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ADU Guide for Lakewood Homeowners

Lakewood is Jefferson County’s largest city and one of Denver’s most transit-connected suburbs. Here’s how Colorado’s ADU law applies to Lakewood properties and what types make the most sense.

Lakewood’s ADU Opportunity

Lakewood has updated its zoning code to comply with Colorado’s HB 24-1152, allowing ADUs on single-family lots through administrative approval. The city’s W Line light rail corridor has created strong rental demand in neighborhoods near stations, making ADU rental income particularly reliable here.

Lakewood ADU Rules

ADUs in Lakewood must meet the city’s dimensional standards — setbacks are generally 5 feet on sides and rear, and lot coverage limits apply. Lakewood eliminated the public hearing requirement for ADU permits; applications that meet objective standards are approved administratively. Maximum ADU size is 800 sq ft (or up to 50% of the primary home’s floor area, whichever is greater, in some zones).

Best ADU Types for Lakewood

Basement ADUs ($35K–$105K): Mid-century homes common throughout Lakewood have deep basements that are practical conversion candidates, especially those with egress windows already in place.

Detached Backyard Cottages ($165K–$320K): Larger lots in east and west Lakewood accommodate new construction. Strong rental demand near W Line stations supports the investment.

Garage Conversions ($40K–$120K): Detached single-car garages are common in older Lakewood neighborhoods and convert well into studio or one-bedroom ADUs.

Lakewood ADU Numbers

  • Avg Monthly Rent$1,400–$2,100
  • Basement ADU Cost$35K–$105K
  • Backyard Cottage$165K–$320K
  • Permit Timeline8–18 weeks
  • Owner Required?No

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