Licensed Attached ADU Design-Build Contractor

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Professional Attached ADU Construction Contractor in Sacramento, CA

Burnett Construction LLC operates as a professional design-build attached ADU construction contractor in Sacramento, CA, managing the entire process from feasibility analysis and architectural planning to permitting and construction.

Why Homeowners Choose for Attached ADU Constructi

5+ years of hands-on experience delivering attached ADU construction projects
Locally based contractor with active knowledge of Sacramento city and county requirements
Fully licensed and insured attached ADU construction contractor
Proven expertise in attached ADU additions, structural tie-ins, and shared-wall assemblies
Permit-driven planning aligned with local building and inspection standards
Occupied-home construction workflows tailored for attached ADU projects
Clearly defined scopes, allowances, and construction milestones
Coordinated in-house & trade partner execution under one construction plan
Professional project closeout with inspections, documentation & warranty handoff

Why Attached ADU Construction Is Critical to Get Right

An attached ADU is not just an addition, it becomes part of your home’s structure, systems, and daily use. Mistakes at the planning stage can lead to inspection failures, budget overruns, or long-term performance issues.

Structural integration: The new unit must tie into the existing foundation, framing, and roofline without compromising load paths or weatherproofing.
Fire and sound separation: Shared-wall assemblies must meet strict code requirements to pass inspections and protect both living spaces.
Utility integration: Electrical load, plumbing routing, HVAC strategy, and venting must be coordinated early to avoid rework.
Occupied-home construction: Poor sequencing and site control can disrupt daily life for months.
Permit complexity: Sacramento permitting timelines depend heavily on submitting a complete, well-coordinated plan set.

What are Our Attached ADU Construction Services in Sacramento, CA

Attached ADU projects are most successful when delivered as a complete design-build service. Each phase below is planned to reduce uncertainty and keep your project moving forward.

Attached ADU Design & House Planning Service

As a full-service attached ADU design-build contractor, Burnett Construction LLC develops space plans that balance code compliance, functionality, and long-term property value.

Space planning for studio, one-bedroom, and two-bedroom attached ADU layouts
Entry placement strategies to support privacy, circulation, and fire separation
Daylighting, egress, and interior flow optimization
Exterior design coordination for rooflines, windows, and finish continuity
Layouts aligned with rental use, multigenerational living, or aging-in-place objectives

Attached ADU Construction Service

Burnett Construction LLC delivers attached ADU construction using an occupied-home methodology that prioritizes safety, quality control, and schedule discipline.

Demo, preparation, and site protection planned specifically for occupied homes, including access control and dust management
Foundation and framing integration that ties the new ADU securely into the existing structure
Fire separation and soundproofing using code-compliant shared-wall assemblies
Roofing and waterproofing continuity to protect both the new unit and the existing home

Garage-to-Attached ADU Conversions Service

Underused garages can be transformed into fully functional attached ADUs. We handle insulation upgrades, moisture control, layout planning, and code-compliant living conversions designed for durability and comfort.

Two-Story Attached ADU & Bump-Out Extensions

We provide two-story attached ADU and bump-out extension services for homeowners who need to expand living space when lot coverage, setbacks, or yard constraints limit ground-level construction. This service is delivered through a controlled design-build process that addresses structural capacity, load-path continuity, and construction sequencing from the outset.

Junior ADU (JADU) Retrofit

Burnett Construction LLC provides professional Junior ADU (JADU) retrofit services for qualifying single-family residences, helping homeowners create efficient, code-compliant living space within the existing structure. This service is ideal for properties that meet local JADU eligibility requirements and benefit from shared infrastructure.

Searching for a Professional ADU Building Service in Sacramento County?

An attached ADU requires precise coordination between planning and construction. A structured ADU building service ensures the new unit integrates safely with your existing home. It also protects structural load paths, utility systems, and fire-rated assemblies from the start.

Homeowners looking for licensed ADU contractors Sacramento county benefit from a team that understands local permitting standards and inspection requirements. In addition, experienced contractors manage trade sequencing, site protection, and quality control throughout the build. As a result, your attached ADU is delivered efficiently, safely, and fully code-compliant.

Our Step-by-Step Attached ADU Construction Process

Property Evaluation & Feasibility Review
We assess your property, goals, and zoning constraints to determine the best attached ADU approach.
Concept Planning & Scope Definition
We define a code-aligned layout and construction scope to prevent change orders later.
Permit-Ready Planning & Compliance Review
Plans are prepared to meet Sacramento zoning, structural, and energy requirements.
Construction & Structural Integration
Foundation, framing, utilities, insulation, and interior build-out are completed in stages.
Inspection Coordination
Each phase is prepared for inspection to avoid delays or corrections.
Final Finishes & Walkthrough
We complete finishes, finalize details, and deliver a completed attached ADU ready for use.

Before and After: What Changes With the Right Contractor

Before

Unclear scope and constant changes
Permit delays and inspection failures
Disruption to daily life
Add-on appearance that doesn’t match the home

After

Permit-ready planning and defined milestones
Coordinated construction with fewer surprises
Livable home during the build
Seamless integration with the existing structure
A finished ADU ready for rental or family use

Our Attached ADU Service Areas in Sacramento, CA

We provide ADU design-build services throughout:

Sacramento County

Sacramento (City)

Start Your Attached ADU Project in Sacramento

If you are considering an attached ADU and want clear answers on feasibility, cost, and timeline, start with a site assessment.

Frequently Asked Questions

What is an attached ADU in Sacramento?

An attached ADU is a secondary living unit that shares at least one wall with the primary home. It must meet local zoning, building, and fire-separation requirements.

How long does it take to build an attached ADU?

Timelines vary, but most attached ADU projects include several months for design and permitting followed by construction. Permit readiness has the biggest impact on speed.

Do you handle attached ADU permits in Sacramento?

Yes. We manage permits for both the City of Sacramento and Sacramento County, including plan-check responses and inspections.

How much does an attached ADU cost compared to a garage conversion?

Attached ADU additions typically cost more than garage conversions due to new foundations, framing, and tie-ins. Final pricing depends on scope and finishes.

Can I live in my home during construction?

In most cases, yes. We plan construction sequencing, access, and site protection specifically for occupied homes.

Will my electrical panel need an upgrade?

Some attached ADUs require panel upgrades depending on size and load. This is evaluated during feasibility.

Can an attached ADU have a separate entrance?

Yes. Many attached ADUs are designed with independent entrances for privacy and functionality.