ADU Builders Serving the Denver Metro Area
Complete design-build coordination for detached, attached and garage conversion ADUs, including property review, architectural planning, permitting, utility coordination and construction management.
More Housing Options on a Single Residential Property
ADUs Can Be Built in Several Configurations
An ADU may be detached from the primary home, connected through an addition, incorporated within the existing house or created through an eligible garage conversion.
Each configuration provides the living area, kitchen, bathroom, sleeping space and building systems required for residential use. The completed space may accommodate family members, guests, long-term tenants or changing household needs.
The property layout, available space, utility access, zoning and local building requirements determine which ADU configuration can be considered.
THE BUILD PROCESS
Four Stages of an ADU Project
An ADU must satisfy property constraints, zoning standards, building codes, utility requirements and permit review before construction can proceed.
Organizing the project into four stages establishes clear checkpoints for property viability, approved plans, construction readiness and final authorization for residential use.
Final Approval & Handover
Final inspections, system testing and remaining completion items are addressed before closeout. The project concludes with the required occupancy approval, a client walkthrough and applicable documentation for the completed ADU.
Construction & Field Coordination
Structural work, utility connections, building systems and interior finishes are completed according to the approved plans. Trades, materials and inspections are coordinated throughout the build.
Design, Engineering & Permits
Floor plans, exterior design, structural details, site information and utility requirements are developed into a coordinated permit package. Required revisions are addressed during review.
Property Feasibility
The property is reviewed for zoning, setbacks, lot coverage, height restrictions, easements, construction access and possible utility routes. These findings help determine which ADU configurations can be considered and what limitations must guide the plans.
ADU CONSTRUCTION SCOPE
What Goes Into a Complete ADU
Construction requirements vary according to the type of ADU and the existing property conditions. A detached unit may require site preparation, a new foundation and complete utility connections. Attached, interior and garage conversion ADUs involve modifications to an existing structure and integration with its building systems.
The final scope is determined by the proposed configuration, structural conditions, utility capacity, approved plans and local building requirements.
An ADU must function as a complete residential unit. Its construction scope brings together structural work, utilities, life-safety requirements, energy performance and finished living space.
Core ADU Construction Components
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Site preparation, drainage and foundation work where required
Structural framing, modifications and exterior enclosure
Plumbing, electrical, heating, cooling and utility connections
Fire separation, insulation, ventilation, and safety requirements
Kitchen, bathroom, living and sleeping areas
Interior finishes, fixtures, appliances and final inspections
ADU PROJECT BUDGETING
What Influences the Cost of an ADU?
An ADU budget depends on the proposed configuration, the condition of the property or existing structure, utility requirements, design complexity and level of finish. A detached ADU has a different construction scope than an attached unit, interior ADU or garage conversion, even when the finished spaces are similar in size.
01
ADU Type & Starting Conditions
Detached, attached, interior and garage conversion ADUs each begin with different structural conditions and construction requirements.
02
Site Work & Construction Access
Excavation, grading, drainage, foundation work, equipment access and material staging can significantly affect a detached ADU project.
03
Utility Connections & Capacity
The location and available capacity of water, sewer, electrical, gas, heating and cooling systems determine the work needed to serve the unit.
04
Architecture, Engineering & Permits
Site plans, architectural drawings, structural engineering, energy documentation, permit fees and required revisions contribute to the project budget.
05
Size, Layout & Building Systems
Square footage, number of rooms, structural design, kitchen and bathroom placement and mechanical systems influence material and labor requirements.
06
Interior Finishes & Equipment
Cabinetry, flooring, fixtures, appliances, lighting and custom storage create meaningful cost differences between ADUs with similar layouts.
A More Useful ADU Budget
A dependable budget requires more than choosing an ADU size. Reviewing the proposed configuration, property conditions, utilities and design requirements establishes a construction scope that can be priced with greater accuracy.
WHERE WE BUILD
ADU Construction Across the Denver Metro
Home Builder Colorado plans and builds ADUs throughout the Denver Metro Area and surrounding communities. Each property is reviewed for zoning, lot configuration, setbacks, utility access and local permitting requirements before the project scope is established.
Frequently Asked Questions
ADU PROJECT CONSULTATION
Tell Us About Your Property and ADU Plans
Share the project location, the type of ADU you are considering and what currently exists on the property. If you have a survey, drawings or preliminary plans, let us know what has already been completed.
We will review the information before contacting you so the consultation can address property constraints, utility requirements, design direction and the decisions needed to move the project forward.
Preliminary property and project-fit review
Discussion of ADU configuration and utility requirements
Practical direction for the next planning step
ADU CONFIGURATIONS
ADU Types We Build
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Detached ADUs
A stand-alone residential structure offering privacy and greater flexibility in placement, access and layout.
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Attached ADUs
A complete living space connected to the primary residence through a carefully planned addition or expansion.
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Garage Conversion ADUs
An eligible attached or detached garage converted into a permitted residential unit with finished living space and required building systems.
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Above-Garage ADUs
A residential unit constructed above a garage with dedicated access and coordinated structural, utility and fire-safety planning.
An ADU can be created as a new structure, connected to the primary residence or developed from eligible existing space. The right configuration depends on the property, intended use and applicable local requirements.