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A detached modern accessory dwelling unit (ADU) in a backyard

ADUs & additions

Serving homes and businesses across California

What's included

Backyard units, garage conversions and room additions, from plans to final inspection. MSH Development builds adus & additions projects across California, with a free on-site estimate within 48 hours.

Backyard ADUs, garage conversions and room additions managed from plans and permits through construction and final inspection.

Detached ADUs and guest houses
Garage conversions
Room additions
Plans, permits and inspections

Gallery

ADUs & additions
gallery

A detached modern accessory dwelling unit (ADU) in a backyard

The interior of a small modern ADU living area with a compact kitchenette along one wall in white cabinets with a quartz counter and a small sink

The exterior of a garage converted into an ADU

A small ADU bedroom with a neatly made bed in white linens, a light oak floor, white walls

A compact ADU bathroom with a frameless glass walk-in shower with white tile

A two-story detached garage with an ADU living space above

A small backyard cottage ADU in a modern farmhouse style with white board-and-batten siding

A wide backyard view showing a new detached ADU next to the main stucco house

An open-plan ADU interior with a vaulted ceiling with a white-painted wood beam

A small entry patio in front of a detached ADU, light gray and tan interlocking pavers

A small detached backyard ADU with white stucco walls

The interior of a compact ADU with a small modern kitchen along one wall with white shaker cabinets

A detached ADU with a covered entry patio under a simple wood-beam roof extension

A small ADU bathroom with a walk-in shower with a frameless glass panel and green zellige-style wall tile

More residential services

All residential remodeling services · See residential projects · Service areas

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adus & additions?

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