Home Additions in Aurora & Denver
When a growing household runs out of room, a home addition is often a smarter move than selling in a tight Denver market. BDT Construction designs and builds additions that look original to the house — not bolted on — while adding the bedrooms, bathrooms, or living space you actually need.
Home Additions in the Denver metro
A successful addition starts long before the first shovel. We work through design, structural engineering, setbacks, and zoning so the new space is legal and feasible on your lot. Denver-metro jurisdictions have specific rules about lot coverage, setbacks, and height, and getting them right up front prevents expensive surprises later.
From there it is true ground-up construction tied into an existing home: foundation and footings sized for Colorado's expansive soils, framing that integrates with the existing structure, a roofline that matches the original, and the mechanical, electrical, and plumbing systems extended to serve the new space. Matching siding, windows, and trim so the addition disappears into the house is a craft we take seriously.
Common additions we build include primary-suite additions, family-room and great-room expansions, bump-outs that enlarge a kitchen or bath, mudrooms and entryways, and second-story additions when there's no room to grow out. Each one is engineered for the snow loads and soil conditions specific to the Front Range.
Because an addition touches the existing home — opening walls, tying in the roof, extending HVAC — we protect the occupied portion of the house, control dust, and sequence the work to keep you living there throughout when possible. Communication is constant; you always know what's happening next.
Additions are among the larger projects we take on, and they reward careful planning. You get one contractor responsible for design coordination, permitting, structure, and finishes, a clear written estimate, and a realistic schedule — so the finished space adds lasting value and feels like it was always part of your home.
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Home Additions FAQ
Straight answers to what Denver-metro homeowners ask us about this service.
How much does a home addition cost in the Denver metro?
Home additions in the Denver area generally run about $200–$400+ per square foot depending on whether you add plumbing, the foundation type, and finish level. A primary-suite addition costs more per foot than a simple bump-out. We provide a detailed written estimate after design and engineering.
Do I need a permit and engineering for an addition?
Yes. Additions require a building permit, structural engineering, and review for zoning, setbacks, and lot coverage. BDT manages the full process — design, engineered drawings, permit submittal, and inspections — through your Aurora, Denver, or county jurisdiction.
Can you build a second-story addition?
Yes, when the existing foundation and structure can support it or be reinforced. We engineer the load path, verify the foundation, and integrate the new level with the existing roof and systems. It's a great option when zoning or lot size limits building outward.
Related services
Concrete & Foundation
Foundations, footings, concrete flooring, floor leveling and drainage built for Colorado soils.
Explore serviceFraming
The skeleton of every remodel — walls, beams, headers and structural changes done square and to code.
Explore serviceKitchen Remodeling
Full kitchen renovations — cabinetry, countertops, layout changes, lighting and the trades to tie it together.
Explore serviceGet a free home additions estimate
Tell us about your home additions project and Rod's team will reach out within one business day with next steps and a fixed written estimate.
- Free, no-obligation on-site estimate
- Fixed written price — no surprises
- Licensed, insured & permit-handled
- Response within one business day
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