Permits & Title 24 / Energy Compliance CF1R ENERGY FORMS · PLAN CHECK COORDINATION · CITY-BY-CITY EXPERTISE

The paperwork that decides whether your conversion is legal.

Every habitable garage conversion in California needs to meet Title 24 energy standards — insulation values, window performance, HVAC efficiency — documented through a CF1R compliance form as part of your permit package. We prepare this, along with the rest of your permit application, and manage the back-and-forth with your city's plan checkers so you're not the one decoding correction letters.

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Why Permitting a Garage Conversion Isn't Like Permitting a Remodel

You're changing a structure's use, which triggers requirements a simple remodel doesn't.

Converting a garage into habitable space changes its legal use, which means it has to meet the same energy code, egress and ceiling-height standards as any other room you'd live in — even though the existing structure was originally built to a much lower standard as a garage. Title 24 compliance specifically covers wall, ceiling and floor insulation R-values, window U-factor and solar heat gain coefficient, and HVAC system efficiency, all calculated together into a compliance certificate specific to your city's climate zone. Each South Bay and Peninsula city applies these standards through its own plan check process, with its own quirks and typical correction points, which is exactly the local knowledge this service is built around.

Permit and Title 24 energy compliance documents laid out next to a garage conversion floor plan

What's Included

The full permit and energy compliance package, managed start to finish.

Title 24 Energy Calculations & CF1R Forms

Complete energy compliance calculations and documentation for insulation, windows and HVAC, prepared specific to your project and climate zone.

Complete Permit Application Package

Building, electrical, plumbing and mechanical permit applications assembled and submitted as a coordinated package rather than piecemeal filings.

Plan Check Correction Management

We respond to plan checker correction letters directly, so you're not the one interpreting code citations or resubmitting drawings.

JADU Owner-Occupancy & ADU Documentation

The specific affidavits and supplemental forms each permit type requires, prepared correctly the first time to avoid a rejected submission.

Inspection Scheduling & Coordination

We schedule and attend required inspections throughout construction, from rough framing through final, so nothing holds up your certificate of occupancy.

Service Areas

Also converting garages nearby.

Based in San Jose, working throughout Santa Clara, San Mateo and southern Alameda counties.

Atherton Belmont Campbell Cupertino Dublin East Palo Alto Foster City Fremont Gilroy Hayward Hollister Los Altos Los Altos Hills Los Gatos Menlo Park Milpitas Morgan Hill Mountain View Newark Palo Alto Pleasanton Redwood City San Carlos San Jose San Mateo Santa Clara Saratoga Sunnyvale Union City Woodside

FAQ

Questions homeowners ask us

Title 24 is California's building energy efficiency standard, covering insulation, windows, lighting and HVAC systems. It applies to your garage conversion because converting the space to habitable use requires it to meet the same energy performance standard as any other living space — a standard the original garage structure wasn't built to.

It varies significantly by city and current plan check volume — a JADU with shared utilities often moves faster than a detached ADU with independent utility connections. We'll give you a realistic estimate specific to your city once we've reviewed your scope.

That's expected — garages are built to a much lower standard than habitable space. Part of our scope is adding the insulation, window upgrades or HVAC changes needed to bring it into compliance, then documenting that on the CF1R form.

Sometimes, depending on what was built and whether it can be brought up to current code without major rework. This needs a specific evaluation of what's there — we can assess it and tell you honestly what a retroactive permit would involve.

Our core pages cover the cities we work in most often, but we regularly handle permits elsewhere across the South Bay and Peninsula too. Tell us your address and we'll confirm coverage and your specific city's requirements.

Free, No-Obligation Quote

Let's talk about your garage.

Tell us what you're converting it into — a JADU, an ADU, an office — and we'll get back to you with next steps, usually within one business day.

(408) 442-9136