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ADU Architect San Rafael

Building an ADU in San Rafael is one of the smartest ways to increase your property’s value and create a reliable rental income stream. The success of your project depends on working with the right architect who can keep you clear of costly delays, red tape, and unexpected roadblocks.

At Dwelling Lab, that’s exactly what we do. As licensed California architects, we specialize in ADUs and have guided many Marin County homeowners and investors through design, permitting, and construction oversight. With us, you get a complete, step-by-step process that takes your project from first sketch to final build, giving you peace of mind that your investment will pay off for years to come.

Schedule a Free Consultation

Our ADU Design & Permitting Process
in San Rafael

Turning an idea into a completed ADU in San Rafael requires a process built to move smoothly through city requirements. Dwelling Lab provides clear guidance at every stage:

Investigation & Planning
Site analysis, zoning research, and feasibility studies to confirm your lot qualifies for an ADU under San Rafael regulations.
Schematic Design
Custom layouts for detached units, attached additions, or garage conversions—balancing function, privacy, and design aesthetics.
Construction Drawings
detailed blueprints which include everything a builder needs to ensure your ADU is built exactly as it was designed, meeting all safety and code requirements.
Permitting & Approvals
We manage all submittals, coordinate with city planning departments, and reduce the back-and-forth that often slows projects down.
Construction Oversight
We collaborate with your selected contractor to ensure your ADU is built to spec, safeguarding both your design and your budget.

ADU Options for San Rafael Homeowners

Every San Rafael & Marin County property holds potential. We help homeowners identify the ADU type that best fits their goals, budget, and lot size:

  • Detached ADUs – Backyard cottages that offer privacy, long-term value, and strong rental demand.

  • Garage Conversions – Turn underused garages into fully livable apartments.

  • Partial Conversions & Additions – Expand your home by blending new square footage with existing layouts.
  • Junior ADUs (JADUs) – Compact units carved from existing space—affordable and typically faster to approve.

Fire-Resilient Design for San Rafael ADUs

San Rafael properties face unique challenges, that’s why safety and durability are part of every design we deliver:

  • Ember-resistant vents and eaves

  • Class-A roofing materials such as clay tile, metal, or slate

  • Non-combustible siding (stucco or fiber-cement)

  • Landscaping strategies that create defensible space
Our goal: build ADUs that stand strong and retain long-term value.

Why Work with Dwelling Lab in San Rafael?

Your property has untapped potential. Whether you’re adding space for family, planning a rental, or seeking long-term returns, we provide the expertise to make it happen:

  • Trusted Expertise
    Licensed California architects with a BuildZoom score in the top 5%.
  • Local Advantage
    In-depth knowledge of San Rafael & Marin County zoning codes, coastal regulations, and permitting processes.
  • Full-Service Approach
    From feasibility and design to city approvals and construction oversight, we manage it all.

    FAQ
    How long does it take to get an ADU permitted in San Rafael?

    Most projects take 2–6 months for permits, depending on design complexity and city review timelines.

    San Rafael ADUs must be at least 150 sq. ft. with a ceiling height of 7 ft, natural light, and proper exits.

    Conversions often begin around $100,000, while new detached units typically range from $300,000+. Final costs depend on lot conditions, materials, permitting fees, and contractor availability.

    Yes. We assess existing structures, bring them up to code, and guide you through the legalization process.

    We’re architects—our role is end-to-end design, permitting, and oversight. Beyond drawings, we add expertise in zoning, fire resilience, and project coordination.

    Let’s Design Your San Rafael ADU

    Your lot has more to offer than you think. Whether you want extra income, space for extended family, or a long-term property investment, Dwelling Lab can bring it to life.

    Schedule a Free Consultation