framing, modifies foundation, or adds floor area, the correct move is cripple-wall plywood bracing plus sill-plate bolting to anchor the house to the foundation. Skipping this on a scope that exposes the work is the wrong decision — the next buyer's inspector will flag it, insurance underwriters are increasingly strict, and the retrofit cost is materially lower when the walls are already open than when they are buttoned up.

Why does lead paint certification matter so much on Portland renovations?

Most of Portland's character housing stock predates 1978, which means lead-based paint is presumed until tested. The federal EPA RRP Rule requires lead-safe work practices and RRP-certified contractors on any paid renovation disturbing more than six square feet of interior painted surface or twenty square feet exterior. A Portland contractor without current RRP certification on a 1910 Alphabet District bungalow or a 1925 Ladd's Addition Craftsman cannot legally perform the work. The violations are federal, the fines are material, and the liability carries to the homeowner who hired an uncertified contractor. RRP certification is non-negotiable on pre-1978 Portland renovation.

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Footnotes

1. Oregon Revised Statutes Chapter 701 — Construction Contractors and Contracts; Oregon Construction Contractors Board license search and requirements. oregonlegislature.gov and oregon.gov/ccb. ↩ ↩² ↩³

2. Portland Bureau of Development Services — permit, plan-check, and inspection information; residential permit requirements. portland.gov/bds. ↩ ↩² ↩³ ↩⁴

3. Portland Historic Landmark Commission — historic district inventory, review procedures, Type I/II/III standards. portland.gov/bds/historic-resources. ↩ ↩²

4. Portland Residential Infill Project (RIP) — 2021 zoning reform enabling plex development by-right on most residential zones. portland.gov/bps/rip. ↩ ↩²

5. Portland City Code Title 11 — Trees, regulating tree removal, protection zones, and mitigation requirements citywide. portland.gov/trees. ↩ ↩²

6. U.S. Environmental Protection Agency Lead Renovation, Repair, and Painting (RRP) Rule — 40 CFR 745 Subpart E, federal certification requirements for pre-1978 housing renovation. epa.gov/lead. ↩ ↩²

7. Oregon Residential Specialty Code (ORSC) 2023 — seismic and structural provisions for residential construction statewide. oregon.gov/bcd. ↩

8. Oregon Residential Specialty Code — weatherization, drainage, and envelope requirements for wet-climate residential construction. ↩

9. Oregon Residential Specialty Code 2023 energy provisions and Oregon Reach Code — envelope, air sealing, mechanical, and duct requirements for residential construction. oregon.gov/bcd. ↩