17 garage conversion design ideas

Be inspired by these space-enhancing garage conversion projects and design ideas, and find out how to achieve something similar

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Looking for design ideas for your garage conversion? Making it look like a natural part of your home, and less like a converted garage, is vital for its success and your home’s future saleability. Before work starts, commission scaled drawings of the finished project, indoors and out, and include details such as power sockets and furniture layout. 

Find tons of design advice, inspiration and garage conversion ideas below – and for step-by-step practical information, check out our expert guide to planning a garage conversion.

1. Create a multi-purpose space

The integral garage of this house was used for storage rather than the car, and the owners wanted to add a home office as well as utility room and downstairs toilet and shower area to their home. 

Architect Your Home used the full width and depth of the original structure for the utility, then extended it towards the garden to make space for the toilet/shower room and the home office at the rear to give it windows with an outlook over the garden. Insulation was essential, but there weren’t any other issues to be tackled because the garage was integral. It cost £42,000.

A multi-purpose garage conversion looking over a garden by Architect Your Home

(Image: © Architect Your Home)

2. Create a new kitchen diner

Emma and Ian Fisher wanted a larger kitchen diner so, instead of extending their house, they converted their integral garage, using the new space to enlargen their existing kitchen, and creating a utility, cloakroom and dining space, too. The project cost around £48,500 in total – see the complete project

3. Replace garage doors with consistent architecture

Ensure the brickwork, materials and windows replacing the garage doors match well with the existing house. Ask builders to fully tooth and bond the new brickwork into the old.

Often, the top of the garage door is lower in height than the other doors and windows on the ground floor. Consider whether you will be able to match the brickwork or external materials if the garage door opening requires reducing in size. In this case, you can choose to go for an architectural contrast, such as below. 

Find out more about transforming the exterior of your home to get the finish just right.

a conversion of a integral garage

(Image: © Berry Construction)

Swapping a one-car integral garage (above and below) for a double guest bedroom with en suite plus a utility room was the goal for the owners of this home. Berry Construction located the utility and storage area at the rear, and the bedroom and bathroom at the front. 

Fitting everything into the relatively small area needed careful planning. The lack of natural light was also a consideration, so a large window was fitted at the front of the house and the decoration was kept light and neutral. Specialist floor insulation meant that the level was consistent with the remainder of the ground floor. It cost around £37,000.

Garage conversion bedroom by Berry Construction

(Image: © Berry Construction)

4. Position the interior door correctly

Design the position of the interior door to the new room in the right place. ‘It’s best to consider what the ideal position would be, rather than going with the existing door if there is one,’ says Nigel Lewis. Work out how the door’s position will affect the furnishing of the new room – it’s no use positioning it in an ideal place in the hallway if it makes the new room awkward.'

Blue hallway by Farrow & Ball

(Image: © Farrow & Ball)

5. Create a double storey space

A larger than average single car garage attached to the house by a wall at the front with good ceiling height provided great potential for conversion. Aquila Property Group created a galleried sleeping area at the top of the space. Beneath, there’s a kitchen as well as dining space, living area and shower room. 

The build was without complications. The roof of the garage was changed, sound insulation was added to the walls, and a steel beam protects the integrity of the roof and houses the galleried bedroom. The floor was dug down to create extra head height and it was replaced with a concrete slab with underfloor heating. It cost around £55,000.

Bedroom in an attic space of a garage conversion by Aquila Property Group

(Image: © Aquila Property Group)

6. Get natural daylight into your garage conversion

If you can fit in extra windows to make the new space feel more like a room and less like a conversion, do so. If the garage faces the garden, replacing one wall with floor-to-ceiling windows or folding-sliding doors will make it feel wider and much more spacious, but do consider how this will restrict the layout of the room.

a garage converted into a bedroom with Ikea furniture

(Image: © Ikea)

7. Pay attention to your room's proportions

The cheapest way to visually change the proportions of the room is by using paint colours that make it feel bigger and brighter. Keep windows uncluttered, and hang mirrors to reflect light and stretch the space visually. Shop for furniture that matches the room’s proportions; if it’s too big, the room will feel cluttered. Invest in good storage, too.

However, because garage conversions tend to produce long, thin rooms, you might choose to take more drastic measures to create a room with more pleasing proportions. One way is to fit deep storage cupboards or a shower room along the narrowest inner wall; the other way is to create a cloakroom at that end of the room, accessible only from the hallway.

Venn Street

(Image: © Proctor & Co. Architecture Ltd.)

8. Create a connection to the garden

If your garage adjoins your kitchen, knocking through into the space to create a bigger, brighter kitchen-diner will give the best results in terms of usefulness and financial investment. If you do this, be prepared to plan very carefully to get the design details right. It’s vital that the new room doesn’t have the feel of a boxy converted garage. 

‘For this project (below), the owners wanted a stylish and functional kitchen and to open up the existing space to the outside area,’ says Lucy Eckersley.

‘To bring in light, we replaced the steel lift-up garage door with glazed folding-sliding doors’.

In designing the kitchen, the main problems were making the room feel cosy and welcoming, plus the limited space available, as the owners wanted to include a table, chairs, and a feature breakfast bar.

Find out more about designing the perfect kitchen in our guide.

garage conversion kitchen diner before

The original garage was a typical cluttered storage space, but the owners felt they could make better use of the room

‘They chose the Avant black and white kitchen from Second Nature, adding colour with a vivid green splashback and bar stools. Corian worktops have been shaped to fit the curved units. The build and kitchen together cost £24,000.’

garage conversion kitchen diner

As the garage was situated at the rear of the house, it was simple to create a small courtyard area in place of the drive


When a garage adjoins a kitchen or hallway, it will be very useful as a utility room. Use it for everything from laundry to extra storage and, if possible, squeeze in a downstairs cloakroom, too. Depending on your needs, you might even be able to devote half of a large garage to utility and leave the other half for a car. Or, you could split the room to create half utility, half playroom, for example. For a utility, underfloor heating will be useful for keeping the room warm and dry, while good ventilation is also a must. 

Read more about planning and designing a utility room

Utility room by Schüller

(Image: © Schüller)

10. Convert a garage into a home office

A home office is best sited away from the main living space if you have a family who will want the TV on while you try to work. If, however, it doubles up as a homework space, having it near to where you’ll be most of the time can be very useful. It will need plenty of natural daylight to make it welcoming during the day, but invest in good blinds if it is south-facing, and ensure the heating is sufficient. 

 The artist owner of this 1970s Surrey bungalow (below) bought the dated home with improving in mind. Bliss Interiors undertook the total transformation of the property and, as part of the work, the garage was converted to create a light-filled studio. A door was added in the kitchen of the house to link the new space to the rest of the home. Storage was retained at the front of the new room, which features doors that can be opened to let in both air and light. Generous views and access to the garden were created at the back of the new living space. It cost £75,000.

Garage converted into a home office seen from the exterior by Bliss Interiors

(Image: © Bliss Interiors)

Wireless networking may need additional equipment to boost the signal to reach detached garages, depending on the distance from the house. Also remember that home offices may be liable for business rates – find out from your local valuation office. A similar conversion would cost around £8,000 to £10,000.

Find out how to design a home office in our expert guide.

11. Convert a garage into a playroom

For a garage off a kitchen-diner or living space, this is the perfect use for families with young children. Include a TV, too, to help keep your living room much more of an adult space. Good daylight, ventilation and lots of practical storage will all be must-haves. Bear in mind that children grow up very quickly, so when you’re converting for this purpose, think five or 10 years ahead to how you might use the room, then, too. For example, a teenage den will keep your living room just for you. 

‘The original garage (below) wasn’t used very much by the owners, so they asked the architects to create a useful space the whole family could enjoy,’ says Jude Tugman of Architect Your Home. ‘The garage doors were replaced with two windows in keeping with the period of the house, and the new room is accessed from the main hallway, just inside the front door.

‘Inside, a mezzanine level was created to house a sleeping/lounging area. Beneath, built-in cupboards hide away the room’s clutter – and even house a space for a sink and kettle. Sofas and a TV finish the room off perfectly. The work cost around £40,000.’

Check out these playroom design ideas for inspiration.

garage conversion play room

The perfect place for family relaxation, this lounge area with mezzanine has been added seamlessly to the existing layout

12. Design a home cinema room

Perfect for partially converted garages, cinema rooms can be converted without the need for windows, although sound-proofing will need to be good. Future-proof the room by installing a window anyway and fitting good blackout blinds. 

Home cinema and games room

(Image: © Coleccion Alexandra UK)

13. Convert a garage into a bedroom

With a small garage off a living space or hallway, converting it into a spare bedroom for guests will be a good idea, but the room will be much more practical if you swap a conventional bed for a wall bed or sofa bed and fit in a desk or exercise space to double the functionality. The downside to a downstairs guest bedroom might be lack of access to a toilet or shower room. So, if there is enough room, squeeze in a space-saving wet room

'We halved our large garage and now use the rear part as a spare bedroom,’ explains Ben Rousseau of the room below. ‘The bedroom was created with a new blockwork wall and insulation, and by cutting light wells into the patio above to bring in light – although the front of the garage is ground-floor level, the rear space is below ground.

'We can’t watch films very loudly in our living room as it’s below our daughter’s bedroom, so we decided to combine the new bedroom with a cinema room, and it now features a fantastic 3D screen and surround sound speaker system.'

Stylish garage conversion before

‘To make space for an en suite to the new room, we moved back a ground-floor toilet, situated off the hallway, and knocked down the wall of the utility, which has become the en suite and the bedroom entrance. The work cost around £15,000 in total.’

Read our guide to designing a bedroom to get your project just right.

garage conversion spare room

Plenty of off-road parking made the garage, integral to Ben’s home, redundant. Some careful planning and a simple garage conversion have transformed the space into a combined home cinema and spare bedroom

14. Convert a garage into a living space

If your family is growing (or growing up), you’ll begin to need extra living space to cater to everyone’s tastes and needs. A converted garage that your kids can use – whether for gaming, relaxing or entertaining their friends – will be invaluable. Kit it out with plenty of slouchy seating (sofa beds will be particularly useful) and a flatscreen TV to create a versatile space that they’ll gravitate towards. The downside? The older children become, the noisier they get, so ensure that the sound-proofing is up to the job.

‘The garage conversion to this Edwardian property (below) was planned as part of wider project to reinvent and extend the house so the owners could have more space,’ says architect Ben Parsons.

double garage conversion before

‘The original garage was converted into a playroom, with a connection to the rear (south-facing) family room. A new garage was then built on to the side of this new room, with a new first-floor extension above.

‘We designed the new frontage so that it would blend in as seamlessly as possible with the house and complement the original composition and materials. The whole project cost around £180,000, with the garage conversion itself costing around £20,000.’

Find out how to design a living space to get your conversion room how you want it.

House with double garage conversion

This extensive remodelling project includes both a garage conversion and a first-floor extension. The transformation is impressive, helped by the matching of new roofing and brickwork to the existing materials

Thorne Wyness Architects transformed the under-used attached garage of this home (below), located in the south of the Isle of Mull, into a self-contained apartment, including a living space that makes the most of the amazing view. The garage wasn’t accessible from the main house, and the separation of the two was maintained when it was converted. 

The work required the replacement of the truss in the garage with a ridge beam. The main challenge for the architects was ensuring that the conversion didn’t feel mean while complying with the building regulations, and fitting in all that was required. It cost £45,000.

Garage conversion living room with lovely view by Isle of Mull Cottages

(Image: © Isle of Mull Cottages)

15. Build a home gym

Ideal for a room that leads off a hallway or kitchen, a home gym will need to be fitted with air conditioning or a window that can be opened to keep it fresh. Add a flatscreen TV and mirrors to make it feel like a real gym, and devote the back of the room to a shower space. 

Read more about how to build a home gym in our guide.

a home gym in a garage

(Image: © motive8)

16. Build an annexe for guests

Converting a garage into an annexe is best suited to an unattached, probably double, garage because it will give both you and the occupant – whether an ageing relative or regular guests – privacy and space. Depending on your arrangements, you will have to fit in a shower, possibly a laundry room and kitchen, plus a generous bedroom/living space. The room will need lots of natural light, and you should consider how it will be joined, if at all, to the rest of the house. At the very least, you might want a covered walkway between the two buildings. 

(Image: © Jeremy Phillips)

17. Create a music room

Mhairi and Andrew Hindle decided to convert the integral garage of their south-west London townhouse to add extra living space that’s a place to keep musical instruments and enjoy music lessons. They also wanted to make the rest of the house warmer by sealing the garage, insulating the internal walls, and adding underfloor heating to the room. Building in storage was also on their wishlist. 

Building, carpentry and design specialists Tiptoe – where Mhairi is a designer – undertook the project, which also involved raising the garage floor to the same level as the utility and bathroom that are also located on this floor of the house. It cost £10,000.

Garage conversion turned into a music room by Tiptoe

(Image: © Tiptoe)

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Aluminium bi-fold doors and a new rooflight help bring light into the kitchen-diner and create a link to the garden

Aluminium bi-fold doors and a new rooflight help bring light into the kitchen-diner and create a link to the garden

Aluminium bi-fold doors and a new rooflight help bring light into the kitchen-diner and create a link to the garden