Learn · Process

What to expect,
week by week.

An ADU project in Longmont typically takes 3–6 months from signed contract to move-in. Here's how the timeline breaks down and what happens at each stage.

The Addwell timeline

1

Property assessment & design selection

1–2 weeks

    This is the "kitchen table" phase. No commitment until you sign.

    2

    Permitting

    4–8 weeks

      Longmont's ADU permit process is well-established. Pre-approved plan elements help. Typical review is 4–6 weeks; 8 weeks is conservative.

      3

      Construction

      8–14 weeks

        Panelized construction significantly compresses the framing phase. You get weekly photo updates throughout.

        4

        Closeout & handoff

        1 week

          Longmont's ADU permit process

          Longmont has one of the most straightforward ADU ordinances on the Front Range. Here's what makes it work:

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          Ready to see what's possible?

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          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.

          Floor plans & pricing

          Three sizes, three tiers, two styles.

          About Addwell

          Who we are and how we build.