A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable ADU Builders Across Pasadena
Building an accessory dwelling unit, what most people call a backyard house or garage apartment, in Pasadena means dealing with tighter setbacks than almost anywhere else in the Houston metro. A detached ADU here typically runs $185,000 to $320,000 depending on size, finishes, and whether you need a separate electric and water meter, which Pasadena requires for rental units. That’s a real number, not a teaser. Our crews work in Pasadena every week, from Red Bluff Road down to Spencer Highway, and we know exactly where the city’s inspectors push back so your permit doesn’t stall for a month. Call (361) 326-2313 and we’ll walk your lot, check the setbacks, and give you a written price before any work starts.
Why Lodgewick ADU Houston Is Pasadena’s Preferred ADU Builders Company
We’re the ADU company of the Kingswell family, building under The Kingswell Guarantee since 2010. Russ Delmar leads our Pasadena work, and he’s the one who walks every lot before we quote it. Homeowners in Pasadena call us because we put the price in writing before we touch a shovel, and we name the exact arrival window for every phase. No door-knock price changes. No “we’ll figure it out later.”
Pasadena homeowners hear horror stories about Houston contractors who quote one number and then discover “unforeseen conditions” once the slab is poured. Our approach is different. We check the Pasadena impact fee schedule, the setback requirements, and the drainage review before we quote, because those are the three things that blow up budgets on ADUs in this city. When we hand you a number, it accounts for Pasadena’s actual rules, not a generic Houston template.
Our technicians are background-checked and wear uniforms. When a crew shows up at your home off Fairmont Parkway or near Strawberry Park, you know exactly who’s on your property. A live person answers our phone 24 hours a day, seven days a week. If you have a question about your build schedule or your guarantee at 9 p.m., a person picks up. Not a voicemail loop.
Backyard ADU in Pasadena
A backyard ADU in Pasadena is a standalone living unit built in the rear yard of your existing home, and it’s the most common project we build in this city. Pasadena requires a 5-foot rear and side setback for detached ADUs, which is two feet more than Houston’s 3-foot rear minimum. That means a lot of Pasadena lots that look wide enough for a 750-square-foot unit actually cap out around 600 to 650 square feet once you account for the setbacks and the city’s lot coverage limits. A typical backyard ADU in Pasadena runs $195,000 to $310,000, with the higher end reflecting separate utility connections, upgraded kitchens, and fiber cement or brick siding that matches the main house.
Site Evaluation and Setback Math
Before we quote anything, we measure your lot and map the actual buildable rectangle using Pasadena’s setback rules, not Houston’s. We flag easements, existing trees the city protects, and where the drainage flows after a heavy Gulf rain. This is the step most homeowners skip, and it’s the reason so many ADU bids from out-of-town builders fall apart during plan review.
Foundation, Utilities, and the Pasadena Impact Fee
Pasadena charges an impact fee on new water and sewer taps for detached ADUs, calculated per fixture unit. Adding a full bathroom, kitchen sink, and laundry hookup can push that fee into the $4,000 to $9,000 range. We include that line item in writing so you never get a surprise invoice after the permit is issued. If your ADU will be rented out, Pasadena also requires a separate electric meter, which adds roughly $1,500 to $2,500 for the disconnect, panel, and meter base.
ADU Construction in Pasadena
ADU construction in Pasadena means taking a permitted plan and turning it into a finished, inspected, livable unit, and it’s where our crews spend most of their year. The build itself, from foundation to final inspection, typically takes 5 to 7 months in Pasadena depending on the size and whether you’re doing a custom stick-built unit or a prefab installation. A custom site-built ADU in Pasadena usually lands between $185,000 and $280,000, while a prefab or modular unit with a local foundation crew runs $140,000 to $210,000 before utility hookups.
The Pasadena Build Sequence
We pull the permit, schedule your pre-construction drainage review with the city, and only then do we break ground. Pasadena’s stop-work orders are almost always tied to drainage review or setback violations, so we sequence the job to avoid both. Framing, rough-in, insulation, drywall, finishes. Every pass gets inspected, and we don’t cover up work until the city signs off.
Prefab Installations on Pasadena Lots
For homeowners who want a faster, tighter-tolerance build, we work with established prefab manufacturers like Dvele, Mighty Buildings, and Boxabl. The factory builds the modules, our crew handles the Pasadena-specific site work: foundation, utility trenches, meter bases, and the final trim-out. Prefab works best on level Pasadena lots with clear crane access, which most homes in Golden Acres and Village Grove have, but tight lots off Pansy Street can be trickier.
Trusted Brands We Service in Pasadena
We stock and install components from manufacturers our Pasadena customers ask for by name. Our crews are hands-on with Dvele panelized shells, which shave weeks off the framing schedule on tight lots. We’ve also installed Mighty Buildings modular units and Boxabl casitas, and we’ve used James Hardie fiber cement siding on nearly every custom backyard ADU we’ve built in Pasadena, because it holds up to the humidity and the salt air. When we quote a prefab or panelized build, we include the foundation, crane day, and utility rough-in in the written price. You’re not left coordinating three contractors to get one unit standing.
Common ADU Builders Problems We See in Pasadena Homes
- Skipping the pre-construction drainage review. Pasadena requires a drainage review before any foundation excavation begins on a detached ADU. We’ve seen homeowners lose 3 to 4 weeks to a stop-work order because a builder dug first and filed later. Our sequencing never puts a shovel in the ground before the city approves the drainage plan.
- Underestimating the impact fee. The Pasadena Impact Fee for new water and sewer taps is charged per fixture unit, and it catches first-time ADU owners off guard. Two full bathrooms plus a kitchen can push the fee past $7,000. We itemize this on every written quote so the permit-stage bill doesn’t surprise you.
- Assuming garage conversions can skip the fire-rated separation. If you convert an attached garage in Pasadena, the shared wall needs a 1-hour fire-rated assembly. Add a sprinkler system if the ADU is attached. That’s a city code requirement, not a suggestion, and it changes the budget by $8,000 to $15,000. We price it correctly the first time.
- Designing for Houston setbacks on a Pasadena lot. Houston allows a 3-foot rear setback. Pasadena requires 5 feet. A plan drawn to Houston rules will get rejected in Pasadena plan review, and the redesign can eat weeks. Our lot walks start with the actual Pasadena setback math.
Pricing for ADU Builders in Pasadena, TX
Here are the honest ranges for Pasadena, not Houston. A detached custom backyard ADU runs $185,000 to $310,000. A prefab or modular ADU with local site work lands between $140,000 and $210,000. An attached garage conversion typically costs $130,000 to $220,000 once you factor the fire-rated wall and, in many Pasadena cases, the sprinkler requirement. A studio ADU under 500 square feet can come in around $145,000 to $185,000. The biggest cost drivers are the Pasadena impact fee, whether you need a separate electric meter for a rental, and your siding choice. Call (361) 326-2313 to schedule a free lot walk and written estimate. The number we quote is the number you pay.
We Also Serve Cities Near Pasadena
Our ADU Builders in Pasadena crews also take projects in Deer Park, Galena Park, Channelview, and Houston. The setback rules, impact fee schedules, and plan review timelines differ in each of those cities, and we quote them accurately. If you’re just outside Pasadena city limits, we’re likely already working near you.
Serving Pasadena, TX - Our Local Coverage Area
We’re based in the Pasadena area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About ADU Builders in Pasadena
Yes, Pasadena requires a separate water meter for a detached backyard ADU that will be rented or leased, and the city charges an impact fee per fixture unit on the new tap. For an owner-occupied ADU with no separate rental, a sub-meter may be allowed, but Pasadena’s default for rental units is a dedicated meter. This line item typically adds $4,000 to $9,000 depending on fixture count. Call (361) 326-2313 and we’ll pull the exact fee schedule for your lot size and plans.
No if the ADU is attached, Pasadena requires a 1-hour fire-rated separation on the shared wall, and if the conversion is attached to the primary dwelling, a sprinkler system is required. The sprinkler requirement alone typically adds $8,000 to $15,000. If you’re weighing a garage conversion against a detached backyard unit, we’ll price both options in writing so you can compare real numbers. Call (361) 326-2313 for a free estimate.
Most ADU permits in Pasadena take 8 to 14 weeks from complete application to approved permit, assuming the drainage review is filed correctly and the plans meet the city’s 5-foot setback requirements. Plan review tends to stall when builders submit Houston-drawn designs that violate Pasadena setbacks. We handle the full permit package, including the drainage review, and our customers typically see approval in 10 to 12 weeks. Call (361) 326-2313 if you want us to check your lot before you pay for plans.
A detached ADU in Pasadena can be up to 1,200 square feet, or 50% of the primary home’s living area, whichever is less, but the practical maximum on most Pasadena lots is smaller once you apply the 5-foot rear and side setbacks. A lot off Red Bluff Road that looks big on paper often tops out around 600 to 750 square feet of buildable ADU footprint. We measure the actual buildable rectangle before we quote anything. Call (361) 326-2313 for a free lot walk.
Yes, building an ADU in Pasadena will affect your homestead exemption on the portion of the property that’s no longer used as your primary residence, and the added square footage will increase your appraised value. The homestead exemption applies to the main home, not a detached rental unit. The exact tax impact depends on your appraisal district’s valuation of the new improvement, and we recommend confirming with the Harris County Appraisal District before you sign a build contract.
Written by Russ Delmar, lead for Lodgewick ADU Houston in Pasadena, building under The Kingswell Guarantee.
We’re the ADU Builders team that puts the price in writing, shows up when we say, and comes back if it’s not right. If you’re planning a backyard ADU or garage conversion in Pasadena, call (361) 326-2313 to schedule your free lot walk and written estimate. The Kingswell Guarantee covers every project: written price first, real arrival window, clean job site, and a 365-Day Done Right Promise in writing.
