Home additions & ADUs across Denver Metro720-431-1056

Summit Custom Builders

Our home addition and ADU process.

A successful project connects household goals, property information, design decisions, and construction responsibilities. The specific scope and agreement establish each step.

  1. 01

    Share the goals

    Start with the property address, who the new space should serve, and whether you are considering an attached addition, an ADU, or still comparing options. Share any available plans, timing needs, and household constraints. The first conversation helps identify the information needed next.

  2. 02

    Establish the scope

    Discuss measurements, site conditions, design, engineering, utility connections, existing-home conditions, and the property’s approval requirements. Identify who is responsible for each part. The specific addition or ADU determines which professional services are needed.

  3. 03

    Align the estimate and decisions

    Review inclusions, exclusions, allowances, material choices, and the proposed sequence. Agree on purchasing responsibility, how changes are documented, and how construction access or work at the existing home will be handled.

  4. 04

    Coordinate construction

    Construction connects site work, structure, utilities, trades, materials, and inspections. Confirm communication expectations and keep decisions documented as the addition or ADU takes shape.

  5. 05

    Complete the handoff

    Use the project agreement to define completion, walkthroughs, remaining items, relevant inspection closeout, and product or warranty information. Keep the records together for future questions.

A closer look at construction.

Exposed timber framing above an existing brick home
Silent video

Room to grow, taking shapeSix seconds · A closer look

Home additions & ADUs

Make room for what comes next.

Bring the property address, the space you need, and your questions. We’ll start there.

Plan your addition or ADU ↗720-431-1056