Adu company — Fort Collins, CO | AccessoryDwellingUnit Services

Looking for adu company in Fort Collins, CO? Call AccessoryDwellingUnit Services for a contact a provider — no obligation. Licensed adu builders serve Fort Collins and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

A professional company handles the heavy lifting, including architecture, engineering, permit submittals, and the actual construction labor. You need an experienced team when you want to ensure your unit is built to code, structurally sound, and completed on a predictable schedule. We act as your single point of contact, coordinating every trade and inspection so you aren't managing subcontractors yourself. We provide professional oversight from start to finish. Exact pricing confirmed free on the call.

Frequently asked in Fort Collins

What are the disadvantages of ADUs in Fort Collins?

In Fort Collins, potential disadvantages of ADUs can include initial construction costs and the time needed for permitting. You'll also want to consider how an ADU might affect your property's yard space and utility capacity. Consulting with professionals familiar with Fort Collins zoning is recommended.

How much does an ADU cost in Colorado?

The cost of an ADU in Colorado, including Fort Collins, varies significantly. Factors like the size of the unit, the quality of materials, and specific site conditions on your property will influence the price. A personalized quote from a local pro is the best way to get an accurate estimate for your Fort Collins ADU.

What are the rules for ADUs in Colorado?

Colorado has state laws encouraging ADUs, but local Fort Collins ordinances will add specific requirements. These typically cover lot size, parking, height restrictions, and design standards. Understanding these combined rules is crucial for a successful ADU build in Fort Collins. We can help clarify these for you.

Is an ADU allowed in Fort Collins?

Yes, ADUs are generally allowed in Fort Collins, Colorado, following state encouragement and city-specific regulations. You must comply with local ordinances concerning size, placement, and parking. A professional consultation will confirm your property's eligibility and guide you through the Fort Collins approval process.

However, there may be other state or local programs available in Colorado to assist with ADU development. We can help you explore potential funding options relevant to Fort Collins.

Can I build an ADU on my property in Fort Collins?

Generally, if your Fort Collins property meets the city's zoning and lot size requirements, an ADU is possible. Fort Collins has specific guidelines for setbacks, maximum unit size, and accessory structure placement. A professional site evaluation will confirm your property's suitability and guide you through the process.

Also serving nearby: Greeley · Longmont · Boulder · Thornton · Westminster

All cities in Colorado →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

170,376residents

2,976per sq mile

8ZIP codes served

Serving all of Fort Collins — population 170,376; about 2,976 residents per square mile across 57.2 sq mi. ZIP codes covered include 80521, 80522, 80523, 80524, 80525, 80526, 80527, 80528.

Neighborhoods served in Fort Collins: Old Town Fort Collins, Drake Neighborhood, University District, South Fort Collins, Harmony Corridor — and every surrounding area.