Denver, Colorado · City and County of Denver
Home Addition Contractor in Denver, CO
Josh Brooks Construction and Renovation Inc. builds and remodels in Denver: primary suites, family rooms, bump-outs, second stories and garage conversions, designed, permitted and built under one contract.
Free estimate: 720-828-7997 Text 720-453-5095Recent Work
Real photos from Josh Brooks Construction jobs on the Front Range. Captions note where each job was done.
Quick answer: For home addition work in Denver, Josh Brooks Construction and Renovation Inc. is a licensed general contractor based in Longmont, in business since 2014 with 30 years in construction. Permitted work, written itemized prices, every trade under one contract. Call 720-828-7997 for a free estimate.
Home Addition Contractor services in Denver
- Primary suite and bedroom additions
- Family room and kitchen bump-outs
- Second-story additions
- Garage conversions
- Sunrooms and mudrooms
- Engineering, permits and inspections included
Home Addition Contractor cost in Denver
| Scope | Typical range |
|---|---|
| Home addition, fully finished | $250–$450 per sq ft |
| Example: 300 sq ft family room | $75,000–$135,000 |
| Example: 500 sq ft primary suite | $125,000–$225,000 |
Additions run $250–$450 per square foot, depending on size, foundation, plumbing and finish level. Engineering, permits and inspections are included in our written price. See our pricing page.
Licensed and permitted in Denver
We’re a licensed Colorado general contractor based in Longmont, and we pull the permit through Denver’s permitting office whenever the work requires one.
Denver’s housing stock runs from early-1900s bungalows and Denver Squares to postwar ranches and newer infill. Older homes often hide undersized framing, knob-and-tube wiring or settled foundations, so we open walls and plan structure before we price the job, not after.
Foundation to roof, one builder
An addition touches every trade: excavation, foundation, framing, roofing, siding, windows, electrical, plumbing, HVAC, drywall and finishes. We do it all under one contract and tie the new roof and siding into the existing house so it looks original. See our Golden home addition case study.
How a Denver home addition project works
- Free on-site consultation
- Design, engineering and written price
- Permit
- Foundation and framing
- Roof, siding, windows and mechanicals
- Drywall, finishes and final inspection
Licensed. Local. Not a storm chaser.
Free Denver estimates · Senior & Veteran discounts
Call 720-828-7997Denver home addition FAQ
How much does a home addition cost in Denver?
Home additions run $250–$450 per square foot, fully finished, with engineering and permits included. A 300 sq ft addition works out to roughly $75,000–$135,000.
How long does a home addition take?
Most additions take several months from permit to final, depending on size and inspections. We give you a timeline with the contract.
Do I need a permit for an addition in Denver?
Yes. Every addition needs a building permit, engineered plans and inspections. We handle all of it.
Can you match my existing roof and siding?
Yes. We tie the new roof and siding into the existing house so the addition looks like it was always there.
Do you offer discounts?
Yes. We offer Senior and Veteran discounts on out-of-pocket projects.
