Everything homeowners ask about building an ADU in Colorado Springs — answered with 2026 data.
Yes, ADUs are allowed in Single-family residential zones in Colorado Springs, CO. The maximum size for a detached ADU is 50% of principal dwelling or 1,250 sq ft (whichever is less); 750 sq ft max if principal < 1,500 sq ft. Attached ADUs can be up to 50% of principal dwelling or 1,250 sq ft (whichever is less). Colorado Springs has an ADU-friendliness score of 7/10. Check our full Colorado Springs ADU rules page for complete zoning details.
ADU construction in Colorado Springs typically costs $130,000-$260,000. The cost per square foot averages $130-$260. Garage conversions are more affordable at $65,000-$155,000, while prefab ADUs cost $95,000-$210,000. Permit fees add $1,800-$3,000 to your budget. See our detailed Colorado Springs ADU cost guide.
Detached ADUs in Colorado Springs can be up to 50% of principal dwelling or 1,250 sq ft (whichever is less); 750 sq ft max if principal < 1,500 sq ft. Attached ADUs are limited to 50% of principal dwelling or 1,250 sq ft (whichever is less). Junior ADUs (JADUs) have a cap of 700 sq ft. Maximum height is 16 ft (detached ADUs); 25 ft (converted garage ADUs). You are allowed up to 1 ADU per lot on a qualifying lot.
Rear setback: 12 feet. Side setback: 5 feet. Front setback: 20 feet. Note that garage conversions may be exempt from setback requirements if the existing structure is already within the setback area.
No parking required (removed April 2025). Many cities and states have been relaxing ADU parking requirements in recent years. In California, no additional parking is required for ADUs near transit.
Not required (removed April 2025, per CO HB 24-1152). Note that owner-occupancy rules vary by state law — California and several other states have eliminated this requirement for standard ADUs.
The ADU permit review timeline in Colorado Springs is typically 45-65 days. The plan check process takes approximately 2-3 weeks. Pre-approved plans availability: Available for select types.
Average ADU rental income in Colorado Springs: 1-bedroom units rent for $1,250-$1,700/mo/month, 2-bedroom units for $1,600-$2,200/mo/month. Short-term rentals: Not typically permitted. Expected ROI: 8-10% annual return.
The minimum lot size for an ADU in Colorado Springs is 4,500 sq ft. This applies to detached ADUs — garage conversions and JADUs may have different or no lot size requirements.
Garage conversions are one of the most popular and affordable ADU options. In Colorado Springs, a garage conversion typically costs $65,000-$155,000. The key advantages are lower cost (no foundation work), potential setback exemptions, and faster permitting. Read our complete garage conversion guide.