Updated June 2026 · Awesome Additions · Sample editorial content
Typical 2026 ranges for a The Colony home addition. Your real number depends on size, finishes, and site conditions.
- Room additions — about $80k–$200k. Room additions in The Colony →
- Second-story additions — about $150k–$300k. Second-story additions in The Colony →
- Garage conversions — about $60k–$150k. Garage conversions in The Colony →
- ADUs & in-law suites — about $120k–$250k. ADUs & in-law suites in The Colony →
- Primary suite expansions — about $80k–$180k. Primary suite expansions in The Colony →
- Guest & pool houses — about $90k–$250k. Guest & pool houses in The Colony →
What drives the number in The Colony
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 The Colony.Browse our The Colony services or tell us what you're trying to add.
The Colony Services →