
ADU / Garage ConversionBrea, CA 92821
Modern Build offers adu / garage conversion services in Brea, CA 92821
Get a Free EstimateADU & GARAGE CONVERSION SERVICES
Garage Conversion Contractor in Brea, CA 92821
Modern Build transforms unused garages into permitted, fully functional ADUs in Brea, CA 92821. Whether you’re adding a rental unit, home office, or guest house, we handle the entire process from planning to construction.
Our ADU conversions in Brea are tailored to your goals and comply with all zoning, building, and safety regulations — ensuring long-term value and peace of mind.
Free Consultation
(323) 300-4130

Why Homeowners Choose Us
Trusted Experts in ADU / Garage Conversion
For earthquake readiness, we provide foundation repair and seismic retrofitting near me, reinforcing cripple walls, adding hold‑downs, and upgrading connections to meet current codes, which protects your property, lowers risk, and may improve insurability for older homes.
Only trained, insured, and background‑checked professionals work in your home, and our crews near me follow strict cleanliness protocols, daily site tidying, and floor protection standards that reduce dust, protect finishes, and keep your household operating with minimal disruption.
What’s Included in Your Brea ADU Conversion?
From garage to high-functioning living space in Brea, CA 92821.
Garage-to-Living Space Conversion
Custom Floorplans & Design
Plumbing & Electrical Installation
Framing, Drywall & Insulation
City Permits & Compliance
Energy-Efficient Windows & HVAC
Work Performed by Licensed, Insured Contractors
Financing Options Available
ADU BUILDERS IN Brea, CA
Why Convert Your Garage in Brea, CA 92821?
Garage and ADU conversions are the smartest way to expand livable space and boost property value in Brea, CA. Whether it’s for rental income, multigenerational living, or personal use, our team delivers turn-key ADU solutions that meet city code.
From initial zoning checks to final inspections, we make sure your Brea ADU project is legal, functional, and built to last.
Our Process
Step by step from concept to completion
Free Property Assessment
We inspect your garage in Brea, CA 92821, review local ADU zoning rules, and confirm feasibility based on your lot and layout.
Custom Design & Engineering
Our designers and engineers create a floorplan tailored to your goals, budget, and the existing structure in Brea.
Permit Approval & Construction
We coordinate permitting and begin construction with licensed crews from our network, providing weekly progress updates for your Brea, CA 92821 project.
Final Walkthrough & Move-In
After final inspection and occupancy approval, we walk through the completed ADU with you to ensure full satisfaction in Brea.
Why We Love Working in This Area
Homeowners in 92821, CA Trust Us
Brea, CA 92821 is a vibrant mix of established neighborhoods and newer developments. From homes near Brea Downtown to those tucked into the foothills, this ZIP offers a variety of remodeling opportunities. The area is known for its charming streets, diverse architectural styles, and a strong sense of community, making it an ideal place for homeowners looking to invest in renovations. Whether you live in a classic mid-century home with unique character or a contemporary build with modern amenities, the potential for transformation is significant. At Modern Build Home Remodeling, we’ve upgraded kitchens with modern layouts, added high-efficiency windows, and created inviting outdoor living spaces throughout 92821. Our commitment to quality craftsmanship ensures that each project not only meets but exceeds your expectations. We understand that remodeling is not just about aesthetics; it’s about enhancing your lifestyle and increasing your home’s value. From custom cabinetry to energy-efficient upgrades, our team brings tailored solutions that enhance comfort, style, and long-term value, making your home a true reflection of your personal taste and lifestyle.
Local Insights For This Area
Common Projects In Brea, CA 92821
ADUs in Brea work best with stacked wet walls. This shortens runs and keeps costs predictable.
Natural light is critical for small ADUs in Brea. Plan windows and privacy together.
Permits And Approvals
Permit Steps For ADU / Garage Conversion In Brea
Confirm ADU zoning rules, parking, egress, and separate utility metering if needed.
Check Brea permit requirements online or by phone and download submittal checklists.
Prepare drawings, product specs, and any energy or structural documents.
Submit application, pay fees, and respond quickly to plan check comments.
Schedule inspections at required milestones and keep approved plans on site.
Tip, confirm details with your local building department before submitting.
Local Guide
Guide to ADU / Garage Conversion in Brea 92821
Many lots in Brea include garages that suit ADUs. Stacking wet walls, sound control, and egress windows create quiet, livable space that rents well and stays comfortable all year.
On sloped sites in Brea, drainage and retaining details deserve early attention. That keeps paving flat and interiors dry.
Brea summers push cooling loads. Low SHGC glazing, attic insulation, sealed ducts, and balanced returns keep rooms even and quiet.
Bathrooms in Brea need continuous waterproofing with properly sized exhaust fans. That protects grout lines and keeps mirrors clear.
Stack plumbing, isolate sound, and plan daylight so compact ADU layouts feel generous.
Coordinate meter or panel capacity and mini split locations early to keep exterior runs tidy.
Financing often favors energy measures. Pair HVAC, windows, and insulation with the main scope to reduce monthly costs.
A FUNCTIONAL SPACE YOU’LL LOVE
Turn Unused Space Into Value in Brea, CA 92821
ADUs in Brea are an ideal way to generate rental income, create privacy for guests, or build a flexible home office. Modern Build delivers compliant, energy-efficient, and stylish ADU conversions that elevate your property.
As your local garage conversion experts in Brea, we handle everything — from plans and permits to construction and finishes — with full transparency and guaranteed results.
Free Consultation
(323) 300-4130

What Homeowners Say
Around Brea
Modern Build Home Remodeling is reliable and highly skilled. From our first consultation to the completion of our ADU project in Brea, their team consistently demonstrated professionalism and clear communication. They kept us informed at every stage, ensuring all our questions were answered promptly. The craftsmanship is exceptional, with attention to detail that truly reflects their commitment to quality. We felt respected and valued throughout the process, making the entire experience smooth and stress-free. I wholeheartedly recommend Modern Build Home Remodeling to anyone seeking trustworthy experts for home additions or remodeling in the 92821 area.
The remodel is beautiful thanks to Modern Build Home Remodeling. From start to finish, their communication was clear and timely, which made the entire ADU project in Brea a smooth experience. The team’s professionalism stood out—they were punctual, respectful, and attentive to every detail. Quality is clearly a priority for Modern Build; the craftsmanship exceeded my expectations, transforming my space into a functional and stylish addition. I truly appreciated how they listened and adapted to my needs throughout the process. I highly recommend Modern Build Home Remodeling to anyone looking for reliable and skilled professionals in the 92821 area.
We are thrilled with the new look of our home. Modern Build Home Remodeling transformed our ADU in Brea with exceptional craftsmanship and attention to detail. From the initial consultation, their communication was clear and timely, making the entire process smooth and stress-free. The team displayed remarkable professionalism, arriving on schedule and respecting our space throughout the project. Quality of work exceeded our expectations, with beautiful finishes that truly enhance our living area. We highly recommend Modern Build Home Remodeling to anyone seeking reliable and skilled professionals for home improvements in the 92821 area.
Rated 5.0 stars by trusted homeowners in Brea, CA 92821. Trusted by over 11+ families this year.
Brea homeowners often seek reliable permits and skilled remodelers.
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Consistent quality. Consistent 5-star ratings.






We’re here to help with all your home remodeling needs. Reach out for a free consultation or any inquiries you have about our services.
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Our expert team has been serving Los Angeles and surrounding areas for over a decade. Whether you are looking to remodel your kitchen, bathroom, or entire home, we provide top-notch services to make your vision a reality.
Let’s start transforming your space into something amazing. Get in touch today to explore how we can bring your project to life.
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