Attic Conversion in Denver, CO
Most Denver attics are insulation, dust, and wasted square footage. If the structure is there, the ceiling height works, and the floor joists can carry the load — that space can become a bedroom, a home office, or a primary suite. Arch Design & Build handles the engineering and the build
How Much Does an Attic Conversion Cost in Denver?
Attic conversions vary more than almost any other project. The existing structure determines everything. Ceiling height, joist depth, rafter configuration, and roof pitch all affect what’s possible and what it costs. Some attics need minimal structural work. Others require new dormer framing, sistered floor joists, and a full staircase rough-in.
We assess the attic structure on the first visit and tell you exactly what the conversion requires. No guesswork. Free of charge
Basic conversion
Basic conversion — bedroom, drywall, lighting, fixed stair
from
$40,000 – $65,000
Mid-range
Mid-range — bedroom, closet, full bathroom rough-in
from
$65,000 – $100,000
Full primary
Full primary suite with dormers, bathroom, custom finishes
from
$100,000 – $160,000+
How We Work
1
Free Structural Assessmen
We get into the attic. Measure headroom, evaluate the floor joists, check the roof framing. You get a real answer on viability before any design dollars are spent
2
VR/3D Design
Full architectural drawings and a VR walkthrough of the finished space. Dormer placement, staircase location, bathroom layout — decided before a permit is filed
3
Permitting
Attic conversions require building permits through Denver CPD, including structural engineering documentation for floor and roof modifications. We handle everything
4
Construction
Fixed price. Our crews. One contact through final inspection
Financing Available
Don’t let budget hold you back. We work with trusted partners
Denver Permits for Attic Conversions
Do I need a permit to convert my attic in Denver?
Yes. Any attic conversion that creates habitable space requires a building permit through Denver Community Planning and Development. Adding a bedroom triggers egress requirements — which typically means a dormer window or skylight meeting minimum opening dimensions. Structural changes to the roof framing or floor system require stamped engineering drawings.
We prepare all documentation, manage CPD review, and schedule inspections. You don’t file a form
Is Your Attic Convertible?
Three things determine whether your Denver attic works as livable space:
Ceiling height — Denver requires 7 feet minimum in habitable rooms. Many older Denver homes have enough pitch to work with — but it needs to be measured, not assumed.
Floor joist capacity — Attic joists are designed for storage loads, not living space. Sistering or replacing joists is a standard part of most conversions, but it affects the budget.
Stair access — A proper staircase takes floor space from the level below. We’ll show you where it fits during the design phase
Why Arch Design & Build
Full architectural design and VR preview before permitting begins
Structural engineering in-house — attic conversions live and die by the engineering
All Denver CPD permits and inspections managed by our team
Fixed-price contracts
Licensed, bonded, and insured in Colorado
Where We Work in Denver
We convert attics throughout South Denver — Washington Park, Hilltop, Mayfair, University Park, and Congress Park. The older two-story homes in these neighborhoods, built between the 1920s and 1950s, are often the best candidates. Primary service zip codes: 80209, 80210, and 80220
Frequently Asked Questions
How do I know if my attic has enough headroom?
We measure during the free consultation. If you want a rough check before calling: stand in your attic and see if you can stand fully upright in the center. If yes, there’s a reasonable chance it works. We’ll confirm the exact figures.
Will an attic conversion require a new staircase?
In almost every case, yes. Pull-down attic stairs don’t meet code for habitable space. A fixed staircase is required — we design it as part of the project to minimize its footprint on the floor below.
Does an attic conversion add value to a Denver home?
Adding a legal bedroom — with proper egress and permitted ceiling height — meaningfully increases appraised value and expands the buyer pool at resale. The exact impact depends on the neighborhood and the quality of the finish.
Can the attic become a primary bedroom suite?
Yes, and it’s one of the best uses of the space. Dormers create headroom, the suite sits away from the rest of the household, and the views from the top floor of a South Denver home are often better than anything on the main level.
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Let's Start With the Attic
Free structural assessment. We’ll tell you exactly what’s possible — and what it’ll cost
Arch Design & Build
9800 Mount Pyramid Ct, Suite 400, Englewood, CO 80112