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B-436 ADU exterior in light colorway
B-436 ADU exterior in dark colorway
B-436 floor plan
Exterior:

B-Series · Single-Level

Model B-436 · Single-Level

About This Model

The B-436 is a single-level 1-bedroom. 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. It is the single-level cottage we build when a parent needs a zero-step home thirty steps away instead of a $12,000 to $15,000 a month care facility. The money stays in the property.

Ideal For

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

Interior Photo
B-436 interior

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

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Floor Plan / Elevation — B-436
Floor Plan
B-436 floor plan

Premium Finishes & Features

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Full Turnkey Construction & Residential Finishes
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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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Full Bathroom
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Lifetime Composition Shingle Roof
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Slow Close Cabinets and Drawers
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Appliance Packages Available

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, quartz countertops, luxury vinyl flooring, slow-close cabinetry, and a lifetime composition shingle roof. Appliance packages are available and are not assumed in the base price.
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.
B-436
B-Series · Single-Level
1Bed
1Bath
436sqft
ADU Overview
436 sqft 1-bedroom with wider living area. More elbow room in the kitchen and living zone without a larger footprint.
Check If This Fits Your Lot →
or call us directly
608-400-0121 VIEW ALL MODELS