Homeowner Advice

General tips and advice for homeowners covering maintenance, seasonal tips and everyday property care.

Garage Conversions: Your Questions Answered

16th September 2022

If your home is starting to feel a little too small, or as though it is not quite right for you, it might be time to make some changes. However, before you start browsing the property ads, it might be worth seeing how you can adapt the space that you have already, rather than going through the stress and expense of moving home. Garages are increasingly used for storing an excess of stuff rather than for keeping vehicles safe and dry, so if you are lucky enough to have a garage, a conversion could be a good place to start.

We take a look at some of the most frequently asked questions so that you can determine whether a garage conversion might be the right thing for you.

Planning permission

Planning permission puts a lot of people off from converting their garage. However, before you give up out of hand, it is worth checking with your Local Authority as not all conversions require permission. Whether or not you need permission depends on whether the conversion is classified as a Permitted Development, and whether you live in a listed home, a Conservation Area or an AONB (Area of Outstanding Natural Beauty). In general terms, you are more likely to need planning permission if you are converting a detached garage than if you are converting an integral one. Likewise, if you are significantly changing the appearance of the garage (e.g. raising the roof or adding large windows), permission is more likely to be required.

Assessing your existing structure

If you have a garage that is ripe for conversion, the first thing you need to do is look at the structural framework that you have got to work with. The cost and viability of the conversion will depend on the walls, foundations and floors; a builder or structural engineer will be able to tell you whether what you have got to work with is sufficient, or if you need to make improvements to the structure as part of the conversion. Your builder will be able to tell you whether you need to improve your foundations and will factor this into their quote.

Insulation

Even if your garage is structurally adequate for converting into a living space, it is unlikely that it will be as well insulated as the rest of your home. What’s more, in addition to making the extension comfortable for habitation, certain thermal regulations have to be met under building regulations. Insulation can be added to an existing garage by using insulated plasterboard which is fixed to timber battens. For single storey conversions, additional roof insulation will be needed too. Your builder will advise on appropriate insulation in terms of comfort, design, and cost as well as building regs.

Once you have the basics taken care of, you can start thinking about the exciting bits: the design and use of your new area. Follow us on Facebook or Twitter for more conversion inspiration, or get in touch with a trusted local builder to get a quote to transform your garage into a workable living space.

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Looking for more homeowner advice advice?

Find clear, practical answers to common homeowner advice questions, helping homeowners understand everyday issues, know what checks they can carry out safely, and when it is best to contact a qualified professional.

What home repairs should I never attempt myself?

Gas work - full stop. Any work on gas appliances must be done by a Gas Safe registered engineer by law. Structural changes like removing walls, altering roof timbers, or touching anything load-bearing need professional assessment and often Building Regulations sign-off. Electrical work involving the consumer unit or new circuits must meet Part P. And if your property was built before 2000, be aware asbestos may be present - it can only be handled by a licensed specialist.
Which home improvements add the most value to a property?

Improvements that add usable space or modernise the rooms buyers scrutinise most tend to deliver the strongest returns. Loft conversions consistently top the list - adding a bedroom and bathroom can add more value than the work costs in many areas. Kitchen and bathroom updates are next. Open-plan ground-floor extensions connecting to a kitchen-diner have become one of the most sought-after layouts in UK family homes. And energy improvements - insulation, a new boiler, solar panels - are increasingly influencing buyer decisions as running costs become a bigger part of the conversation.
Should I renovate my home or move house?

There's no universal right answer - it depends on your situation. Moving gets you what you want without living through a building site, but stamp duty, estate agent fees, and moving costs can easily add up to tens of thousands of pounds. Renovating lets you stay put and invest in your own property, but comes with disruption and unexpected costs. The most useful comparison: get a clear view of what your home could realistically be worth after the work, and what a move would actually cost end to end. A local estate agent and a builder's quote can give you those two numbers.
What does a home survey actually cover and do I need one when buying?

A survey is an independent assessment of a property's condition carried out by a qualified surveyor - separate from the mortgage valuation, which only tells the lender what the property is worth, not what's wrong with it. A HomeBuyer Report flags visible defects and anything that needs further investigation. A Full Building Survey goes deeper and is worth the extra cost on older, larger, or unusual properties. Given that a house is likely the biggest purchase you'll ever make, skipping the survey to save a few hundred pounds is a false economy - a single missed issue can cost far more to put right.
What should I do before starting any major home improvement project?

Get your paperwork in order before anyone picks up a tool. Check whether you need planning permission or Building Regulations approval. Find out whether a Party Wall Agreement applies. Confirm your home insurance covers you during the works. Get at least three written quotes and make sure the scope of work is clearly agreed in writing with whoever you hire. And have a contingency budget - on almost any renovation, something unexpected comes up. The projects that go smoothly are usually the ones that were properly planned before they started.
What is the difference between freehold and leasehold and why does it matter for home improvements?

If you own the freehold, you own the property and the land it sits on outright - you can generally do what you like subject to planning rules. If you own a leasehold property (common with flats), you own the right to live there for the remaining lease term, but the freeholder owns the building. This matters for home improvements because many leases require you to get the freeholder's written permission before making alterations - sometimes even internal ones. Always check your lease before starting any work, as doing alterations without the required consent can cause problems when you come to sell.

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