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Title 24 Energy Compliance Process LA (2026)

Last Updated: May 10, 2026 · Reviewed by Netanel Presman, CSLB #1105249

Title 24 Part 6 is California's energy code. Every construction permit in LA requires T24 compliance documentation — even bathroom remodels (if you're adding circuits) and window replacements. The process has 3 forms (CF1R design, CF2R installation, CF3R verification) and 4 calendar gates. Skipping T24 is the #1 reason kitchen + bathroom remodels stall at final inspection. This page maps the complete T24 process for LA construction in 2026.

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Quick Answer · Total Duration: Spans entire project lifecycle (design through final inspection)

Title 24 compliance has 3 phases: CF1R (design-time, prepared by T24 consultant, submitted with permit), CF2R (installation, signed by contractor + homeowner), CF3R (verification, completed at final). All 3 forms required for final inspection. NPLD's T24 consultant prepares CF1R for every project at no separate cost. Typical fee elsewhere: $300-$1,500.

Detailed Timeline — Week-by-Week / Phase-by-Phase

Below is the calendar-locked timeline NPLD uses on real LA construction projects. Each row covers the period, the phase, activities, NPLD's checkpoint to verify completion, and one common mistake we see other LA contractors make.

Period	Phase	Activities	NPLD Checkpoint	What Most LA Contractors Get Wrong
Step 1 (Design Phase)	T24 Compliance Path Selection	Choose performance compliance (whole-building energy model) or prescriptive compliance (each component meets minimum specs). Most LA residential uses prescriptive.	Compliance path documented.	Trying performance path on a small remodel — overkill and expensive.
Step 2 (Design Phase)	CF1R Form Preparation	T24 consultant prepares CF1R (Certificate of Compliance, residential or non-residential): lighting, HVAC, water heating, envelope, renewable. Each component vs. T24 minimum.	CF1R signed by T24 consultant + project owner.	Using outdated T24 cycle — 2022 code mandatory for permits applied after 1/1/23.
Step 3 (Permit Submittal)	Submit CF1R With Plans	CF1R included in LADBS plan-check submittal. Plan-checker reviews for compliance + cross-references with electrical, mechanical, plumbing plans.	T24 review part of plan-check approval.	Submitting plans + CF1R that contradict — plan-checker calls out the gap.
Step 4 (Construction Phase)	Install Per CF1R Specs	Contractor installs lighting, HVAC, water heating, insulation per CF1R specifications. Materials kept on site for inspection (insulation R-values, window NFRC stickers, HVAC equipment nameplates).	All materials match CF1R specs.	Substituting lower-spec materials — auto-fail at final.
Step 5 (Mid-Construction)	CF2R Form Signing	Contractor signs CF2R (Installation Certificate) attesting installation matches CF1R. Owner co-signs. Form posted on site for inspector.	CF2R signed + posted.	Signing CF2R without verifying install matches — fraud, contractor liability.
Step 6 (Pre-Final)	Performance Testing (If Required)	HVAC duct leakage test, refrigerant charge verification, fan watt draw — applicable for new HVAC installs or major HVAC mods. HERS rater performs.	HERS test PASS. CF3R prepared.	Skipping HERS — auto-fail at final.
Step 7 (Final Inspection)	CF3R Verification + LADBS Final	HERS rater signs CF3R (Certificate of Verification). LADBS final inspector reviews CF1R + CF2R + CF3R + on-site materials. T24 sign-off.	All 3 forms signed + on file. T24 compliance verified.	Closing project without CF3R — incomplete T24, blocks CofO.

Key Milestones + Netanel's Notes

Prescriptive vs. Performance Compliance — Which Path?

T24 offers two compliance paths. Prescriptive: each component meets T24 minimum (e.g., walls R-21 insulation, windows U-0.30/SHGC-0.23, lighting all LED, HVAC SEER 14+). Easy to document, common for remodels + additions. Performance: whole-building energy model (EnergyPro or CBECC-Res) demonstrates total energy use ≤ T24 baseline. More design flexibility (can use less insulation if you compensate elsewhere) but requires modeling software + $1-3K consulting. NPLD recommends prescriptive for 90% of LA residential — simpler, cheaper, fewer surprises at inspection.

"Performance path is for architects who want flexibility. Prescriptive is for projects that need to ship on time. I almost always pick prescriptive." — Netanel Presman, Owner + GC, NP Line Design

HERS Testing — When You Need It

HERS (Home Energy Rating System) tests are required for: (1) new construction; (2) any HVAC system installation or major mod; (3) duct system replacement; (4) refrigerant charge verification on new heat pumps. HERS rater is a separate trade ($350-$800 per test). Tests include duct leakage (max 5% or 15% of system airflow depending on cycle), refrigerant charge, airflow watt draw. Failure = re-test after corrections, $200-$400 per re-test. NPLD coordinates HERS as part of mechanical scope.

"Most kitchen + bathroom remodels don't need HERS. New HVAC or new duct work does. We coordinate it when triggered." — Netanel Presman, Owner + GC, NP Line Design

What Most LA Contractors Get Wrong

These are the patterns we see again and again when LA homeowners come to us after a failed project with another contractor. Each one is preventable — and NPLD prevents them.

⚠️ The 'We Don't Need T24 for This Project' Lie

Some contractors will tell homeowners that small projects (one circuit, one window, one ceiling fan) don't need T24. They do. Any new electrical circuit triggers T24 lighting compliance. Any new window triggers T24 envelope. Final inspection checks. Missing T24 = no final.

NPLD's Solution:

NPLD prepares CF1R for every permit-pulled project, regardless of size. The cost (~$200-$400 of consultant time) is bundled into the fixed-price contract. Final inspection passes.

⚠️ The 'Cheaper Equipment' Substitution

Contractor specs a 16 SEER heat pump in CF1R, then installs a 14 SEER unit to save $1-3K. Inspector reads the nameplate, fails the inspection. Now the contractor either swaps the equipment ($4-8K) or revises CF1R + resubmits (4-8 week delay).

NPLD's Solution:

NPLD installs the exact equipment specified in CF1R. Substitutions require formal CF1R revision before install. Inspectors confirm nameplates match paperwork.

How NPLD Delivers This — 7 Steps

Step 1 — Select compliance pathPrescriptive (most LA residential) or performance (whole-building model).
Step 2 — Prepare CF1R formT24 consultant documents lighting, HVAC, water heating, envelope, renewable.
Step 3 — Submit CF1R with permit applicationPlans + CF1R submitted to LADBS as one package.
Step 4 — Install per CF1R specsContractor installs lighting, HVAC, water heating, insulation to spec.
Step 5 — Sign CF2R formContractor + owner sign installation certificate.
Step 6 — HERS testing if requiredIndependent HERS rater performs duct leakage + refrigerant tests.
Step 7 — CF3R verification + LADBS finalHERS rater signs CF3R. LADBS final inspector verifies all 3 forms + materials.

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Frequently Asked Questions

What is Title 24 Part 6?

California's Building Energy Efficiency Standards — governs lighting, HVAC, water heating, envelope insulation, and renewable energy for new construction + alterations. Updated every 3 years (2019, 2022, 2025 cycles). Compliance is verified by LADBS at permit + final inspection.

Do I need Title 24 for a bathroom remodel?

If you're adding any new electrical circuits (e.g., new lighting on a separate switch), yes. Like-for-like fixture swaps with no new circuits typically don't trigger T24. NPLD evaluates each project on Day 1.

What are CF1R, CF2R, and CF3R forms?

CF1R = Certificate of Compliance (prepared at design, submitted with permit). CF2R = Installation Certificate (signed by contractor + owner during/after install). CF3R = Certificate of Verification (signed by HERS rater for performance-tested items, at final inspection).

How much does Title 24 consulting cost?

Standalone T24 consultant: $300-$1,500 per project depending on scope. NPLD includes T24 consulting in every fixed-price contract at no separate cost.

What's a HERS rater?

Home Energy Rating System rater — an independent third party certified to perform T24 performance tests (duct leakage, refrigerant charge, airflow watt draw). HERS testing required for new HVAC installs or major HVAC mods. Cost: $350-$800 per test.

Can I substitute different equipment than what's on CF1R?

Only with a formal CF1R revision before installation. Substituting at install time (e.g., a 14 SEER unit when CF1R specs 16 SEER) fails final inspection. NPLD installs exactly what's specified.

What happens if I fail Title 24 inspection?

Contractor must correct the deficiency (replace equipment, add insulation, change lighting) and re-inspect. Re-inspection 5-7 days out. Project cannot close until T24 passes.

LADBS Permit Timeline LADBS Plan-Check Process Design Development Process Construction Document Process Free Compliance Consultation

Netanel Presman

Founder · CSLB #1105249 · 200+ Projects

“Title 24 2025 is the strictest version of California's energy code yet. Single-family additions over 700 sq ft trigger HERS Rater testing. Solar is mandatory on new builds and most major renovations. Heat pumps are preferred over gas furnaces (the rebate stack now favors heat pumps to the tune of $5K-$8K per unit). Most LA contractors have not retrained on the 2025 changes — we've had subs hand us 2022-spec plans on jobs that submitted in 2026.”

Pro Tip

Title 24 2025 compliance trips up 60% of LA renovation submittals because the code changed in late 2024 and most contractors haven't retrained. Critical new requirements: heat pump preferred over gas (rebate-stack now favors heat pump by $5K-$8K), all-electric mandate on new builds, mandatory CF1R signed by certified HERS Rater. The HERS Rater must be hired BEFORE permit submittal — finding out at correction-round means 3-5 weeks of delay. We hire HERS Raters at design close. Cost: $400-$1,500 per project. Worth it 100% of the time vs the alternative (delayed inspections + failed final).

Author & Contractor of Record

Netanel Presman

Founder & Licensed General Contractor · Since 2016

CSLB #1105249Licensed B-General BBB A+ AccreditedZero complaints

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Page last updated: May 11, 2026Published by NP Line Design Inc

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