Design-led ADUs and conversions that maximize efficiency, flexibility, and long-term usability. We provide strategic layout planning and documentation that supports Bay Area permitting, circulation clarity, and future adaptability.

This service is ideal for clients planning:

ADUs or garage conversions
Basement or bonus space conversions
Projects requiring permitting coordination

What’s Included in ADU & Conversion Design:

Space planning and layout development
Design coordination for permitting
Integrated interior planning

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How to work with Us

Step 1

Free Discovery Call

This brief call helps determine whether William Adams Design is the right fit for your ADU project. We’ll review your goals, scope, timeline, and the level of design support needed before outlining next steps.

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Step 2

Design Consultation

This consultation focuses on how your lifestyle functions today and how it needs to evolve. We’ll review scope, priorities, and any architectural considerations to provide clarity on next steps and whether we’re the right partner to move forward.

In-Home Consult Virtual Consult

Effortless steps for exceptional outcomes

Scope & Constraints

We begin by evaluating the existing structure, site conditions, zoning considerations, and long-term goals for the space. This phase clarifies feasibility, identifies limitations, and establishes a strategic framework before design decisions are made.

Design Development

With parameters defined, we develop efficient layouts and integrated design solutions that maximize usable square footage while supporting flexibility, circulation, and long-term functionality.

Documentation & Coordination

Once the design direction is finalized, detailed drawings are prepared to support permitting and construction. We coordinate documentation to ensure clarity, compliance, and a smooth transition into execution.

Design Approval

We check and track every project item, sharing a comprehensive finish guide with contractors. Each item is inspected, and we swiftly handle any on-site surprises, from returns or replacements to quantity adjustments.

Construction Kick-off

Demolition and construction kick off 2-4 weeks before the most extended lead time items arrive. WAD visits the site during framing, electrical, and plumbing, and periodically during finishing and installation to ensure the design is executed per our planning.

Final Walkthrough

We team up with your general contractor for a thorough walkthrough to check installations, finishing materials, and fixtures.

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FAQs

How small can an ADU be?

Size minimums and maximums vary by municipality. Design must align with local code.

Can an ADU increase property value?

Well-designed ADUs often increase flexibility and potential rental income, contributing to long-term property value.

Do ADUs require permits?

In most cases, yes. Local zoning and building codes govern ADU development. Design documentation must align with these regulations.

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