Updated June 2026 · Awesome Additions · Sample editorial content
Typical 2026 ranges for a Flower Mound home addition. Your real number depends on size, finishes, and site conditions.
- Room additions — about $80k–$200k. Room additions in Flower Mound →
- Second-story additions — about $150k–$300k. Second-story additions in Flower Mound →
- Garage conversions — about $60k–$150k. Garage conversions in Flower Mound →
- ADUs & in-law suites — about $120k–$250k. ADUs & in-law suites in Flower Mound →
- Primary suite expansions — about $80k–$180k. Primary suite expansions in Flower Mound →
- Guest & pool houses — about $90k–$250k. Guest & pool houses in Flower Mound →
What drives the number in Flower Mound
Square footage and complexity, plumbing, roof and exterior tie-ins, finish level, and site access. We walk the home, prepare a feasibility report, and give you a real estimate — the number in the contract is the number you pay.
See the metro-wide DFW cost guide for more.
Ready to talk specifics?
We design and build additions in Flower Mound.Browse our Flower Mound services or tell us what you're trying to add.
Flower Mound Services →