5
Floor plans
3–6 mo
Typical timeline
Fixed
Pricing model
$0
Hidden surprises
Every ADU project follows the same five-step process. No surprises, no scope creep, no second-guessing who's responsible for what.
Start with your propertyWe analyze your parcel — lot size, zoning, setbacks, existing footprint. You see exactly what fits before any money changes hands.
Browse the catalog filtered to your lot. Choose your floor plan, aesthetic style, and finish grade. Get a real budget range, not a vague estimate.
Addwell produces permit-ready drawings and navigates the city process. You're not chasing inspectors or explaining what an ADU is.
Fixed-price contract. Our crews build to the same spec every time. You get weekly progress updates, not a mystery box.
Full documentation, warranty manual, and a walkthrough. Your ADU is ready to rent, house family, or use however you planned.
Every plan is available at three finish grades. The structure and layout are the same — finishes, fixtures, and details change.
Good
Functional, clean, rental-optimized. Durable materials chosen for tenancy.
Great
Elevated finishes and fixtures. Right for owner-occupied or premium rental.
Premium
Architect-grade materials. For aging-in-place, multigenerational, or high-value markets.
Custom details available at this grade.
Pricing available once you select a plan. All grades carry the same structural and mechanical specification.
Enter your address in the Longmont property finder. In 30 seconds you'll know which ADU sizes fit your lot, setbacks, and zoning.
Keep exploring
Rental income potential
Real numbers on what ADUs earn in Longmont.
ADUs for family
Aging parents, multigenerational living, childcare.
How to finance an ADU
HELOC, construction loans, and CHFA options.
Process & timeline
What to expect from contract to move-in.
Floor plans & pricing
Three sizes, three tiers, two styles.
About Addwell
Who we are and how we build.