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 Manvel
A home addition in Manvel, TX typically runs $180 – $420 per square foot depending on scope, with a bathroom addition landing between $55,000 – $105,000 and a garage addition between $65,000 – $140,000. The permit path isn’t the same for every lot, since Manvel straddles Brazoria and Fort Bend counties, and that single fact shapes your timeline and your inspection calendar before the first footing gets poured. If you’re weighing a room addition, a second story, or a garage conversion, call (361) 326-2313 and we’ll give you a written price before any work starts, not a ballpark that drifts once the crew shows up. Our Home Addition Contractor team coordinates scheduling from the Houston office and serves Manvel homes directly.
Why Lodgewick ADU Houston Is Manvel’s Preferred Home Addition Contractor Company
We’ve learned that Manvel homeowners don’t want a pitch. They want a number in writing, a crew that shows up in the window we gave them, and someone who picks up the phone when a question comes up mid-build. That’s The Kingswell Way, and it’s how every Lodgewick ADU Houston project runs. Russ Delmar, who leads our team, insists on that standard: written price first, defined arrival window, clean job site, and a written guarantee handed over before we drive the first nail.
Manvel clients call us after they’ve been burned. A price that changed at the door. A contractor who ghosted after the concrete was poured. A repair that failed eight months later and nobody returned the call. The Kingswell Guarantee addresses each of those directly. If the work isn’t right within 365 days, we come back and make it right, in writing, with a free return visit. That’s not marketing language. It’s the document you hold.
Every technician on a Manvel job site is background-checked and uniformed. You’ll know exactly who is walking your property, which matters when a build spans weeks and your kids are playing in the yard. And when you call (361) 326-2313, a live person answers, 24/7. Not a voicemail loop. Not a chatbot. A person who can look up your project.
Garage Addition Contractors in Manvel
Garage Addition Contractors in Manvel handle everything from an attached two-car bay to a detached ADU-style structure with conditioned living space above it, and the scope depends heavily on which side of the county line your lot sits on. A detached garage over 400 square feet in Manvel triggers a development review for setbacks and impervious cover, so the planning stage matters as much as the framing.
Attached Garage Bays and Bump-Outs
An attached garage addition off the main house usually means extending the existing foundation line, matching the roof pitch, and tying into the current wall framing. On Manvel’s clay soils, we over-excavate and compact before the pour, because a slab that heaves in the first two wet seasons cracks drywall at the addition seam and you’ll see it within a year. Budget $65,000 – $110,000 for a standard two-car attached bay.
Detached Garage Shells and Workshop Conversions
Detached structures need their own foundation, their own electrical service, and on lots in Brazoria County, wind-load tie-downs that meet coastal county requirements. We scoped a garage addition on a half-acre lot off Del Bello Road where the owner wanted a Tuff Shed-style shell converted into a conditioned workspace. Our crew handled the foundation tie-downs, slab insulation, and electrical rough-in to meet Brazoria County wind-load requirements, then trimmed the interior with James Hardie panels to match the main house. That project landed at $92,000 all-in.
Bathroom Addition Contractor in Manvel
A Bathroom Addition Contractor in Manvel takes on jobs where no bathroom currently exists: a primary-suite bath, a powder room near the living area, or a full bath attached to a garage conversion. Plumbing is the wildcard. In older Manvel homes, the existing drain lines may be 1.5-inch cast iron rather than 2-inch PVC, which means a partial re-pipe before the new fixtures go in.
Primary Suite Bath Additions
A primary suite bath addition means moving walls, running new supply and drain lines, waterproofing, and often adding a dedicated 20-amp circuit for a heated floor or a curbless shower pump. Expect $65,000 – $105,000 depending on finish level, and plan on 8 – 12 weeks from permit to finished drywall if your lot clears the county review cleanly. The biggest cost swinger is the drain run distance: a bath that backs up to an existing wet wall costs far less than one on the opposite side of the slab.
Powder Rooms and Half Baths
A powder room addition off the living area runs $35,000 – $55,000 in Manvel. It sounds small, but it still needs a permit, a vent stack through the roof, and a properly sloped drain line. We’ve done enough of these to know that squeezing a half bath into a 20-square-foot hallway nook usually costs more than adding it to an exterior wall with room to stub out.
Trusted Brands We Service in Manvel
We work hands-on with established ADU and prefab brands and materials, and we match the system to your lot, not the other way around. For Manvel lots with tight access or a preference for factory-built precision, we regularly install Dvele and Plant Prefab modules. For clients who want a site-built structure with panelized efficiency, Boxabl’s approach works well on flat Manvel parcels near Highway 6. We stock the common trim, flashing, and framing hardware these systems need locally, so a missing bracket doesn’t stall your build for a week waiting on a shipment.
Common Home Addition Contractor Problems We See in Manvel Homes
- One permit set for all of Manvel. A homeowner on the Brazoria side gets a stop-work order after starting with Fort Bend paperwork. The county line runs through residential parcels here, and two neighbors on the same street can answer to different desks.
- Under-scoped foundations on clay. Manvel’s expansive clay soils move. A slab poured without over-excavation and proper steel will heave within the first two wet seasons, and you’ll see the crack where the addition meets the original house.
- Skipping the development review. An accessory structure over 400 square feet triggers setback and impervious-cover corrections mid-build if the review didn’t happen first. It’s avoidable, but a lot of homeowners only find out when the inspector shows up.
- Mismatched roof lines. A bump-out that doesn’t tie into the existing roof structure properly will leak at the valley. We see this on additions where someone framed the new roof independent of the old one and hoped flashing would cover the difference. It won’t.
Pricing for Home Addition Contractor in Manvel, TX
Here are honest ranges for Manvel’s market. A room addition runs $180 – $320 per square foot. A second story addition runs $220 – $420 per square foot because you’re opening the existing roof and reinforcing first-floor framing. A sunroom addition lands between $45,000 – $90,000. A bathroom addition runs $55,000 – $105,000. A garage addition runs $65,000 – $140,000. A bump-out addition (extending a kitchen or living area 4 – 8 feet) runs $35,000 – $75,000. The price moves with foundation scope, drain run distances, roof tie-in complexity, and which county desk reviews your permit. Call (361) 326-2313 and we’ll put the exact number in writing before work begins. The estimate is free.
We Also Serve Cities Near Manvel
Our Home Addition Contractor in Manvel coverage extends to Alvin, Friendswood, Missouri City, and Stafford. If you’re on a property near the Brazoria – Fort Bend line, the same county-specific permitting knowledge applies, and we’ll handle the paperwork for whichever desk has jurisdiction over your parcel.
Serving Manvel, TX - Our Local Coverage Area
We’re based in the Manvel 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 Manvel
The county that issued your address and tax parcel ID is the one that inspects most of the work. The city of Manvel also has its own building official for city-limit properties, so your permit may run through city review first, then the applicable county for things like septic or stormwater. We pull the property record before we file anything, so you never start building under the wrong jurisdiction. Call (361) 326-2313 and we’ll check your specific parcel.
Yes. A prefab shell still requires a foundation permit, an electrical permit if you’re adding power, and in Brazoria County, wind-load certification for the tie-down system. The fact that the shell was factory-built doesn’t skip the local review. We handle the permitting for whatever system you choose, and we’ll tell you which reviews apply before you order anything.
Plan on 8 – 12 weeks. The permit review itself takes 2 – 4 weeks depending on which county desk handles your parcel, and the rough-in plumbing and waterproofing inspections add time in the middle. If we’re cutting into an existing slab to run drains, count on the longer end. We give you a written calendar at the start so you know when each inspection is scheduled.
Clay soil that requires deeper over-excavation or additional steel can add $3,000 – $8,000. An existing slab that’s cracked or out of level may need partial replacement before we tie in. A drain line that’s too far from the nearest vent stack can add re-pipe costs. We write the price before work starts and don’t change it at the door, but if a hidden condition appears when we dig, we tell you in writing and you approve before we proceed. Call (361) 326-2313 for a fixed written quote.
You can match the existing roof line, and in most Manvel additions an engineering stamp is required for the new roof structure, especially on the Brazoria County side where wind-load requirements apply. The engineer reviews the tie-in detail where the new rafters meet the old. We coordinate that stamp as part of the permit package, so you don’t have to hunt down a structural engineer on your own.
Written by Russ Delmar, Owner at Lodgewick ADU Houston, serving Manvel since 2010.
