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 Grand Prairie
Adding a room to your Grand Prairie home usually costs between $165 and $310 per square foot, and a full 400-square-foot room addition typically lands somewhere between $66,000 and $124,000 before you touch fixtures or finishes. That’s the honest range we quote to homeowners along Carrier Parkway, up near the Highlands, and down around Fish Creek. We’re Lodgewick ADU Dallas, part of the Kingswell family of home-service companies, and we’ve been running room additions, second-story additions, and ADU builds since 2010. Call (361) 204-4652 and we’ll put a written scope and price in front of you before a single permit gets pulled.
Our Home Addition Contractor team knows Grand Prairie’s permit desk, its inspectors, and its setback rules. That matters more than most people realize until the city rejects a plan that sailed through in a neighboring town.
Why Lodgewick ADU Dallas Is Grand Prairie’s Preferred Home Addition Contractor Company
Grand Prairie homeowners tend to be specific about what they want: a real price, a real schedule, and a crew that shows up clean and sober. Russ Delmar, who leads our Dallas-Fort Worth operation, built the team around that expectation. Every project runs under The Kingswell Guarantee. We write the price before work starts. We give you a defined arrival window. We leave the job site cleaner than we found it. And we hand you a written guarantee on every build, with a free return visit if the work fails within the 365-day period.
The Grand Prairie permit process has its own rhythm. We’ve walked plans through the city’s building department enough times to know which details trigger a rejection and which ones pass on the first submittal. That’s not something a contractor from outside the area always knows. Our familiarity with Grand Prairie’s inspection sequence – from erosion control to footing to rough framing to final walk – means fewer stop-work orders and fewer days lost. And when you call us at (361) 204-4652, a live person answers. Not a voicemail. Not a chatbot. Every hour of the day.
Room Addition Contractor in Grand Prairie
A room addition in Grand Prairie means pulling a building permit from the city, meeting the 5-foot side and rear yard setback, and getting through a specific inspection ladder before the city signs off. Our room addition contractor work typically runs $165 to $260 per square foot for a ground-level build-out, depending on whether we’re tying into the existing roof or cutting a new ridge. When a Grand Prairie homeowner wants an extra bedroom, a home office, or a den off the back of the house, that’s what we scope and price.
Ground-Level Room Additions
The job starts with a site plan that respects Grand Prairie’s setback minimums. Then we pull the permit, order the locate, and get erosion control in place before any dirt moves. Foundation, framing, roof tie-in, rough mechanicals, insulation, drywall, and finish work follow. A straightforward 300-square-foot addition on a flat lot near Grand Prairie High School will run around $50,000 to $78,000.
Home Office and Flex Room Builds
More Grand Prairie homeowners are asking for a dedicated office or flexible room without changing the house’s footprint. That’s a bump-out addition, usually 100 to 200 square feet, priced between $18,000 and $45,000. The city still wants the full permit and inspection path, even for a small bump-out. We handle that end to end.
Second Story Addition Contractor in Grand Prairie
Second-story additions are a different animal. In Grand Prairie, going up instead of out is often the only way to get more square footage when the lot is already tight against the 5-foot setback. Our second story addition contractor work starts around $210 per square foot and can reach $310 per square foot once you factor in stairwell rework, structural reinforcement, and the required wind-load stamping under the city’s current IRC adoption. A full 800-square-foot second story typically runs $168,000 to $248,000 in Grand Prairie.
Over-the-Garage or Over-the-Kitchen Additions
We frame second-story additions over existing single-story homes throughout Grand Prairie, including the neighborhoods around Main Street and up toward I-30. The structural plan always includes a stamped wind-load design. That’s non-negotiable here. We also size a new subpanel when the existing 200-amp service can’t carry the added load, which is the case more often than not in homes built before 1990.
Stairwell and Structural Tie-In Work
Most people don’t budget for the stairwell. It’s not a small line item: a code-compliant stairwell with landings and headroom typically adds $12,000 to $22,000 to the job. We price it on the front end, in writing, so there’s no surprise at rough-in. When we built a second-story addition near the Grand Prairie Main Street corridor, the inspector flagged the 5-foot side setback, and we shifted the stairwell 18 inches inward before rough framing. That’s the kind of adjustment that saves thousands later.
Trusted Brands We Service in Grand Prairie
For Grand Prairie additions that use prefab components or factory-built wall systems, we work with established manufacturers and material suppliers: Plant Prefab for panelized wall and roof assemblies, Tuff Shed for finished accessory structures that convert cleanly into livable space, and James Hardie for fiber-cement siding that holds up through North Texas heat and hail. We stock common trim, flashing, and touch-up materials locally so a Grand Prairie job doesn’t stall waiting on a freight shipment. When a panel shows up damaged from transit, which happens occasionally, we reorder same-day and keep the schedule moving.
Common Home Addition Contractor Problems We See in Grand Prairie Homes
Grand Prairie has its own set of recurring issues. Here’s what we deal with most often on local projects:
- Plans drawn to Dallas setback standards. Grand Prairie requires a minimum 5-foot side and rear yard setback for detached ADUs and additions, stricter than Dallas’s 3-foot allowance. A plan that clears in Dallas gets bounced back here, and the homeowner loses two to three weeks.
- Undersized HVAC on the existing system. A 3-ton unit serving the original house gets tapped to handle a new 300-square-foot addition, and the city’s Manual J load review fails it. We size the load correctly before submittal, which means sometimes adding a ductless mini-split or upsizing the unit.
- Foundation work started before the locate and erosion control inspection. The city issues a stop-work order, and then inspections get scheduled out further. We sequence the locate, the erosion control check, and the foundation inspection in the right order from the start.
- Change orders that balloon the price mid-build. The most common one on a second-story addition in Grand Prairie is unanticipated structural reinforcement when the existing framing doesn’t meet current wind-load code. We open the walls and price the fix before framing begins, so the change order lands early, not at drywall.
Pricing for Home Addition Contractor in Grand Prairie, TX
Here’s what we quote in Grand Prairie, in writing, before work starts:
- Bump-out addition (100 – 200 sq ft): $18,000 – $45,000
- Ground-level room addition (300 – 500 sq ft): $50,000 – $130,000
- Second-story addition (500 – 800 sq ft): $105,000 – $248,000
- Sunroom addition: $30,000 – $70,000
- Garage addition (new or extended): $25,000 – $80,000
What moves the number on a Grand Prairie job: the condition of the existing foundation, whether the roof tie-in requires re-framing, the electrical panel’s remaining capacity, and how far the addition sits from the 5-foot setback line. Every price we give includes the written guarantee and the 365-Day Done Right Promise. Call (361) 204-4652 for a free estimate and a written line-item scope.
We Also Serve Cities Near Grand Prairie
Our crews cover Grand Prairie and the surrounding metro: Duncanville, Dallas, Cedar Hill, and Addison. If you’re in one of those cities and planning a room addition or ADU, the same Kingswell Guarantee applies. Dispatch and scheduling are coordinated from our Dallas-Fort Worth office, and the crew you meet on site is the crew that builds your project.
Serving Grand Prairie, TX - Our Local Coverage Area
We’re based in the Grand Prairie 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 Grand Prairie
Grand Prairie requires a minimum 5-foot side and rear yard setback for a detached ADU or addition. Dallas allows 3 feet for detached structures in many zones. If you’re planning an ADU in Grand Prairie, the extra 2 feet can shift the entire footprint on a narrow lot. We verify setbacks on the site plan before submittal so the permit doesn’t get rejected on the first pass. Call (361) 204-4652 and we’ll walk your lot with you.
Grand Prairie’s inspection sequence for a room addition runs: erosion control and tree/utility locate, footing and foundation, rough framing with wind-load verification, rough electrical and plumbing, insulation, drywall, and final. Each step has to pass before the next one gets scheduled. Missing one or going out of order triggers a stop-work order. We schedule them in sequence and have someone on site for every inspection.
A 400-square-foot ground-level room addition in Grand Prairie typically runs 8 to 14 weeks from signed contract to final inspection, depending on permit turnaround and inspection scheduling. Foundation and framing eat the first three to four weeks. Mechanicals, drywall, and finish work take the rest. Weather delays in spring storm season can add a week or two. We give you a written schedule with the price.
The most common change order on a second-story addition in Grand Prairie is structural reinforcement when the existing first-floor framing doesn’t meet the city’s current wind-load code. Once we open the walls, we can see what’s actually there versus what the original plans assumed. If additional shear wall, strapping, or a beam upgrade is required, that’s a change order. We price that contingency before framing starts, so it doesn’t blindside you. Call (361) 204-4652 for a detailed quote.
Grand Prairie covers the electrical subpanel under the main addition permit, but the rough electrical inspection still has to pass before insulation goes in. The inspector will check the subpanel size, the feeder wire gauge, and the grounding. We size the subpanel to the new load during design, and we pull the addition permit to cover all electrical work. No separate electrical permit is required for a standard room addition.
Call (361) 204-4652 and ask for Russ. You’ll get a written scope, a real price, and a schedule you can hold in your hand. Free estimates, The Kingswell Guarantee on every project, and a live person on the phone whenever you call.
Written by Russ Delmar, Owner at Lodgewick ADU Dallas, serving Grand Prairie and the surrounding metro since 2010.
