Planning Permission and Building Regulations
Do I need planning permission to convert my garage?
Usually not, if the work is internal and the building isn't made bigger. There are exceptions, though. Your original planning permission may require the garage to stay available for parking, and extra rules can apply to listed buildings, conservation areas, flats and some newer estates. Our Newcastle planning and building control guide explains how to check.
Do I need building regulations approval?
Normally, yes. Converting a garage, or part of one, into living space will normally need building regulations approval, even if you don't need planning permission. It covers areas such as structure, insulation, damp, ventilation, fire safety and electrics.
Does replacing the garage door with a window affect planning?
It can. Many homeowners can make this change without applying, but it does alter the outside of the house. Check the position if you live in a conservation area, or if your home has design conditions.
Can I turn my garage into a separate home?
Don't assume so. Creating a separate dwelling is likely to need planning permission, even when the building stays the same size. Talk to the local planning authority about your plans first.
What happens if I don't get approval?
You could face enforcement action or be asked to put the work right, and you may have problems when you sell. Buyers' solicitors will ask for your completion certificate, so it's much easier to get approval at the start.
Costs and Value
How much does a garage conversion cost?
UK guides commonly quote between £7,000 and £32,000, depending on the garage and the room. These are published estimates, not our prices. Our garage conversion cost guide shows how the figures break down.
Is it cheaper than building an extension?
Usually, as the foundations, walls and roof are already there. An extension may be better if you need more space than the garage can provide, or if you want to keep the garage.
Will a garage conversion add value to my home?
It can, especially if it adds a useful bedroom or family room. The effect depends on your local market and whether the home still has enough parking. A local estate agent can give you a realistic idea.
What should a written quote include?
It should list the building work, electrics, plumbing, finishes, waste removal, approvals and inspections, and it should be clear about what is excluded. Ask how any extra work would be priced.
Is My Garage Suitable?
Can every garage be converted?
Most integral and attached garages can, and many detached ones too. Size isn't the only factor. The structure, floor, roof, damp protection and access all need looking at.
Is a single garage big enough for a bedroom?
Usually. A typical single garage is around 16 to 18 square metres, although you will lose some space to insulation and wall linings. Always plan using the finished measurements. Our garage to bedroom page has more on layouts.
Why is my garage floor lower than the house?
Many garage floors sit below the house, and they often slope towards the door so water can drain out. An insulated floor can help to bring the level up, but check that it leaves enough ceiling height.
Is there a problem if there's a room above the garage?
Not usually, but the ceiling between the two needs checking for fire protection and insulation. This is common in integral garages.
Can I convert a detached garage?
Often, yes. It usually costs more because electricity, heating, water and drainage must be brought across from the house. How you plan to use the room may also affect the planning position.
Layout and Storage
Can I keep some of the garage for storage?
Yes. A partial garage conversion creates a new room and keeps part of the garage for storage. In most cases, there won't be room left for a car.
Where will the storage from my garage go?
Before you commit, list what's in there and decide what could go in a shed, in the loft or to the tip. Many people find that they use only a small part of what they have been storing.
Can I add a bathroom or kitchen?
Yes, if there is space and a practical drainage route. Water and waste connections are often the deciding factor, and they add to the cost. See our garage to kitchen page for more detail.
During the Project
How long does a garage conversion take?
A simple single garage can often be finished in a few weeks, but a knock-through, new drainage or a bathroom will take longer. Allow extra time for drawings and approvals before work starts.
Can I stay at home during the work?
Yes, most people do. Expect some noise and dust, especially when the wall to the house is opened up. It helps to clear the garage and the driveway in advance.
Do I need to tell my neighbours?
It's a good courtesy, and it may be a legal requirement. If the work affects a wall you share with a neighbour, the Party Wall Act may apply, and you may need to give them written notice before you start.
Should I tell my home insurer?
Yes. Tell your insurer before work begins and again when it's finished, as the changes can affect your cover. Keep your completion certificate to hand.
What happens after I send an enquiry?
We review your details and reply to discuss the next step. You can read about each stage on our process page.