Does the Austin Historic Landmark Commission (HLC) review apply to my project?

Historic Landmark Commission (HLC) review applies to any visible exterior alteration on a property within Austin's four local historic districts (Hyde Park, Castle Hill, Harthan Street, West Line), the seven National Register districts that have been adopted as local overlays (Judges Hill, Fairview Park, Swedish Hill, and others), and roughly 700 individually designated landmarks scattered across the city. A Certificate of Appropriateness (CofA) must issue before DSD will release the building permit.

The authority sits in Austin City Code 25-2-352 and the Historic Design Standards adopted by HLC in 2021 and updated in 2023. The standards differ by district and were modeled on the Secretary of the Interior's Standards for Rehabilitation, but Austin layered local specificity around materials (wood window restoration over replacement, original siding profile preservation) and massing (limited rear additions visible from the right-of-way, prohibited dormer additions on contributing structures).

CofA review tiers by scope. Administrative-level approvals — handled by HLC staff at the Historic Preservation Office — cover in-kind repair, like-material replacement, and reversible interior work. Turnaround is typically two to four weeks. Commission-level review, required for additions, demolition of any contributing structure, new construction within a district, and any change visible from the public right-of-way, runs four to twelve weeks and lands on a monthly HLC agenda.

Demolition of a contributing structure or designated landmark triggers the most demanding path. Under 25-2-352(C), the applicant must demonstrate either economic hardship (a high evidentiary bar requiring appraisals, rehabilitation cost estimates, and tax-abatement analysis) or that the structure has lost its historic integrity. HLC denials can be appealed to City Council, which adds another six to ten weeks.

The risk that catches owners by surprise is the post-permit appeal. Even after a CofA issues, neighbors with party-status standing can appeal to Council under 25-1-181, and a successful appeal voids the permit mid-construction. Engage HLC staff for a pre-application courtesy review before final design — Austin's preservation office is unusually willing to flag fatal flaws early, which is far cheaper than redesigning after a public hearing.