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Garage ADU Conversion Services Designed for Rental and Residential Use
Licensed Garage Conversion ADU Contractor in Antelope, CA Converting an existing garage is often the most cost-effective way to add a legal secondary dwelling unit to your property. To see how this project fits your budget, check our comprehensive garage conversion ADU cost calculator for local Sacramento estimates. Our team manages the structural upgrades, insulation, plumbing, and permitting needed to make the conversion fully legal.
Burnette Construction converts existing garages into permitted, code-compliant accessory dwelling units for homeowners in Antelope, CA and throughout Sacramento County. If you are researching garage conversion ADU cost in Sacramento, our team provides clear, line-item estimates based on your garage dimensions, existing conditions, and project goals.
We manage every phase of the conversion, from feasibility review and architectural planning through Title 24 energy compliance, permitting, construction, and final inspection. The result is a legal, livable ADU that is ready for rental income, family housing, or extended residential use.
Why Antelope Homeowners Choose Burnette Construction for Garage ADU Conversions
- 5+ years of licensed garage ADU conversion experience serving Antelope, CA and Sacramento County
- Local contractor with hands-on knowledge of Antelope City and Sacramento County plan check requirements
- Fully licensed, insured, and California Building Code-compliant ADU construction team
- Title 24 energy compliance integrated into every garage conversion project from the start
- Clear written scopes, transparent pricing, and defined construction milestones
- Coordinated in-house trades for efficient, organized conversion timelines
- Professional project management from permit approval through final inspection sign-off
Why Garage ADU Conversion Requires More Than a Basic Remodel
A garage ADU conversion is not a cosmetic renovation. Once a garage becomes habitable space under California law, it must meet the same life-safety, structural, energy, and building standards as any other dwelling unit in the state. The most common project failures and delays in Sacramento County occur because these critical factors are not addressed early in the process.
- Permitting accuracy matters because incomplete or incorrectly prepared plans trigger plan-check correction cycles that add months to your project timeline.
- Structural integrity issues are common in existing garages, which often require framing upgrades, shear wall additions, or header reinforcement to meet habitable space standards.
- Energy compliance under Title 24 requires insulation, HVAC systems, lighting, and windows to meet current California energy standards, which are specific to ADU conversions and not standard remodel requirements.
- Ventilation and moisture control are critical because most garage slabs have moisture migration issues and limited natural airflow that must be resolved before the space is enclosed and finished.
- MEP coordination requires electrical, plumbing, and HVAC systems to be designed as an integrated system, not added one at a time after construction begins.
- Rental readiness depends on privacy features, sound control between units, and durable finishes that hold up over years of occupancy, not months.
Garage ADU Conversion Services in Antelope, CA
Garage to Bedroom Conversion
This service converts an existing garage into a legal bedroom that meets California habitable space standards and passes all required inspections. It is commonly used for family expansion or as part of a broader ADU layout that includes additional living spaces. We address bedroom egress compliance, insulation and ventilation, and all required electrical and structural improvements. Egress compliance is the defining requirement for any legal bedroom conversion. We install single-hung egress windows sized to a minimum 5.7 square feet of net clear opening, confirming exact frame-to-glass dimensions with a digital caliper gauge before materials are ordered. Every opening is placed and documented to satisfy Sacramento County’s IRC Section R310 residential egress requirements, ensuring the project passes rough-frame inspection on the first submission.
Garage to Living Space Conversion
A garage-to-living-space conversion creates finished, usable square footage without the full scope of a complete ADU build. This option is used for family rooms, home offices, or extended living areas where a full kitchen and bathroom are not needed. Layout is optimized for natural light, airflow, and year-round comfort. Building a complete thermal envelope is the foundation of any livable garage conversion. We apply closed-cell spray polyurethane foam insulation at the existing garage door header and all perimeter wall framing before closing. An infrared thermometer is used to scan all surfaces after application, confirming zero thermal bridging across the converted envelope before the insulation inspection. This achieves California Title 24 Part 6 continuous insulation compliance for residential living spaces without additional furring layers.
Studio ADU Garage Conversion
Studio ADU conversions are designed for maximum efficiency within the garage footprint, combining living, sleeping, and kitchen areas in an open-concept layout with full bathroom integration. This configuration is ideal for rental use or guest housing and delivers strong return on investment relative to conversion cost. Fitting a full kitchen and bathroom into a compact garage footprint demands precise MEP coordination within the existing slab. We route PEX-A flexible water supply lines through core-drilled openings in the concrete to reach the new kitchen and bathroom positions. Before slab work begins, we run a drain camera inspection scope through the existing drain stub-out to confirm the line is clear and properly graded — satisfying the Sacramento County plumbing permit pre-inspection requirement for new kitchen rough-ins before the slab is disturbed.
Full Garage ADU Conversion
Our full ADU garage conversion service transforms your existing garage into a complete, independent accessory dwelling unit. To protect the living space from Sacramento County’s expansive clay subgrades, we coat the garage slab with an epoxy vapor barrier membrane before installing subflooring. Plumbing lines for the kitchen and bathroom are laid using a pipe laser level to ensure a perfect 2% slope grade.
Junior ADU Garage Conversion
Junior ADU garage conversions meet California JADU regulations while creating an efficient, code-compliant living space within the existing structure. To satisfy local Title 24 energy requirements, we install high-density R-19 fiberglass wall batts and a high-efficiency ductless mini-split HVAC system. We utilize a digital air-balancing hood to verify airflow rates pass the final building inspection.
Two-Story ADU Garage Conversion
For homeowners who want to expand vertically, we design and build second-story additions above existing garage structures. We install engineered LVL headers and structural steel posts to support the second-story vertical load, utilizing a laser transit level to ensure perfect alignment. This guarantees structural stability under local seismic zone guidelines.
ADU Garage Conversion Design and Plans
Burnette Construction prepares permit-ready architectural drawings tailored to your existing garage conditions and Sacramento City or County requirements. Every plan set includes structural engineering, Title 24 energy documentation, and full MEP coordination to support a clean plan check submission. Every plan set begins with a site-specific subgrade assessment rather than a template submission. We use a soil probe sampler to collect perimeter subgrade samples beneath the garage slab, generating a geotechnical profile that directly informs foundation upgrade specifications in the structural drawings. The completed package is assembled to satisfy the Sacramento County Building Department’s ADU conversion plan check submittal checklist — including the HERS verification documentation required by SMUD’s interconnection standards for ADU electrical connections.
Our Step-by-Step
Garage Conversion ADU Process
01
Initial Consultation and Feasibility Review
We assess your garage dimensions, slab condition, existing utilities, and zoning status to determine the most viable conversion scope for your property.
02
ADU versus JADU Determination and Scope Definition
We confirm whether a full ADU or Junior ADU best fits your property and goals, then define a clear construction scope based on those findings.
03
Design, Engineering, and Energy Compliance
Architectural drawings, structural engineering documents, and Title 24 energy compliance packages are prepared to meet all applicable requirements.
04
Permit Submittal and Plan Check
Complete plan sets are submitted to your jurisdiction. Burnette Construction manages the review process and responds to any correction notices to minimize delays.
05
Construction and Trade Coordination
Structural upgrades, insulation, framing, drywall, electrical, plumbing, HVAC, and interior finishes are completed in coordinated phases aligned with inspection requirements.
06
Inspections and Final Sign-Off
Each phase is inspected by the building department. Burnette Construction manages all inspection scheduling and final occupancy sign-off.
07
Project Closeout and Handover
We complete the project walkthrough, provide all documentation and warranties, and deliver your completed garage ADU ready for occupancy.
Ready to begin your transformation?
Garage Conversion ADU Service Areas
Burnette Construction provides garage ADU conversion services throughout Antelope, CA and the surrounding Sacramento region, including Land Park, Natomas, Elk Grove, Folsom, Fair Oaks, Carmichael, Rancho Cordova, Citrus Heights, Arden-Arcade, Curtis Park, Midtown Sacramento, and Downtown Sacramento.
Service areas include:
- Citrus Heights
- Davis
- Rocklin
- Lincoln
- Land Park
- Antelope
- Sacramento City
- Rancho Cordova
- Roseville
- Folsom
Schedule Your Garage Conversion ADU Consultation
If you are considering a garage conversion ADU in Antelope, the first step is a property and feasibility review. Burnette Construction will walk through your garage, review your goals, and provide a clear cost and timeline estimate based on your actual site conditions.
Frequently Asked Questions
How much does a garage conversion ADU cost in Antelope, CA?
Garage conversion ADU costs in Sacramento County typically range from $80,000 to $175,000 depending on garage size, existing slab condition, whether a full kitchen and bathroom are included, and Title 24 compliance requirements. We provide a detailed line-item estimate after reviewing your specific garage.
Do I need permits to convert my garage into an ADU?
Yes. All garage-to-ADU conversions in Antelope and Sacramento County require building permits covering structural, electrical, plumbing, mechanical, and energy compliance. Burnette Construction manages the full permitting process.
Is a garage conversion considered an ADU or JADU?
It depends on the scope and your property status. A full garage conversion with a complete kitchen and bathroom qualifies as an ADU. A conversion with an efficiency kitchen and certain ownership requirements may qualify as a Junior ADU. We confirm which classification applies to your project during the feasibility review.
How long does a garage conversion ADU take?
From design through final inspection, most garage conversion projects in Sacramento County take 4 to 8 months depending on plan check timelines and site conditions.
Can a converted garage be rented out legally?
Yes. A fully permitted and inspected garage ADU can be rented under California law. Burnette Construction delivers every conversion to legal occupancy standards so you can rent immediately after final inspection.
Do garage conversions require HVAC systems?
Yes. California Building Code requires all habitable spaces, including converted garages, to have code-compliant heating systems. Most ADU conversions also include cooling. We integrate HVAC planning into the design phase to ensure compliance and comfort.