Mile High Home Group – Welcome to Denver

Duplexes are fully legal throughout Colorado, governed by local zoning rather than statewide bans—most cities and counties permit them in residential or multi-family zones, though restrictions vary by location and density. With 15+ years in Denver real estate and thousands of transactions, I’ve helped investors navigate duplex approvals from Littleton real estate subdivisions to urban infills, ensuring compliance amid Colorado housing market demands for affordable units.

Zoning and Permitting Basics

Colorado follows standard land use codes: duplexes (two units on one lot) fit R-2 or multi-family zones in places like Denver, Aurora, and Colorado Springs. Highlands Ranch real estate, under stricter HOA and metro district rules, often limits them to designated pockets. Rural counties like Douglas allow them with larger setbacks and septic approvals.

No state-level prohibition exists, but cities enforce via building permits, occupancy limits (typically 2 per bedroom), and parking minimums. ADUs (accessory dwelling units) complement duplexes, legalized statewide for owner-occupied properties under HB21-1127.

Common Restrictions and Variations

Denver’s recent upzoning eases duplex construction in single-family areas via “missing middle” reforms. Littleton requires site plans for drainage and traffic impact. HOA covenants in Highlands Ranch real estate can block rentals, even if zoned legally—review CC&Rs early.

Short-term rentals face extra hurdles: Denver caps at 180 days/year per unit; mountain towns vary. Fire codes mandate separate meters and sprinklers in older builds.

Practical Advice for Buying or Building

From hands-on deals:

• Check zoning online via county GIS maps—look for R-MF or duplex overlays.
• Verify utilities: separate electric/gas/water for true duplex status.
• Budget for inspections covering foundations, roofs, and egress.
• For investors, confirm FHA/VA financing allows 2-4 units with owner-occupancy.
• Consult planners pre-offer; variances cost $5K+ and take months.

House hacking duplexes builds equity fast in this market. Many clients start here, scaling portfolios into lasting relationships.

If you’d like honest guidance, market insight, or a no-pressure conversation about duplex opportunities in your situation, reach out—I’m here. Visit www.MileHighHomeGroup.net to search properties, explore Denver, learn more about me, and connect.