MBS-ADU-800ADU

The Tandem

A complete home above a garage built for two.

A two-bedroom, one-bath ADU above a tandem two-car garage, with a private exterior stair, a full kitchen and upstairs laundry.

Sq ft

800

Beds

2

Baths

1

Stories

2

The Tandem, MBS-ADU-800, alley-facing two-bedroom apartment above a tandem garage with off-white siding, a brick-look base and timber side stair

The home

The Tandem at a glance

The Tandem makes a deeper lot work harder. Its upper apartment brings together open living, four-place dining and a complete kitchen, with two queen bedrooms at the quiet end of the plan. A stacked laundry pair and separate linen storage sit beside the bathroom. Below, two cars park in line, leaving space for a courtyard-end workbench, storage and a separate service room. A timber stair provides an independent apartment entrance. Warm off-white siding, a brick-look base and wood accents give the alley-facing exterior its character. Tandem parking requires moving the alley-side car before the inner car can leave; final vehicle fit and lot placement are developed for the site.

  • Two queen bedrooms and one full bathroom
  • Approximately 800 sq ft gross apartment above a separate garage
  • Tandem two-car parking, storage and a workbench
  • Private exterior stair and apartment entrance
  • Complete kitchen and four-place dining
  • Stacked laundry and separate linen storage
  • Warm off-white siding, brick-look base and wood accents
Specifications
Model codeMBS-ADU-800
TypeADU
Bedrooms2
Bathrooms1 full
Stories2
Gross upper residence area800 sq ft
Footprint17 ft × 47 ft 1 in
Get a fixed price for The Tandem

Fixed factory price, valid 30 days

How it's built

The Tandem, built with panelized construction

MBS builds The Tandem from factory-made wall panels, floor cassettes and roof panels, CNC-cut in our St. Louis plant to the approved drawings. Panels ship flat and are set on a conventional foundation. The finished ADU is wood framing, not a modular box or a manufactured home, with a 50% quicker construction schedule.

  • Pick your package

    Framing only, open or sheathed panels, or closed panels with windows, cladding and MEP rough-in.

  • Keep your crew

    Your framer sets the panels, or MBS coordinates installation with your GC.

  • Fixed price, standard trucks

    A fixed factory price, valid 30 days, with freight included within 1,000 miles of St. Louis.

Renderings

Inside and out

Exterior

Front exterior
Courtyard exterior and apartment stair

Interior

Living spaces

Living room

Kitchen and dining

Kitchen
Dining

Bedrooms

Bedroom 1
Bedroom 2

Bathrooms

Bathroom

Laundry, storage and utility

Laundry and linen storage

Garage

Tandem garage and workspace

Concept renderings. Furniture, materials and finishes are illustrative.

Floor plans

Plans and furnished 3D models

Ground floor

Tandem garage

Floor plan
Furnished 3D model

Upper floor

Two-bedroom apartment

Floor plan
Furnished 3D model

Approximately 800 sq ft gross upper residence, including walls. The separate garage and exterior stair are additional. The 17 × 47 ft 1 in building envelope increases to about 21 ft 6 in across the exterior stair, before finishes and site setbacks. Concept areas are not certified net living or appraisal areas.

Price this plan

Build The Tandem on your lot

Send your site address and timeline. We return a fixed factory price, valid for 30 days, with freight included within 1,000 miles.

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