A fixed-price addition project from our Plano-based DFW team serving McKinney homeowners, with designers, project leads, and tradespeople who finish on the day they said they would. Eleven years, 5,875 projects, one promise: your quote is your price.
Most home additions in McKinney run $120,000 to $400,000, with larger second-story or multi-room expansions reaching the upper end. A primary-suite or single-room bump-out typically sits lower in that range, while a full second story or attached in-law suite on a Stonebridge Ranch or Craig Ranch home pushes higher. UHS quotes a fixed price up front, so the number you approve is the number you pay. Permits and inspections run through the City of McKinney Building Inspections department, part of Development Services, with applications submitted via the city’s online self-service portal. The biggest local cost driver is which McKinney home you are expanding: additions to 1990s-2010s master-planned homes carry HOA architectural-review requirements, while expanding an 1890s-era Historic Downtown home adds cost for matching period rooflines, siding and porch details, and for upgrading the older structure to current code where the new and old framing meet. For a line-item look at where the money goes, see our DFW remodel cost guide.
Adding square footage in McKinney means working with two very different kinds of homes, and a home addition has to respect both. In the master-planned communities that fill most of the city, Stonebridge Ranch, Craig Ranch, Trinity Falls and Tucker Hill, the 1990s-and-newer houses are now hitting their first major expansion cycle: families want a primary-suite addition, a bigger kitchen footprint, or a second story rather than leaving for a larger home. In the Historic Downtown McKinney district, the second-largest historic district in Texas, with 1890s Victorian and Craftsman homes near the National Historic Landmark square, an addition is a more delicate job of matching original rooflines, porches and trim. UHS Remodeling has built additions across Collin County since 2014, with fixed pricing, a 3-year workmanship warranty, and 5,875+ completed DFW projects behind every McKinney build.
We build home additions throughout McKinney, including Stonebridge Ranch, Craig Ranch, Trinity Falls, Tucker Hill, Adriatica Village and the Historic Downtown McKinney district.
“An addition in McKinney 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.”
All ranges include design, materials, labor, permits, and 3-year warranty. Sourced against NARI Cost vs. Value 2025 regional benchmarks.
Your construction lead, Daniel B., runs your addition from framing to final inspection.
We serve home additions across nearby DFW communities. See our home additions in Frisco, Prosper, and Allen.
Sourced from NARI Cost vs. Value 2025, Texas Real Estate Commission, International Code Council, and 11 years of fielding the same calls in McKinney. Looking for ballpark numbers? Try our cost calculator.
