Modern ADU Designs

Discover ADU Floor Plans Built for Real Living

Browse our most requested ADU layouts — from smart studio spaces to roomy two-story layouts. Every design is created to maximize comfort, functionality, and lasting value.

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Cottage Collection 1

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Cottage Collection 2

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Cottage Collection 3

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Mini Nest 1

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Mini Nest 2

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Mini Nest 3

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Nest Collection 1

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Nest Collection 2

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Nest Collection 3

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Retreat Collection 1

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Retreat Collection 2

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Retreat Collection 3

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Retreat Collection 4

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Studio Collection 1

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Studio Collection 2

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Studio Collection 3

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Villa Collection 1

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Villa Collection 2

Hear From Your Neighbors

Why Homeowners Choose Promodeling

With hundreds of completed ADU projects, Promodeling has earned a reputation as a trusted builder for homeowners across the Bay Area. Hear directly from clients about their experience working with our team.

Build Your Dream ADU With Promodeling

You’ve explored the possibilities — now see how Promodeling brings them to life with beautifully designed, fully code-compliant ADUs for homeowners.

Frequently Asked Questions About ADUs

An ADU (Accessory Dwelling Unit) is a secondary residential unit built on the same property as an existing home. It can be a detached backyard home, garage conversion, attached addition, or interior unit.

The cost depends on the size, design, site conditions, utility connections, and finishes selected. A consultation is the best way to get an accurate estimate based on your property and goals.

Project timelines vary depending on design complexity, permitting, and construction scope. Most ADU projects take several months from planning to completion.

Yes. ADUs typically require permits and must meet local zoning and building code requirements. Working with an experienced builder helps streamline this process.

In many cases, yes. Garage conversions are a popular option because they can make use of existing structures while creating functional living space.

Many homeowners use ADUs as long-term rental units, guest homes, or housing for family members. Local regulations may apply depending on your city or county.

ADUs are commonly used for rental income, multigenerational living, home offices, guest accommodations, or private living space for family members.

The best first step is to schedule a consultation. A builder can review your property, discuss your goals, and recommend the right ADU options for your space and budget.