Garage-to-Bedroom, Home Office, Guest Suite, Rental Unit, or In-Law Unit Conversion in Huntington Beach, CA
We turn underutilized garages into valuable living spaces that perfectly match your vision and lifestyle needs. Our Huntington Beach team specializes in garage-to-bedroom, home office, guest suite, rental unit, or in-law unit conversions.
With years of experience serving Orange County homeowners, we handle every aspect of your garage conversion—from initial concept and space-maximizing design to permit acquisition and quality construction. Our conversions not only add functional square footage to your property but can increase your home's market value by 10-15% when professionally completed.
We pride ourselves on delivering conversions that blend seamlessly with your existing home while meeting all local building codes and regulations. Our process typically takes 4-8 weeks from permits to completion for comprehensive rental units with kitchenettes and bathrooms.
Unlike general contractors, our specialized focus on garage conversions means we anticipate common challenges before they arise, ensuring your project stays on schedule and within budget. Our team coordinates all necessary permits—building, electrical, plumbing, and mechanical—so you don't have to navigate Orange County's regulations alone.
Ready to reimagine your garage space?
Contact Refined ADU Builder & Garage Conversions for your free consultation today.
Our Garage Conversion Services
We focus on maximizing your existing space to increase comfort and functionality. Each project is customized to meet specific needs while complying with Huntington Beach building codes and safety standards.
Garage-to-Bedroom Transformations
We convert garages into fully insulated, climate-controlled bedrooms. This includes installing drywall, flooring, windows, and electrical outlets for convenience and comfort. We ensure proper ventilation and natural light to create a healthy living environment.
Our team handles permits and inspections to guarantee legal compliance.
Soundproofing is added if needed to separate the new bedroom from the rest of the home. We also integrate closets and storage options to optimize space usability.
Home Office Conversions
We design garage spaces tailored for productivity, with custom layouts that include built-in desks and storage. Lighting is carefully planned to reduce eye strain and enhance focus during work hours.
Electrical setups support multiple devices and high-speed internet connections. We consider noise control measures to minimize distractions from outside or the main house.
Climate control is a priority to maintain comfort during long working hours. Our installations include HVAC integration or standalone units depending on your preferences.
Guest Suite Design and Build
Our guest suite conversions provide private, comfortable accommodations for visitors. We add separate entrances where possible to enhance privacy for both guests and homeowners.
The suite includes a bedroom, bathroom, and small kitchenette if desired. We apply efficient space planning to include necessary amenities without overcrowding.
We prioritize accessibility and safety features to accommodate all guests. Materials chosen are durable and easy to maintain for long-term use.

Our Custom ADU Solutions
We focus on creating tailored structures that increase property value and meet specific needs. Our builds emphasize functionality, compliance, and design that fits the lifestyle of Huntington Beach homeowners.
Rental Unit Construction
We design rental units that comply with local zoning and building codes. Each unit maximizes space efficiency and provides essential amenities such as kitchens, bathrooms, and privacy features.
Our approach ensures easy tenant access while maintaining separate utilities where possible to simplify billing. Soundproofing and proper insulation are standard to enhance tenant comfort.
Detailed planning includes parking considerations and landscaping to keep harmony with the existing property. We manage permits and inspections to avoid costly delays.
In-Law Unit Additions
We create in-law units that offer independence while keeping family close. These units feature full living spaces with attention to accessibility, including wider doorways and zero-step entries when requested.
Our designs balance privacy and shared outdoor areas, catering to multiple generations under one roof. Kitchens, bathrooms, and living areas are customized to meet residents' needs.
All in-law units meet safety standards and local codes. We prioritize durable materials and efficient layouts to ensure longevity and ease of use.
Why Choose Us
We prioritize clear communication, thorough knowledge of local regulations, and a streamlined process from start to finish. Our approach ensures your garage conversion or ADU project meets all requirements and stays on schedule without unexpected costs.
Local Expertise
Our team is deeply familiar with Huntington Beach’s specific building codes and zoning laws related to garage-to-ADU conversions and residential remodels. We understand the nuances of setbacks, parking requirements, and permit processes that often delay projects. By staying current with city and county regulations, we help you avoid costly redesigns and ensure your project is compliant from day one.
Project Management
We handle every phase of your project, from initial design and permit acquisition to construction and final inspection. Our project managers coordinate with city officials, subcontractors, and inspectors to keep the process organized and efficient. You will receive regular updates and clear timelines, so you know exactly what to expect.
Transparent Pricing
We provide detailed, upfront estimates without hidden fees, helping you budget confidently. Our consultations involve a thorough assessment of your property’s condition, project goals, and potential challenges to offer realistic pricing. During the consultation, we outline your options and discuss how design choices impact cost and value. This transparency builds trust and ensures you fully understand the investment before work begins.
FAQS on Garage-to-Bedroom, Home Office, Guest Suite, Rental Unit, or In-Law Unit Conversion
We handle the entire garage conversion process, including navigating local requirements and ensuring your project complies with all necessary regulations. Understanding permit requirements is essential to avoid delays and fines.
How much does it cost to convert a garage into a bedroom in Huntington Beach?
In Huntington Beach, converting a garage into a bedroom typically costs between $15,000 to $40,000. Basic conversions with minimal plumbing start around $15,000, while more comprehensive conversions with full bathrooms, high-end finishes, and custom features can reach $40,000 or more. Costs vary based on the garage size, needed structural changes, and finish quality.
What's the ROI of converting my garage into a rental unit in Orange County?
A garage-to-rental unit conversion in Orange County typically offers a 70-80% ROI. With average monthly rental income of $1,200-$2,000 depending on size and amenities, most homeowners can recoup their investment within 2-3 years. The long-term rental income and property value increase make it financially beneficial, especially in areas with high housing demand like Orange County.
Does a garage conversion increase home value in Southern California?
Yes, garage conversions typically increase Southern California home values by 10-15% of the total home value, especially when done professionally with proper permits. The additional usable living space is highly valued in the competitive SoCal real estate market, though some buyers may value garage parking space. The positive impact is greatest when the conversion addresses a current market need (like rental housing).
How long does it take to convert a garage into a home office in Huntington Beach?
Converting a garage into a home office in Huntington Beach typically takes 4-8 weeks. This timeline includes:
- Permitting phase: 2-4 weeks
- Construction phase: 2-4 weeks Simpler conversions can be completed in as little as 3 weeks, while more complex projects with electrical upgrades, custom features, or supply chain delays may take 10-12 weeks.
What permits are required for garage conversions in Orange County?
Garage conversions in Orange County typically require:
- Building permit
- Electrical permit
- Plumbing permit (if adding bathroom/kitchenette)
- Mechanical permit (for HVAC)
- Zoning clearance
Requirements vary by specific city within Orange County. Most conversions need plans drawn by a licensed professional showing compliance with building codes, including egress requirements, insulation, and structural considerations. Some areas may have additional requirements for parking replacement or ADU-specific regulations.