Title 24 Energy Compliance in San Antonio, TX

Title 24 Energy Compliance in San Antonio, TX

Title 24 energy compliance is the set of California building efficiency standards that apply to any ADU or home addition, and yes, Texas homeowners ask us about it constantly. Even though your San Antonio project follows Texas code, many of the prefab ADU brands we build with, including Boxabl, Plant Prefab, and Tuff Shed, are engineered to Title 24 specifications at the factory, which means your accessory dwelling unit can meet stricter energy performance than local minimums and often qualify for better utility rates over the life of the structure. At Benson ADU San Antonio, we handle the compliance documentation, field verification, and paperwork trail so your ADU Design & Permitting package clears review without a second round of corrections. Call us at (430) 258-2928 and we’ll walk you through what applies to your specific lot.

Let’s be honest about what Title 24 actually is. It’s not a Texas law. It’s the California Energy Code, and it sets required standards for insulation levels, window performance, HVAC efficiency, lighting wattage, and air sealing. Many San Antonio homeowners building ADUs with prefab manufacturers encounter Title 24 because the factory panels arrive with documentation that references it. We translate that into the documentation the City of San Antonio and Bexar County reviewers expect from us, so your permit package doesn’t sit in someone’s queue for three extra weeks while you try to figure out which form goes where.

Troy Eastman, the owner at Benson ADU San Antonio, has built a process around making this as painless as possible. You’ll get a written compliance checklist before your first payment is due. You’ll see your pricing in writing before work starts. And if anything falls through the cracks, our 365-Day Done Right Promise applies to this scope of work just like every other service we do. We put that in writing too.

Key Takeaways

• Title 24 is the California Energy Code, and it matters to San Antonio ADU projects because most major prefab brands, including Boxabl and Plant Prefab, engineer their units to that standard.
• Compliance work is documentation-heavy: insulation values, window ratings, HVAC sizing, and air sealing verification all need to line up with what the factory shipped and what the local reviewer expects to see.
• Benson ADU San Antonio provides a written price before work starts, a written 365-Day Done Right Promise, and live phone support at (430) 258-2928 around the clock.
• We build with brands you can research yourself, including Tuff Shed, Boxabl, Plant Prefab, and James Hardie cladding, which gives you independent verification of the components going into your project.
• San Antonio’s hot, humid climate makes energy compliance genuinely useful, not just bureaucratic: a properly air-sealed ADU with a correctly sized mini-split costs less to cool every summer for decades.

When You Need Title 24 Energy Compliance

You don’t always need Title 24 documentation. But you’re far more likely to need it than you think, especially if you’re building an ADU with a prefab manufacturer. Here are the situations where we see it come up in San Antonio:

• Your prefab ADU ships with Title 24 documentation. Boxabl and Plant Prefab units are engineered in California and ship with efficiency paperwork that the San Antonio permit desk wants translated. We do that translation so your permit review doesn’t stall.
• You’re adding a second unit with its own HVAC system. Any conditioned space needs a load calculation, and when that load calculation references Title 24 assumptions, the energy compliance forms need to match. We handle that coordination.
• Your lender or appraiser asks for efficiency documentation. Some financing programs, especially energy-efficiency mortgages and green loan products, require specific compliance paperwork. If your lender asks for it, we can produce it.
• You’re planning to rent the ADU long-term. San Antonio has a growing ADU rental market, and tenants here know what a hot August afternoon does to a poorly sealed unit. A unit that meets stricter energy performance rents faster and leases for more, and the documentation proves it to prospective tenants.
• You want your utility bills to reflect the construction quality you paid for. CPS Energy rates in San Antonio keep climbing. A properly verified building envelope, which is exactly what Title 24 compliance work checks, means your monthly bills track the size of the space, not the gaps in the drywall.
• Your project includes a home addition, not just an ADU. Additions often trigger energy code review even when no one calls it Title 24. We can bundle the compliance work so the addition and the ADU clear together.

Our Title 24 Energy Compliance Process

Here’s exactly how we handle this, step by step. You’ll notice there’s no point where you’re left wondering where things stand, because every step comes with a written update and a live person on the phone if you want to talk it through.

1. We review your plans and your prefab documentation. We start with the drawings you have and the spec sheets from your manufacturer. If you’re working with a site-built ADU instead of prefab, we review the architect’s energy calculations. Either way, you get a written compliance checklist that shows exactly which documents exist, which ones we need to create, and which ones are already in good shape.
2. We identify every gap between the submitted paperwork and what the City of San Antonio expects. This is where experience matters. A missing window U-factor on a schedule is a five-minute fix if caught early and a three-week resubmission delay if caught at final review. We catch it early, and we show you what we found in writing.
3. We prepare the compliance forms and supporting calculations. We fill out the paperwork, run the load calculations if needed, and line up the brand-specific documentation from whatever manufacturer you selected. If you’re building with Boxabl or Plant Prefab, we know their factory documentation formats and we know what San Antonio reviewers ask for when they see those names.
4. We submit the compliance package with your permit application. Your compliance documentation goes in at the same time as your permit drawings, not as a bolt-on after the fact. That keeps your review on one track instead of two.
5. We respond to reviewer comments within one business day. When the city comes back with questions, which happens on most permits, we answer them fast. That speed is part of how we keep projects moving in San Antonio, where the permit queue can get long in spring and fall.
6. After construction, we verify the field conditions match the paperwork. Compliance doesn’t end at permit issuance. The insulation actually installed needs to match the insulation specified. We document that, and we keep the records on file for the full 365-day term of our Done Right Promise, and longer if you need them for resale.

Title 24 Energy Compliance Pricing in San Antonio

Here’s the honest pricing picture. Title 24 compliance work as a standalone service runs roughly $900 to $2,800 in San Antonio, depending on project size and whether we’re doing a site-built addition or a prefab ADU. For most ADU projects we handle, the compliance work is bundled into the full ADU Design & Permitting package, which means our clients typically see savings that make standalone pricing rare.

What moves the price:

• Project size: a 400-square-foot studio has fewer zones, fewer windows, and a smaller HVAC load than a two-bedroom unit. More conditioned square footage means more calculation and paperwork hours.
• Site-built vs. prefab: prefab units from Boxabl, Plant Prefab, and Tuff Shed arrive with factory documentation that we adapt. Site-built additions start from scratch on compliance forms, which takes more time.
• HVAC system type: a ductless mini-split is simpler to document than a ducted system. If your project includes ductwork, the compliance work includes duct leakage assumptions and testing requirements that add hours.
• Number of revisions from the city: we can’t control the review queue, but our first submission quality directly affects how many rounds of comments come back. Fewer rounds means lower total cost for you.

Here’s a straightforward look at what standalone compliance work costs, based on the projects we’ve done in San Antonio:

Service	Typical Range
Compliance documentation for prefab ADU (under 600 sq ft)	$900 – $1,400
Compliance documentation for prefab ADU (600 – 1,200 sq ft)	$1,200 – $1,900
Compliance documentation for site-built addition	$1,500 – $2,800
Bundled with full ADU Design & Permitting package	Reduced, often significantly, versus standalone

These are honest ranges based on what we’ve charged on actual San Antonio projects. We’ll give you a written price for your specific project before any work starts, and that price doesn’t change at the door. Call (430) 258-2928 and we’ll walk through your drawings, your manufacturer, and your site in one conversation, then email you the number.

Why San Antonio’s Climate Makes Energy Compliance Worth Taking Seriously

It’s tempting to treat Title 24 paperwork as a hurdle, something to get done and forget. But the energy performance underlying this work has a direct effect on what it costs to keep your ADU comfortable during a San Antonio summer. Our city averages over 100 days a year above 90 degrees, and July and August routinely flirt with triple-digit highs for weeks on end. An ADU with a sloppy air seal will cost its owner, or its tenant, hundreds of dollars more per year in cooling alone.

The compliance work verifies what the prefab factory or your builder already did. Boxabl units, for example, use structurally insulated panels that the company documents to California efficiency standards. That documentation is the same information a Title 24 review checks: window performance, panel insulation values, and air tightness. When that verification gets done correctly, it means whoever lives in the ADU won’t be running a window air conditioner at full blast from May through September just to keep the space below 80 degrees.

And this matters for resale too. San Antonio homebuyers in 2026 are asking for utility history before they sign. A documented, verified energy profile for your ADU gives you a concrete answer when a buyer asks what the electric bill will look like.

Frequently Asked Questions: Title 24 Energy Compliance

Do I need Title 24 compliance for an ADU in San Antonio?

No, not automatically. Title 24 is California’s energy code, and San Antonio follows Texas and City of San Antonio codes. However, you will need Title 24 documentation if your ADU is built by a prefab manufacturer that engineers its units to California standards, such as Boxabl or Plant Prefab, or if your lender requests efficiency paperwork as a condition of financing. We can tell you in one phone call whether it applies to your project. Call (430) 258-2928 and we’ll check your plans against what’s actually required.

How much does Title 24 energy compliance cost in San Antonio?

Standalone compliance work typically runs $900 to $2,800 in San Antonio, depending on project size and whether it’s a prefab ADU or a site-built addition. When bundled with our full ADU Design & Permitting package, the cost is typically reduced significantly. Every client receives a written price before any work starts, so you’ll know your exact number before you commit. Call (430) 258-2928 for a free estimate.

Can you handle Title 24 compliance for a prefab ADU from Boxabl or Plant Prefab?

Yes. We build with Boxabl, Plant Prefab, and Tuff Shed, and we’re familiar with the factory documentation each brand provides. We adapt that documentation to satisfy San Antonio permit reviewers, and we do it before submission so your permit doesn’t stall in the queue. Every technician who visits your site is background-checked and arrives in uniform, so you always know who’s on your property.

How long does Title 24 compliance work take?

For most projects, we prepare compliance documentation in 3 to 10 business days, depending on whether we’re working from prefab factory specs or starting from scratch on a site-built addition. The biggest variable is how many rounds of city comments come back, which is why we emphasize first-submission quality and answer reviewer comments within one business day. Our goal is to keep the process moving so your ADU doesn’t sit waiting on paperwork.

Is Title 24 compliance covered by your guarantee?

Yes. The 365-Day Done Right Promise applies to Title 24 compliance work just like every other service we provide. If the compliance documentation is wrong, if the field conditions don’t match the submitted paperwork, or if anything we prepared causes a delayed approval or a failed inspection within one year, we make it right at no charge, in writing. That’s not a verbal promise. It’s stamped on every project.

Why Benson ADU San Antonio for Title 24 Work

There are plenty of contractors in San Antonio who can frame a wall. Far fewer can produce a clean compliance package that clears the permit desk without two rounds of corrections. And fewer still will put their price in writing, hand you a written guarantee, and answer the phone when you call at 9 pm with a question about your permit status.

We do all three. Troy Eastman leads Benson ADU San Antonio with one operating rule: every promise goes in writing before it’s promised. You’ll get a written compliance checklist before your project starts. You’ll get a written price before any work begins. And you’ll get a written 365-Day Done Right Promise that covers the compliance work and the rest of your ADU scope. If something isn’t right, we come back and make it right, free, within the full year.

We’re part of the Relay Home Co. family, founded in 2006, and our building partners include James Hardie for cladding and Tuff Shed, Boxabl, and Plant Prefab for ADU structures. That means you can look up every component going into your project and verify its quality independently, rather than relying on a contractor’s word. We want you to verify. It keeps us honest, and it means you get a better building.

Every call to (430) 258-2928 is answered by a live person, 24 hours a day, 365 days a year. No voicemail loops, no waiting until Monday morning. If you have a question about your energy compliance paperwork on a Saturday afternoon, you’ll get a person on the line. That’s how we’ve always done it, and it’s how we’ll handle your project.

Get a Written Price for Your Title 24 Compliance Work

If you’re planning an ADU in San Antonio and you’re seeing Title 24 language on your prefab manufacturer’s paperwork, or if you simply want to know what energy compliance will cost on your specific project, call us. We’ll review your plans, tell you what applies, and send you a written price. No charge for the estimate, and no obligation to move forward. Our home page has more on the full range of services we offer, and our ADU Design & Permitting in San Antonio page walks through the entire permitting process step by step.

Call (430) 258-2928 now and get the number in writing before you make any decisions. We’ll answer the phone.

Written by Troy Eastman, Owner at Benson ADU San Antonio, serving San Antonio.