Thinking about adding on? Compare building out versus building up and see how size and finish move the budget.
Home Addition Cost Estimator
Estimate a planning-stage range for a Houston home addition. Building up costs more than building out — adjust the type, size, and finish to compare.
Estimated construction budget —
Where the budget typically goes
Planning estimate based on 2026 Houston market ranges — not a quote. Land, design fees, and site-specific conditions are excluded. Every addition is different — request a consultation for an accurate budget.
For the complete breakdown — structural tie-ins, "add-on vs. move," and making an addition look original to the house — read the Home Addition Cost Guide.