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Broomfield sits between Denver and Boulder — giving ADU rentals access to two of Colorado’s strongest job markets. Here’s how ADU rules work in Broomfield today.
Broomfield is its own combined city and county — sitting strategically between Denver and Boulder along US-36. This location creates persistent rental demand from employees at major employers like Oracle, Vail Resorts, and the numerous tech firms along the corridor. HB 24-1152 applies to Broomfield, enabling ADU construction on single-family lots.
Many Broomfield neighborhoods have HOAs. Under HB 24-1152, HOAs cannot ban ADU construction. ADU applications are processed by the City and County of Broomfield through administrative review — no public hearings if plans meet objective standards. Setbacks follow accessory structure standards (typically 5 feet sides and rear).
Detached Backyard Cottages ($170K–$340K): Broomfield’s newer housing stock includes many properties with rear yards that can accommodate detached construction. Strong corporate-sector rental demand supports premium rates.
Basement ADUs ($38K–$105K): Mid-size homes throughout Broomfield have basement conversion potential, especially those with daylight or walk-out configurations.
Garage Conversions ($45K–$130K): Three-car garages common in Broomfield subdivisions provide the most efficient ADU conversion path while maintaining parking.
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