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About This Model

The choice between the B-420 and B-436 usually comes down to lot constraints and priority. If you’re on a tighter lot where the footprint needs to be as small as possible, the B-420 is right. If you have the lot clearance, the B-436’s wider floor plate makes it feel more like a well-designed small home and less like a compact unit. For a family member moving in longer-term, the additional elbow room in the kitchen and living area is meaningful day to day.

Ideal For

Tenants or family members who want a more spacious feel without a larger structure footprint.

Interior Photo

Representative interior photo. Finishes and layout vary by model and project configuration.

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Floor Plan / Elevation — B-436

Floor Plan

Premium Finishes & Features

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Full Turnkey Construction & Finishes All Included

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Design and Plans Included

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Luxury Vinyl Flooring

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Quartz Countertops

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House Match Options Available

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Mini Split Heating and Air System

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Open Concept Kitchen

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Custom Built at Your Property

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French Front Entry Doors

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Full Bathroom

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Lifetime Composition Shingle Roof

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Slow Close Cabinets and Drawers

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All Appliances Included

Frequently Asked Questions

Where can I place this ADU?+

The B-436 can be placed on most single-family and two-family residential lots in Dane County, subject to setback, size, and zoning requirements for your municipality. We confirm feasibility at your address during the free feasibility check.

What can I customize?+

Exterior siding color and material, roofing color, interior paint, cabinet hardware, light fixtures, and appliance packages. The structural layout is fixed per model; finish-level personalization is fully available.

What features come standard?+

Every Boundless ADU includes full permitting, architectural plans, mini-split HVAC, all appliances, quartz countertops, luxury vinyl flooring, slow-close cabinetry, French entry doors, and a lifetime composition shingle roof.

What financing options are available?+

Common paths include HELOCs, cash-out refinancing, construction-to-permanent loans, and ADU-specific products. See our financing page or try the ADU calculator.

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