A fixed-price addition project from our Plano-based DFW team serving Prosper homeowners, with designers, project leads, and tradespeople who finish on the day they said they would. Eleven years, one promise: your quote is your price.
A home addition in Prosper typically runs $120,000 to $400,000, with larger second-story builds and estate-lot expansions in communities like Whispering Farms or Whitley Place landing at the upper end. Permits and inspections run through the Town of Prosper Building Inspections Division (Prosper is a town, not a city), part of its Development Services Department, submitted via the Citizen Self-Service portal. The biggest Prosper-specific cost driver for additions is that most homes sit in master-planned HOA communities with architectural-review committees, so an addition’s exterior brick, stone, and rooflines must be matched and approved before work starts, which adds design and material-matching cost. On the larger one-acre-plus lots, building outward is often cheaper per square foot than a second story, while tighter production-home lots in Windsong Ranch or Star Trail may push you upward instead. UHS quotes a fixed price up front so your number doesn’t move mid-project. For a line-item look at where the money goes, see our DFW remodel cost guide.
We handle survey, setbacks, engineering, HOA and permits before demolition. If your lot cannot take the footprint, you will hear it at the first walkthrough.
Fixed scope and a written schedule before anyone breaks ground in your yard.
Prosper is one of the youngest housing markets in DFW: roughly 91% of homes here were built since 2000, and the median build year lands in the early 2010s. That changes what a home addition means in this town. Most Prosper additions aren’t about repairing an aging house, they’re about outgrowing a builder-grade floor plan in a master-planned community like Windsong Ranch or Star Trail, or expanding a semi-custom home on one of the larger acre-plus estate lots in Whispering Farms, Whitley Place, or Gentle Creek Estates. UHS Remodeling builds room additions, primary-suite expansions, second-story builds, and casita and pool-house additions tied into those newer slab and framing systems. Since 2014 we’ve remodeled homes across DFW with a fixed-price model and a 1-year workmanship warranty, so your Prosper addition matches the home you already love.
We build home additions across Prosper, including Willow Bend, Legacy West, Deerfield, Hunters Glen, Russell Creek, and West Prosper Estates.
Site walk, scope (bedroom, master wing, second story), zoning + setback review, budget alignment.
Architectural drawings, structural engineer review, exterior match planning, MEP routing.
City of Prosper plan review, HOA architectural committee, energy code compliance. Average 3-5 weeks.
Foundation, framing, roof tie-in, MEP rough-in, insulation, drywall, finish-out. 12-22 weeks per scope.
Final inspection, punch list, certificate of occupancy filing, 1-year warranty active.
New slab and framing tied into the existing structure.
Matched brick and tinted mortar at the old-to-new seam.
Design and structural engineering run first, and city plan review plus the HOA architectural committee average three to five weeks before anyone breaks ground.
“An addition in Prosper is half permits, half craft. We pre-meet with the city’s plan review before drawings are stamped — that’s why our additions break ground 6 weeks after contract, not 14.”
From our Plano home addition case study — engineering, permits and the brick match. View all →
Which one is right depends on your lot line, your slab and your roof — not on a catalog.
Renderings from our design studies — the finished Prosper projects are above.
Ranges include foundation, framing, roof, systems and finishes — everything but landscaping.
All ranges include architectural drawings, engineering, materials, labor, permits, foundation, framing, MEP, finishes, and 1-year warranty. Sourced against NARI Cost vs. Value 2025 and your city building code requirements.
Single-room addition (250-450 sqft): bedroom, office, sunroom. Exterior match, standard finishes, full MEP.
Master wing or large family room (450-800 sqft): primary suite + bath, formal dining add-on, or great room expansion.
Second story or full custom (800+ sqft): structural foundation work, full second floor, matched exterior, custom millwork.
Additions live or die on setbacks, easements and lot coverage — and every DFW city writes those rules differently. We have permitted additions across Prosper and the neighboring cities, which means we can tell you in one visit whether the footprint you want is legal on your lot.
We deliver home addition across the northern DFW suburbs. See our home addition in Frisco, Allen, and McKinney.
Daniel B. on a DFW job site.
Your construction lead, Daniel B., runs your addition from framing to final inspection.
Sourced from NARI Cost vs. Value 2025, Texas Real Estate Commission, International Code Council, and 11 years of fielding the same calls in Prosper. Looking for ballpark numbers? Try our cost calculator.
Most Prosper home additions run $120,000 to $400,000. Single-room and primary-suite expansions sit toward the lower and middle of that range, while full second-story builds and large additions on acre-plus estate lots in Whispering Farms or Whitley Place reach the top. UHS Remodeling gives a fixed price up front, backed by a 1-year workmanship warranty, so the number you approve is the number you pay.
Yes. Most Prosper homes are in master-planned communities like Windsong Ranch or Star Trail with architectural-review committees, so your addition’s exterior brick, stone, and rooflines must be matched to the original home and approved by the HOA before the Town of Prosper will issue permits. UHS handles the design and documentation to clear both review steps.
It depends on your lot. On the larger one-acre-plus estate lots in Whispering Farms, Whitley Place, or Gentle Creek Estates, building out at ground level is often more cost-effective and avoids reinforcing the existing foundation. On tighter production-home lots in communities like Windsong Ranch or Star Trail, a second-story addition may be the only way to gain the space, which costs more per square foot. We assess your lot and quote both options where feasible.
A home addition in Prosper typically ranges from $120,000 to $400,000, depending on size, foundation, and whether it is single- or multi-story.
Single-room additions take 10-18 weeks including permitting. Multi-room wing additions run 6-11 months including design and permitting. Second-story additions and estate-scale projects take 10-16 months.
Yes, second-story additions are permitted in most Prosper residential zones, subject to maximum building height, setback, and lot coverage requirements. Not every original foundation is adequate for a second-story load – we run a structural feasibility check early in design.
Yes. Garage conversions are one of the most cost-effective Prosper additions because the foundation, walls, and roof already exist. We convert garages into home offices, playrooms, gyms, and in-law suites. The conversion requires a permit, new flooring, and HVAC/electrical tie-in.
We source matching or visually identical exterior materials – brick from the same manufacturer or salvaged brick yards, stone matched to the existing, siding and roofing matched. Matching materials may add 3-6 weeks to procurement but ensures the addition does not look bolted-on.
Yes. The Town of Prosper Building Inspection Department requires permits for any addition. Some Prosper neighborhoods also have HOA architectural review requirements. UHS handles both submissions.
Usually, yes – especially for rear additions and garage conversions that do not break into the existing home until the final tie-in phase. For second-story additions, most homeowners relocate for 4-10 weeks during structural phases.
Yes. Every addition we build is engineered by a licensed Texas structural engineer. We handle the full foundation scope and all structural framing including steel beams, load transfers, and second-story floor systems.
Yes. A well-designed Prosper addition typically returns 70-90% of project cost on resale. Master suite expansions and kitchen/great room extensions return close to 100%. An addition also lets a family stay in the neighborhood rather than selling and moving.
Call UHS Remodeling at (469) 850-7087 or fill out the contact form. Free in-home consultation, feasibility assessment, preliminary ROM within 7-10 business days.
North Texas sits on highly expansive clay soil that swells during wet months and shrinks during summer droughts, which can shift foundations by several inches over seasonal cycles. That is why every room addition we build in Prosper and Frisco starts with a foundation plan designed by a licensed structural engineer for the specific soil conditions of the lot. Typical solutions include steel-reinforced slab foundations and concrete piers that reach below the active soil zone, so the new addition moves with the original home instead of pulling away from it. Skipping this step is the most common cause of cracked brick, sticking doors, and separated rooflines in DFW additions.
Tell us what you need more of and we’ll walk the lot, check the setbacks, and give you an honest budget range before you commit to anything.
