ADU & Accessory Dwelling Unit Builder in South Denver

Accessory dwelling units (ADUs) add flexible living space and rental potential to your property. Custom Professional Renovations designs and builds ADUs across South Denver - from basement and garage conversions to detached units - handling design, permits, and construction under one roof.

Book a free consultation or contact us.

Bright finished basement ADU living space with kitchenette in a South Denver home.

Types of ADUs we build

Basement and interior conversions, attached additions, garage conversions, and detached ADUs where zoning allows. We help you choose the right approach for your lot, budget, and goals.

Converted garage accessory dwelling unit with living space and natural light.

Permits and zoning

ADU rules vary by city across the south metro. We research what your jurisdiction allows and manage permitting and inspections so your project stays compliant.

ADU floor plan and permit drawings on a contractor's desk during planning.

Why design-build for an ADU

One team handles layout, utilities, finishes, and construction, which keeps an ADU on budget and on schedule.

Design-build contractor and homeowner reviewing ADU plans together.

Frequently Asked Questions

Can I build an ADU on my property in South Denver?

It depends on your city's zoning - many South Denver jurisdictions allow ADUs in some form. We check your local rules and design within them.

How much does an ADU cost?

ADU cost varies widely by type and size; a basement or garage conversion costs far less than a detached new build. We provide a free fixed-scope estimate after a site visit.

Do you handle ADU permits?

Yes. We manage design, permitting, and inspections with your city or county from start to finish.

Get started in South Denver

Custom Professional Renovations offers a free consultation and a 2-year workmanship warranty across Englewood, Greenwood Village, Centennial, Highlands Ranch, Littleton, Lone Tree, Parker, Castle Rock, and the surrounding South Denver communities. Book a free consultation.