Home Addition Contractors in Denver
A home addition is one of the most impactful investments you can make — adding square footage, functionality, and real estate value without the disruption of relocating.
Red Remodels manages every phase in-house: architectural planning, permitting with Denver and surrounding municipalities, structural framing, mechanical systems, and all finishes. One team, one point of contact, no surprises.
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Types of Home Additions We Build
Room Additions
Add a bedroom, home office, playroom, or family room to your existing footprint. We match siding, rooflines, and interior finishes for a seamless look.
Second Story Additions
Double your square footage without expanding your lot. We reinforce the existing structure, add the upper floor, and tie everything together.
Sunrooms & Additions
Bring the outdoors in with a light-filled sunroom or screened addition. Three-season and four-season options available with proper insulation and HVAC.
Bump-Outs
Extend an existing room by a few feet to gain significant usable space — perfect for expanding a kitchen, dining area, or master suite.
Garage Additions
Attached or detached garage construction, including framing, concrete, doors, electrical, and finishing to match your home's exterior.
Mechanical & Electrical
All electrical, plumbing, and HVAC extensions coordinated with licensed subcontractors and inspected to Denver building codes.
Permits & Engineering
We handle architectural drawings, structural engineering, and permit submission with the City of Denver and surrounding municipalities.
Interior Finishes
Drywall, flooring, trim, paint, and fixtures — all matched to your existing home so the addition feels like it was always there.
Our Home Addition Process
Free Estimate
We assess your property, review zoning and setback requirements, and walk you through what's possible. You'll receive a detailed written estimate.
Design & Permits
We coordinate architectural drawings and structural plans, then submit for permits with your municipality — keeping you updated throughout.
Construction
Foundation, framing, mechanical rough-ins, insulation, drywall, and finishes. We manage every trade and keep the job site clean and safe.
Final Inspection & Walkthrough
We pass all required inspections and walk you through the finished addition. We don't close out until every detail meets your expectations.
Home Addition Cost in Denver
Costs vary significantly based on addition size, type, and finish level. Here's what Denver homeowners typically invest:
- Small bump-out (50–150 sq ft) $30,000 – $60,000
- Single room addition (200–400 sq ft) $60,000 – $130,000
- Full second story addition $150,000 – $350,000+
Denver permitting and labor costs are above the national average. Costs depend heavily on lot constraints, existing foundation capacity, and finish level. We provide detailed written estimates after a free on-site assessment.
Get Your Free EstimateWays to Save
- Build out instead of up — single-story additions cost less per square foot
- Keep the addition simple in shape — rectangular footprints reduce framing costs
- Match existing exterior materials to avoid whole-home reskinning
- Plan mechanical routing early to avoid costly mid-project changes
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Ready to Add More Space to Your Home?
Serving Denver, Aurora, Lakewood, Highlands Ranch, Centennial, and the entire Front Range. Contact us today for a free, no-pressure estimate.