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ADU Garage Conversion in San Diego

Transform your San Diego garage into a valuable living space with expert drafting for permits and code compliance.

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View Our Custom Garage Conversions

Explore our team’s portfolio of ADU conversion drafts that helped San Diego homeowners maximize their property potential.

  • 1,110 sf
  • 2 beds
  • 2 baths
ADU Garage Conversion in Louisiana
Detached ADU

ADU Garage Conversion in Louisiana

  • 1,232 sf
  • 2 Beds
  • 2 Baths
ADU New Construction in Rosehill
Detached ADU

ADU New Construction in Rosehill

  • 425 sf
  • 1 Bed
  • 1 Bath
ADU New Construction in Saratoga
Attached ADU

ADU New Construction in Saratoga

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Get started with our professional drafting services and permits in San Diego today!

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About

Our Garage Conversion Company

Looking to maximize your space without the hassle of moving? Transform your underused garage into a stylish, functional living area — whether it’s a guest suite, home office, or personal retreat, we make the process seamless and stress-free. At Streamline Design & Permitting, our extensive experience, combined with our passion for customer service, makes us the top choice for this type of project.

Our team specializes in creating detailed draft plans, getting building permits, and code compliance. We also provide comprehensive investment guidance, from ROI calculations for ADUs to cost estimations for construction and property planning.

Once your plans are approved, we connect you with trusted contractors to bring your garage conversion vision to life.

Bringing Designs to Life: Suggested Builders

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Our Garage-to-ADU Conversion Services

We provide comprehensive garage conversion services in San Diego, from full garage-to-ADU transformations to partial conversions. We also offer expansions, second-story additions, and detached ADU designs.

Your garage has endless potential for extra living space or a dedicated work area, and we’re here to help you tap into this potential. We provide tailored solutions that maximize functionality and comfort.

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Turn Your Garage into a Living Space

  • Guest house / ADU: A private, self-contained unit with a bedroom, bathroom, kitchenette, and separate entrance.
  • Studio apartment: A flexible, open-concept design with storage, compact appliances, and multi-use furniture.
  • Family room extension: A cozy entertainment area with seamless indoor-outdoor flow, climate control, and built-in storage.

Create a Productive Work Environment

  • Home office: A quiet, professional workspace with ergonomic design, ample lighting, and soundproofing.
  • Creative studio: A bright, inspiring environment with specialized storage, durable surfaces, and ventilation for artistic work.
  • Workshop: A fully equipped DIY or hobby space with heavy-duty workbenches, tool organization, and safety features.

Garage Conversions for Business Use

  • Retail space: A boutique storefront, pop-up shop, or showroom with an inviting layout and optimized customer flow.
  • Restaurant or café: A small dining space, bakery, or coffee shop with custom kitchen layouts and compliance-ready designs.
  • Commercial office: A functional work hub with dedicated meeting areas, storage, and an efficient workspace.

Benefits of a Garage Conversion

You might be wondering if this process is worth it. Converting your garage into an ADU offers multiple advantages beyond gaining extra space. Here’s how our professional drafting services at Streamline Design help you maximize these benefits:

  • Expanded Living Space

    Make the most of every square foot in San Diego by transforming your underutilized garage into valuable living space. Our drafting plans incorporate thoughtful design elements like built-in storage solutions that maximize functionality while maintaining aesthetic appeal.

  • Increased Property Value

    A professionally designed garage conversion significantly enhances your property's market value. Our permit-ready plans ensure the new space integrates seamlessly with your existing home, creating a cohesive look that appeals to future buyers.

  • Rental Income Potential

    Convert your garage into a legal ADU and create a new revenue stream. This is an easy and stress-free way to make extra money. Our code-compliant drafting packages help you navigate regulations efficiently, positioning you to generate consistent monthly income from your property investment.

Thinking of Converting Your Garage into an ADU in San Diego?

Take the first step toward maximizing your property value and creating additional living space by scheduling your consultation today.

Book a Free Consultation

Garage Conversion to ADU Regulations in San Diego

To convert a garage into an ADU in San Diego, you'll need to comply with specific municipal regulations. Here are the key requirements:

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Size and Dimensions

  • Minimum size: 150 square feet
  • Maximum size: 1,200 square feet (or 50 percent of primary dwelling, whichever is less)
  • Minimum ceiling height: 7 feet

Building Requirements

  • Separate entrance required
  • At least one bathroom with a toilet, sink, and shower/bath
  • Efficiency kitchen (sink, refrigeration, counter space, and cooking appliance)
  • Minimum of one window per habitable room
  • Smoke and carbon monoxide detectors

Zoning Considerations

  • No off-street parking required if within 1/2 mile of public transit
  • Setbacks: 4 feet minimum from side and rear property lines
  • Can be attached to a primary residence or freestanding
  • Only one ADU permitted per single-family residential lot

Permitting Process

  • Building permit required
  • A licensed professional must draft the plans
  • Compliance with the California Building Code
  • Separate utility connections may be required

Don’t stress about these regulations. Our expertise in San Diego's specific regulations ensures your garage conversion plans will conform with the permitting process efficiently and meet all city requirements.

Ready to Transform Your Garage on Paper?

Get started with our professional drafting services and permits in San Diego today!

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Process

Our Streamlined Process: Expert Plans & Permitting Made Simple

At Streamline Design & Permitting, we specialize in delivering precise draft plans and securing building permits with full code compliance, ensuring a smooth and efficient start to your garage conversion.

  • 01

    Concept & Planning

    We transform your vision into detailed, compliant architectural plans.

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  • 02

    Code & Zoning Analysis

    Our experts ensure your project meets all local regulations.

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  • 03

    Drafting & Design

    We create optimized layouts that maximize space and functionality.

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  • 04

    Permit application & approval

    We handle the paperwork, submissions, and agency coordination.

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  • 05

    Contract Completion

    Clear agreements keep your project on track from start to finish.

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Why Us

Why Choose Us? Expertise You Can Rely On

Clients trust us because we offer:

  • Creative Problem-Solving

    Where others see roadblocks, we find creative and legal workarounds to keep your project moving forward productively.

  • On-Time Service

    Our streamlined process ensures accurate plans and timely permit approvals, so you can transition smoothly to construction.

  • Cost-Efficient Planning

    We optimize designs to minimize unnecessary expenses while ensuring high-quality, compliant solutions.

  • Experienced Team

    With 25+ years of industry experience, our San Diego drafters bring deep knowledge of building codes, zoning laws, and permit processes to every project.

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Ready to Start Your Garage Conversion with Our Drafting Company?

Get expert drafting and hassle-free permit approval to bring your vision to life — start your project with us today!

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FAQ

FAQ on Garage Conversions

  • 01

    Is a garage conversion worth it?

    Yes, garage conversions are typically worth the investment in San Diego’s competitive real estate market. Converting your garage into an ADU can provide additional living space, increase your property value by 20-30 percent, and potentially generate rental income of $1,500-2,500 monthly. The return on investment is especially strong considering San Diego's streamlined ADU regulations and ongoing housing shortage.

  • 02

    How much does a garage conversion cost?

    In San Diego, garage-to-ADU conversion costs typically range from $100-200 per square foot, with total projects averaging between $80,000 and $150,000 depending on complexity. Our drafting and permitting services are competitively priced at approximately 3-4% of the total construction project cost, below the industry average, ensuring you receive professional, permit-ready plans without overpaying.

  • 03

    How long does a garage conversion take?

    The garage conversion process typically takes 10 to 12 months, with the most critical phase being the design and planning stage, which we complete in at least 4 months. This stage includes drafting detailed plans, obtaining approvals, and ensuring compliance with regulations. A well-prepared design speeds up the construction process and helps avoid expensive delays.

  • 04

    Can you convert a garage into a living space?

    Yes, absolutely. A garage can be converted into a living space with proper planning, permits, and construction. Our team ensures a seamless process without delays, keeping you informed every step of the way. 

  • 05

    How much is a garage conversion permit in San Diego?

    In San Diego, a building permit for a garage conversion typically costs between $3,000 and $4,000, depending on the project's scope. Additional fees may apply for electrical, plumbing, and plan review, which can range from a few hundred to several thousand dollars. We’ll provide you with more information on cost once we know the project-specific requirements.