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Cumplimiento Title 24 en California — Guía 2026

Title 24 es el código energético de California. Obliga desde 1978 que toda construcción cumpla estándares de eficiencia en envelope, HVAC, water heating, lighting, y renewables. Esta guía explica qué aplica en tu proyecto LA específico.

Autor: Netanel Presman — CSLB RMO #1105249 · Actualizado 2026-04-18

Los 6 componentes de Title 24

1. Envelope. Insulation (walls R-15 typical LA, attic R-38, raised floor R-19), windows (U-factor ≤ 0.30, SHGC ≤ 0.22 en climate zones 6/8/9 de LA), infiltración sealing, radiant barrier en algunas zonas. La envelope performance es el single biggest driver del energy budget.

2. HVAC. Equipment efficiency ratings mínimos (heat pumps SEER2 ≥ 15.2, HSPF2 ≥ 7.8 para LA climate zones), duct leakage ≤ 5% para new ducts, duct insulation R-8 mínimo, proper sizing per Manual J, proper commissioning. Post-2025, electric heat pumps son heavily encouraged; gas furnaces penalized en performance path.

3. Water heating. Baseline prescriptive es gas tankless. Electric heat pump water heater es preferred por performance path (saves 60%+ energy vs gas). Tank water heaters permitidos solo para new construction en limited circumstances.

4. Lighting. Interior lighting debe ser high-efficacy LED (≥ 45 lumens per watt típicamente). Permanent lighting debe tener controls (dimmers, occupancy sensors en ciertos rooms). Exterior lighting requires controls (motion sensor o photocell timer).

5. Appliances y plug loads. New SFR debe prewire para EV charging (Level 2, 240V 40A minimum). Induction cooking encouraged. ENERGY STAR appliances prescriptive baseline para multifamily.

6. Renewable energy. Solar PV mandatory para new SFR desde 2020 (minimum system size calculated per CFA square footage). 2025 amendments encourage battery storage via compliance credits. Net metering rules bajo NEM 3.0 cambian la economía del solar — budget integration más sophisticated.

Climate Zones de LA County

California divide el state en 16 climate zones. LA County tiene tres: Zone 6 (Pacific coast — Santa Monica, Venice, Palisades, Brentwood, Malibu), Zone 8 (South Coast valleys — most of LA City Basin, Hollywood, DTLA, South LA, Long Beach), y Zone 9 (South Coast Valleys interior — San Fernando Valley, Pasadena, San Gabriel Valley). Cada zone tiene thresholds distintos para insulation, window performance, y HVAC sizing. Zone 9 (hot valley) tiene los stricter cooling requirements; Zone 6 (mild coast) tiene más flexibility.

Los 7 pasos del Title 24 compliance process

  1. Paso 1
    Identify Title 24 scope

    Determine si tu proyecto aplica component-level, full envelope, o full Title 24. Baily te dice según tu alcance.

  2. Paso 2
    Hire Certified Energy Analyst (CEA)

    El CEA corre el Title 24 compliance modeling usando software CEC-approved (Micropas, EnergyPro, CBECC-Res).

  3. Paso 3
    Select performance vs prescriptive path

    Decide entre cumplir cada component individualmente o usar whole-building energy budget modeling.

  4. Paso 4
    Document en CF1R

    CEA genera el CF1R form con todos los specs — envelope, HVAC, water heating, lighting, appliances, renewables.

  5. Paso 5
    Submit a LADBS con plan set

    CF1R se incluye en el plan set submission a LADBS. Plan checker verifica compliance antes de emitir permit.

  6. Paso 6
    Field verification durante construction

    Insulation inspection, duct leakage test, blower door test si aplica. HERS Rater certifica algunos measures.

  7. Paso 7
    Final CF2R + CF3R forms

    CF2R (Installation Certificate) y CF3R (Field Verification) documentan installation real. Required para Certificate of Occupancy.

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Origin

Who is Baily?

Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.

He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.

That’s what we wanted our AI to do. Every inbound call and text has signal in it — a homeowner’s real question, a timeline, a budget, a hesitation that means “yes but.” Baily listens to every one, 24/7, and finds the beads of light.

Baily was a businessman before he was a scientist. That’s our vibe too.

Questions LA homeowners actually ask