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15 Modern DIY Garage Apartment Plans You Can Build

House with a garage

Whether you are looking for in-law accommodation, space for your teenage children, a guest room, office or studio, you’re probably already thinking about adding a garage apartment. And why not? It can be a great way to get the extra space you need, to earn some additional rental income, or just increase the value of your home.

Building a garage apartment isn’t cheap, but if you’re an experienced handyperson or a professional contractor, you could save yourself a bundle by doing it yourself.

Of course, the first step involved is coming up with a design and plans that are not only stylish but will also meet your needs. There are plenty of fantastic plans available on the internet – some better than others – and here are 15 of our favorites to get you started.

1. Westover Garage from William Lindy

Westover Garage from William Lindy

This modern three-car garage apartment by William Lindy has a timeless classic look. It would make the perfect addition to any classical-style house and add value in just about any situation. This loft apartment is all about space. It features a large double bedroom with a walk-in closet and separate bathroom. There is also an open plan living room and there’s still room for an island in the galley kitchen.

Footprint: Width: 42’4″

Depth: 24’0″

Living Area: 672 sq. ft.


2. Mahaffey Garage from William Lindy

Mahaffey Garage from William Lindy

The Mahaffey from William Lindy is a modern two-car garage with a classic high roof design and a spacious second-floor studio apartment. The apartment has a separate side entrance and is accessible via enclosed indoor stairs. It features a large open bedroom/studio, separate bathroom and a small galley kitchen that runs from the main room.

Footprint: Width: 23’0″

Depth: 25’6″

Living Area: 672 sq. ft.


3. Garage Apartment Plan 51521 from Family Home Plans

Garage Apartment Plan 51521 from Family Home Plans

This two-car garage apartment from Family Home Plans has a stylish and contemporary look.

It features a large one-bedroom apartment on the first floor, with a separate bathroom and an open living area and kitchen.

Footprint: Width: 25’0″

Depth: 30’0″

Living Area: 881 sq. ft.


4. Garage Apartment Plan from Family Home Plans

Garage Apartment Plan from Family Home Plans

This stylish garage apartment plan from Family Home Plans features a three-car garage with a large two-bedroom apartment above.  The apartment, which is accessed via outdoor stairs, has a spacious and practical design and full-size bedrooms, a bathroom, a separate kitchen and a large open plan living and dining space.

Footprint: Width: 38’0″

Depth: 26’0″

Living Area: 880 sq. ft.


5. Saltbox Style Garage Apartment from Family Home Plans

Saltbox Style Garage Apartment from Family Home Plans

A popular classic design, this modern saltbox style apartment garage from Family Home Plans includes a single garage with a separate office or workspace and an upstairs studio apartment.

The apartment has a separate internal staircase at the front of the building. The open loft apartment has a kitchen and separate bathroom, and it would make for an ideal guest room, office or studio space.

Footprint: Width: 20’4″

Depth: 40’8″

Living Area: 656 sq. ft.


6. Modern Garage Apartment from Garrell Associates

Modern Garage Apartment from Garrell Associates

This modern two-car apartment garage from Garrell Associates is almost a small house and, would be equally at home paired with a contemporary suburban house as it would be as a standalone holiday home on a rural or coastal block.

The upstairs one-bedroom apartment has a separate internal entry and spacious open design. There is a large outdoor deck that flows from the living area as well as a separate bathroom, a laundry and a large corner kitchen.

Footprint: Width: 23’0″

Depth: 30’0″

Living Area: 824 sq. ft.


7. Double Garage with Large Open Plan Loft from Garrell Associates

Double Garage with Large Open Plan Loft from Garrell Associates

Perfect as in-law accommodation or for rental income this double garage from Garrell Associates is just waiting for you to put your stamp on it.  With 812 square feet of living space, including two outdoor decks, this design simply radiates style and potential. You could easily configure this plan into a two-bedroom apartment with open plan living and a galley kitchen.

Footprint: Width: 24’0″

Depth: 40’0″

Living Area: 812 sq. ft.


8. Four Car Garage Apartment from Garrell Associates

Four Car Garage Apartment from Garrell Associates

If space is what you are after you should take a close look at this modern four-car garage apartment from Garrell Associates.  It has a massive 888 square-foot second-floor loft with a separate bathroom that could easily be configured into a multi-room apartment, used as a large home office/studio or left as it is for storage.

Footprint: Width: 40’0″

Depth: 30’0″

Living Area: 888 sq. ft.


9. Modern Cube Garage Apartment from Architectural Designs

Modern Cube Garage Apartment from Architectural Designs

The Cube Garage Apartment from Architectural Designs features a flat roof and striking cube shape that lends a modern air its minimalist design. All the living space is on the second floor, except the ground floor entry foyer. Upstairs, you’ll find a large double bedroom and bathroom to the rear, and an open plan living space with galley kitchen at the front.

Footprint: Width: 18’3″

Depth: 28’6″

Living Area:  572 sq. ft.


10. The Carriage House Garage from Architectural Designs

The Carriage House Garage from Architectural Designs

The Carriage House Garage from Architectural Plans has a small footprint and is bursting with style. It offers extraordinary versatility and features a contemporary loft apartment and single car garage.

The loft studio has a vaulted ceiling, built-in desk, and a kitchen with a pantry. It has been designed to ensure abundant natural lighting and maximize the open space.

Footprint: Width: 17’6″

Depth: 24’0″

Living Area: 336 sq. ft.


11. Contemporary Garage Apartment from Architectural Designs

Contemporary Garage Apartment from Architectural Designs

With windows across the front and side of the second floor, as well as a large wrap-around balcony, this contemporary garage apartment from Architectural Designs would be ideal as a home, guest accommodation or for rental income. There are two large bedrooms, a hall bathroom with double sinks, and a second full bathroom on the ground level, along with a huge storage closet.

Footprint: Width: 32’0″

Depth: 32’0″

Living Area: 1158 sq. ft.


12. Traditional One-Car Garage Apartment from Family Home Plans

Traditional One-Car Garage Apartment from Family Home Plans

This traditional single car garage apartment from Family Home Plans’ features a loft studio with 342 square feet of living space. The loft apartment has a separate entrance to the side of the garage, which leads to an internal enclosed stairwell.  This garage apartment has a pleasant classic look and may be suitable for a narrow block, or one where space is a premium.

Footprint: Width: 17’0″

Depth: 27’0″

Living Area: 342 sq. ft.


13. Simple & Stylish Two Car Garage Apartment from Architectural Designs

Simple & Stylish Two Car Garage Apartment from Architectural Designs

This two-car garage with a loft by Architectural Designs is oozing with charm, and would make a perfect guest room or in-law accommodation. It features a one-bedroom loft apartment with an open plan living and dining room, a kitchen, and a bathroom. Entry to the apartment is via a separate entrance and internal stairs at the front of the garage.

Footprint: Width: 28’0″

Depth: 26’0″

Living Area: 746 sq. ft.


14. Extra-Large Garage Apartment from House Plus Plans

Extra-Large Garage Apartment from House Plus Plans

This extra-large double garage apartment from House Plans Plus is another plan that is more of a house than a garage, and this one is large enough to accommodate a family.  The upstairs apartment has a large open plan living space with a soaring 12-foot ceiling, three large bedrooms, an island kitchen, and a separate laundry/utility room. There is also a large outdoor deck that is accessed via central glass doors from the main living area.

Footprint: Width: 25’0″

Depth: 60’0″

Living Area: 1400 sq. ft.


15. Stylish Garage with Loft Apartment from E-Plans

Stylish Garage with Loft Apartment from E-Plans

This stylish two-car garage from E-Plans has additional space on the second level for guests or in-laws. With 484 square feet of living space the upstairs one-bedroom apartment has a separate living and dining space, complete kitchen, and full bathroom. The bedroom features a box-bay window and closet, and the open plan living area has access to a covered outdoor deck. Access to the apartment is via a stairway to the left of the double garage.

Footprint: Width: 27’6″

Depth: 22’0″

Living Area:  484 sq. ft.


Featured image credit: House with a garage by Luis Yanez, Pexels

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