A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Home Addition Contractor Across Pasadena
A home addition in Pasadena, TX typically runs $180 – $320 per square foot depending on foundation work, permit requirements, and finish level, with a standard 400-sq-ft bedroom addition landing between $72,000 and $128,000 before fixtures. That price reflects something most generic contractor pages miss: Pasadena sits inside Harris County’s unincorporated floodplain zones along Buffalo Bayou and Vince Bayou, which means your project may need a separate floodplain development permit and an elevation certificate before framing starts. Our Home Addition Contractor team works with Pasadena homeowners every week on additions that clear those county gates the first time, not the third. Call (361) 326-2313 and we’ll give you a written price before any work begins.
We’re Lodgewick ADU Houston, part of the Kingswell family of home-service companies. Russ Delmar leads our Houston operation, and every Pasadena project runs under The Kingswell Guarantee: a written price first, a real arrival window, a clean job site, and a written guarantee on every build.
Why Lodgewick ADU Houston Is Pasadena’s Preferred Home Addition Contractor Company
Pasadena homeowners call us because we know the difference between a project in Allendale and one off Red Bluff Road. A 1950s pier-and-beam house near Vince Bayou behaves nothing like a 1990s slab-on-grade tract home near Fairmont Parkway. The foundation, the floodplain review, the roof tie-in, the siding match: each one changes depending on which block you live on. We plan for that from the first walkthrough.
Our Pasadena customers tell us the same three things. The written price did not move. The crew showed up inside the window we gave. And when they called with a question during the build, a live person answered, not a voicemail. That last part matters when you’re seven weeks into a room addition and need to know whether the inspector signed off on the rough framing. We answer the phone 24/7.
We also know this city’s older housing stock. Pasadena has thousands of pier-and-beam homes built between 1940 and 1970, and many of them have settled floors, unpermitted older additions, and framing that was fine for the original footprint but undersized for new square footage. We plan for what we’ll actually find when the drywall comes off.
Bedroom Addition Contractor in Pasadena
A bedroom addition contractor in Pasadena handles what is usually the highest-value square footage you can add to your home, and also the one with the most permit friction. A permitted bedroom addition on a Pasadena lot often requires a Harris County floodplain development permit, an elevation certificate if the finished floor falls below the base flood elevation plus one foot, and the standard county building permits. The construction itself runs $180 – $290 per square foot for a code-compliant bedroom with a closet, egress window, and proper HVAC tie-in.
If your current home has three bedrooms and you add a fourth, you’re not just adding a room. You’re adding resale value tied directly to how Pasadena appraisers count bedrooms: legal egress, minimum 70 square feet, and a closet. We build to that standard every time, because a bedroom that cannot legally be called a bedroom is a very expensive storage room.
Foundation and Floodplain Work Before Framing
Many Pasadena bedroom additions start not with lumber but with a foundation discussion. On pier-and-beam homes, which dominate neighborhoods like Allendale and much of the east side, the new room typically needs new piers or a grade beam. If your lot is in the floodplain, Harris County may also require flood vents and a finished floor elevation a foot above base flood elevation. We bring the elevation certificate into scope before we quote, so that cost is in your first written price, not a surprise later.
HVAC, Electrical, and Finishes
A bedroom addition also needs heating and cooling. The cheapest route is sometimes a ductless mini-split, which saves running new ductwork through an older home. We walk you through the tradeoff in plain terms. Every Pasadena bedroom addition we complete includes the electrical panel check as part of the initial scope, because older east-side homes frequently need a subpanel upgrade to handle the new circuit load safely.
Sunroom Addition in Pasadena
A sunroom addition in Pasadena runs $150 – $260 per square foot for a permitted three-season room, with four-season rooms that tie into your home’s HVAC landing at $220 – $320 per square foot. The appealing part for a lot of Pasadena homeowners is that a sunroom gives you usable square footage without the full bedroom code package: no closet, less stringent egress, and often a simpler foundation. The tradeoff is resale classification. A sunroom is not living space on an appraisal unless it is heated and cooled like the rest of the house.
Pasadena’s heat means a sunroom needs real thought about glazing. A west-facing sunroom off a back patio can turn into an oven by 3 p.m. in July. We size the windows, roof overhang, and any ceiling fan or mini-split with the orientation of your lot in mind, not with a generic spec sheet.
Screened Porch Conversion vs. New Build
Some of the best sunroom projects we do in Pasadena start as a screened porch that never quite worked. Converting a roofed porch into a finished sunroom avoids new foundation work entirely if the existing slab or deck structure can support it. That can drop the price to $90 – $150 per square foot, and the Harris County review is simpler because the footprint hasn’t grown. We inspect the existing structure before estimating, because a deck built in the 1980s is not automatically a code-compliant floor.
Glass, Roofing, and Tie-In Details
A sunroom that attaches to your existing roofline needs a proper cricket or saddle where the new roof meets the old, especially on Pasadena homes with low-slope roofs, which are common in ranch-style builds. Done wrong, that junction leaks and damages the original roof deck. We flash and waterproof it to the same standard as the original roof. We also favor James Hardie siding on the exterior knee walls, because Pasadena humidity is hard on wood trim, and HardiePlank holds paint and shape through that moisture cycle.
Trusted Brands We Service in Pasadena
We design and build with materials we know will hold up south of the Ship Channel, not whatever is cheapest at the lumber yard this week. For fast, predictable envelope assemblies on Pasadena sunrooms and bump-outs, we often frame exterior walls for James Hardie siding. On projects where the homeowner wants a faster path from permit to move-in, we work with Plant Prefab and Boxabl designs and handle the local foundation, utility tie-ins, and Harris County paperwork ourselves. If we stock material for your Pasadena project, it stays on the shelf until your permit clears, and then it moves.
Common Home Addition Contractor Problems We See in Pasadena Homes
- Pier-and-beam floor settling. Older Pasadena homes, especially the 1950s stock in Allendale and along Red Bluff, are built on wood piers that settle unevenly. A new addition tied to a settled floor will telegraph that slope straight through the doorway unless we sister joists, add a perimeter beam, or install new piers first.
- Floodplain permit surprises. Contractors who quote without checking the Harris County flood map are quoting a fiction. If your finished floor needs to rise a foot, that changes foundation cost, step count at the doorway, and egress. We pull the floodplain check before we put a number in front of you.
- Asbestos in older vinyl tile and joint compound. Pasadena ranch homes built or remodeled before about 1980 often hide asbestos in floor tile and drywall mud. Break into that wall without testing and the inspector stops the job. We test before demo on any pre-1980 interior.
- Roof tie-in failures on low-slope roofs. Pasadena’s ranch-style homes frequently have low-slope or near-flat roof sections. Tying a pitched addition roof into a low-slope existing roof without the right transition flashing leads to leaks in the first heavy Gulf storm. We design that junction properly, with a saddle or cricket where needed.
Pricing for Home Addition Contractor in Pasadena, TX
For planning purposes, Pasadena homeowners should expect these real local ranges in 2026: a bedroom or room addition at $180 – $320 per square foot, a sunroom addition at $150 – $320 per square foot depending on whether it’s three-season or four-season, a bathroom addition at $220 – $400 per square foot, a bump-out addition at $200 – $350 per square foot, and a second-story addition at $250 – $400 per square foot. Foundation work, floodplain elevation requirements, and electrical panel upgrades are the three cost drivers that move a job most in Pasadena. A 400-sq-ft ground-floor bedroom addition with new piers and flood vents will land on the higher side of that range. A slab-on-grade sunroom conversion from an existing porch will land on the lower side. The written price you get from us before work starts is the price you pay, and it includes the Harris County permit path we’ve already walked for your house. Call (361) 326-2313 for a free estimate and a real number in writing.
We Also Serve Cities Near Pasadena
Our crews work throughout Home Addition Contractor in Pasadena and the surrounding area, including Galena Park, Deer Park, Channelview, and into Houston proper. Wherever your addition is going, the same written-price guarantee applies.
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 Home Addition Contractor in Pasadena
If your property sits in a mapped floodplain zone along Buffalo Bayou, Vince Bayou, or one of the county’s drainage channels, then yes, a bedroom addition triggers a Harris County floodplain development permit even if your lot has never flooded in your lifetime. The county reviews the finished floor elevation against the current flood insurance rate map, not the history of water in your particular yard. Call (361) 326-2313 and we’ll check the map for your address before we quote the job.
Two things: the condition of what we find inside the existing walls or under the floor, and any county-required change to the foundation elevation. Asbestos, rotted sills, undersized framing, and failed piers are the common ones on Pasadena’s older homes. That’s why we test before demo and walk the crawlspace before pricing. Everything we find gets added to written change orders with a price attached, never a vague “we ran into some things.”
No, not unless it meets bedroom code, and most sunrooms don’t. A legal bedroom in Pasadena needs a closet, a window or door meeting egress dimensions, and at least 70 square feet of floor area. It also needs to be heated and cooled like the rest of the house. If resale classification matters to you, tell us on the first call and we’ll scope the sunroom with bedroom-ready framing, wiring, and foundation so it can be converted later without redoing the envelope.
Plan on 10 to 14 weeks total: 3 to 5 weeks for Harris County permits and the floodplain review, then 7 to 9 weeks of construction, depending on foundation work and weather. The Harris County floodplain development permit is the variable that surprises people moving from a Houston-only experience. We’ll give you a week-by-week schedule in writing before we start, and we’ll update you if any county review runs long.
The elevation certificate and the foundation work that follows it. If your existing floor is below the base flood elevation plus one foot, you’re adding new piers or extending the beam, raising the finished floor, installing flood vents, and building steps at every new doorway. On a pier-and-beam home that can add $4,000 to $9,000 before a stud goes up. We get the elevation certificate during the estimating phase, so that number is in your first written price.
Ready for a real number? Call (361) 326-2313 to schedule a free walkthrough of your Pasadena property. We’ll check the floodplain map, walk the foundation, and give you a written price and schedule before you commit to anything.
Written by Russ Delmar, Owner at Lodgewick ADU Houston, serving Pasadena and the surrounding Harris County communities.
