Key Facts Ordinance Text Full Breakdown Violations FAQ Sources More in Lakewood

Lakewood, CO Accessory Structures: ADU Rules (2026)

Some Restrictions

Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

ADU rules in Lakewood, CO, also called accessory dwelling unit regulations or granny flat ordinances, cover setbacks, owner-occupancy, parking, and permit requirements.

Key Facts

ADUs per lot: one maximum
Max detached height: 30 feet
Max floor area: 1,400 sq ft
Design: must match primary dwelling
Zone status: R districts, limited use

ADU Eligibility Quick-Check

An Accessory Dwelling Unit (ADU) is a smaller, independent living unit on the same lot as a single-family home: converted garages, detached cottages, basement or attic conversions, and attached additions all qualify. Most states have streamlined ADU permitting since 2020, but local rules still control size, height, and setback.

Is your lot zoned single-family or multi-family residential?
Does your lot have at least 1,200 sq ft of buildable space?
Is your existing home owner-occupied (in most states this is not required, but some require it for ADU permits)?
Will the ADU stay under your state's size cap (commonly 850-1,200 sq ft for detached)?
Can you provide one off-street parking space (waived in many states within 0.5 mi of transit)?

If you answered 'yes' to most of these, you likely qualify in Colorado under recent ADU streamlining laws. The Lakewood, CO rules below cover local size, height, and setback requirements.

Summary

Lakewood limits accessory dwelling units to one per lot in R zone districts, capping detached ADU height at 30 feet and floor area at 1,400 square feet, with primary-structure dimensional standards applied throughout.

An accessory dwelling unit is permitted as accessory to a primary single-family dwelling unit.
2. Waivers are allowed only if approved in conformance with Section 17.2.6.4(A).
3. Only one accessory dwelling unit shall be permitted per lot.
4. A permit for an ADU shall only be issued to an owner occupant or their designee.
5. Dimensional Standards and Location:
a. An accessory dwelling unit shall comply with all primary structure dimensional standards for the applicable zone district.
b. The maximum height of a detached accessory dwelling unit shall be 30 feet.
c. An accessory dwelling unit shall not be located in front of the primary dwelling unit.
6. Single-family Dwelling Design Requirements:
a. An accessory dwelling unit shall not exceed 1400 square feet of gross floor area.
b. External alterations that would change the residential character of the property shall be prohibited.
c. The exterior of an accessory dwelling unit shall be similar in appearance to that of the existing primary dwelling unit including, but not limited to, materials, color, roof pitch and detailing.
d. Accessory dwelling units located above garages or located on a second floor

Source: Lakewood Zoning OrdinanceView official code

Full Breakdown

The Zoning Ordinance's supplemental standards treat an ADU as a limited use in R zone districts, accessory only to a single-family primary dwelling, capped at one per lot. It must meet the primary structure's dimensional standards, cannot exceed 30 feet if detached or sit in front of the primary dwelling, and is capped at 1,400 square feet with an exterior that matches the primary dwelling's materials, color, roof pitch and detailing. Detached ADUs or additions also trigger Article 6 residential design review, and parking is required under Article 8 unless on-street parking is unavailable.

Violations & Fines

A detached ADU over 30 feet, over 1,400 square feet, sited in front of the primary dwelling, or a second ADU on the same lot violates the standard and can be denied zoning review.

Frequently Asked Questions

Can I build more than one ADU on my Lakewood lot?

No. Lakewood's Zoning Ordinance permits only one accessory dwelling unit per lot, accessory to a single-family primary dwelling.

How tall can a detached ADU be in Lakewood?

Up to 30 feet for a detached unit; attached or above-garage ADUs must meet the primary structure's dimensional standards for the zone district.

Sources & Official References

[1]Lakewood Zoning Ordinance, Article 4 (City of Lakewood, CO)

Other rules in Lakewood

Parking Rules: Overnight ParkingSome Restrictions Shed & Carport RulesSome Restrictions ADU Owner OccupancySignificant Restrictions Noise Ordinances: Amplified Music & Outdoor SoundSome Restrictions Noise Ordinances: Vehicle NoiseSome Restrictions Noise Ordinances: Barking DogsSome Restrictions Noise Ordinances: Leaf Blower RulesSome Restrictions Parking Rules: EV ChargingSome Restrictions

All Lakewood rules

How Lakewood compares: Easiest Cities to Build an ADU·Compare Lakewood to another location·View the Colorado accessory structures overview

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ADU Rules in Nearby Cities

How other cities in Jefferson County handle adu rules.

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