Small dwellings explored through lot fit, daily life and zoning boundaries.

Site #42 · Residential Architecture & Custom Builds

Illustrative concept

ADU Layouts / Zoning

Helps homeowners and small builders understand how zoning, setbacks and lot shape limit an accessory dwelling, and how to lay out a backyard cottage, garage apartment or basement suite that works for aging parents, grown kids or rental income.

aduzoningaccessory-dwelling

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The interactive studio · ADU Layouts / Zoning

ADU massing

Turn it around. Separate the layers. Explore a different finish.

Illustrative concept for ADU Layouts / Zoning

3D concept studio

Preparing interactive model…

zoning and lot feasibility

compact dwelling layouts

conversion versus new construction

The project collection

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Design software

SketchUp

Explore 3D modeling tools for layouts, buildings and site design.

Purpose: 3D building and layout modeling
Resources: 3D Warehouse models and materials

Full specifications & planning notes

Purpose: 3D building and layout modeling
Resources: 3D Warehouse models and materials
Training: SketchUp Campus tutorials

Source checked 2026-09-17

Before choosing: confirm the exact model, dimensions, compatibility, installation requirements and local availability with the provider. No stock or price is represented here.

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Planning resource

California ADU resources

Explore California's official ADU resources. For other locations, check your local planning authority.

Collection: Planning resource
Source: Official provider

Full specifications & planning notes

Product variants: See the provider for available models and exact specifications.

Source checked 2026-09-17

Before choosing: confirm the exact model, dimensions, compatibility, installation requirements and local availability with the provider. No stock or price is represented here.

Compare California ADU resourcesView at official source ↗

Building product

Andersen

Andersen 100 Series double-hung window

A Fibrex composite window with operable upper and lower sashes.

Useful forComparing window operation and frame material

Frame material: Fibrex composite
Operation: Upper and lower sashes open

Full specifications & planning notes

Frame material: Fibrex composite
Operation: Upper and lower sashes open
Ventilation: Top, bottom or both

Planning considerations

Confirm size availability, glazing package and performance for the quoted unit.
Egress, energy-code and installation requirements depend on the project.

Source checked 2026-09-18

Before choosing: confirm the exact model, dimensions, compatibility, installation requirements and local availability with the provider. No stock or price is represented here.

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Building product

Nudura

Nudura standard ICF form

A standard insulated concrete form with an 18-inch course height and 8-foot straight panels.

Useful forPlanning an insulated concrete wall system

Standard course height: 18 in / 457 mm
Straight panel length: 8 ft / 2.44 m

Full specifications & planning notes

Standard course height: 18 in / 457 mm
Straight panel length: 8 ft / 2.44 m
System: Insulated concrete forms

Planning considerations

Core size, reinforcement, bracing and concrete placement need a project-specific design.

Source checked 2026-09-17

Before choosing: confirm the exact model, dimensions, compatibility, installation requirements and local availability with the provider. No stock or price is represented here.

Compare Nudura standard ICF formView at official source ↗

Construction software

Bluebeam

Explore drawing review, PDF markup and construction collaboration tools.

Collection: Construction software
Source: Official provider

Full specifications & planning notes

Product variants: See the provider for available models and exact specifications.

Source checked 2026-09-17

Before choosing: confirm the exact model, dimensions, compatibility, installation requirements and local availability with the provider. No stock or price is represented here.

Compare BluebeamView at official source ↗

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Guides & ideas

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We’re preparing practical guides to adu layouts / zoning. In the meantime, explore the interactive model and official resources above, or tell us what you’re planning.

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ADU Layouts / Zoning

aduzoningaccessory-dwelling

A collection you can get your hands on.