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  • Neil Harrison

That cluttered garage can become a stylish, valuable home extension, offering vital extra living ...

Updated: Jun 24, 2023

Next year may well be something of a bumper year for home extensions of all kinds, as BREXIT affected house prices continue easing on downwards making a 2020 home move something of an improbability for many.

We at Mint see ahead a bumper year for all kinds of home extensions. Here on this blog recently for example, we highlighted basement extension and renovations. Now, check out below some guidance, thoughts and ideas on garage conversions and extensions from the ever informed HomeOwners Alliance.

add value

The Alliance team report that a garage conversion can add up to 20% to the value of your home, according to experts. More importantly perhaps, such a conversion or extension could put off the need in 2020 to move home for more space, thus avoiding what is likely to be a difficult Housing market.

Extend Instead

We at Mint have good experience with garage conversions and our 'Extend Instead' special guidance and advice service can assist and help you plan and deliver the extra room you need by extending or renovating the garage at your home.

junk store

As the Alliance indicate - and it’s true – almost half of us use our garage to store junk rather than cars. Research by RAC Home Insurance found that four in 10 of us can’t fit our cars in the garage anymore due to the amount of clutter.

cost effective

So, say the Alliance if your garage is wasted space where you simply pile up junk, then converting it into a useful room could improve the way you use your house as well as add value. Virgin Money estimates that converting your garage into an en-suite bedroom could add 20% to the value of your home. Given that the average garage conversion costs around £6,000, it is a cost-effective way of increasing your living space.

low cost

For sure, a garage conversion is a relatively low-cost way of increasing your living space. That’s because, unlike an extension, you don’t need to pay for laying new foundations or building new walls. Your garage may also already have power.

conversion cost

We at Mint see the potential cost of a garage conversion into a liveable room costing between £5,000 and £7,000. This cost could increase though if there are structural changes, plumbing needed or utilities to be added.

planning issues

Reference key planning issues, garage conversions can be completed under permitted development rights, particularly if you aren’t planning to alter the structure of the building. We at Mint are pleased to guide and help check any particular planning requirement if you have such plans.

detached garage

If you are converting a detached garage, then you may have to apply for a change of use if you are turning it into living space. The Homeowners Alliance quite rightly recommend that you check with your local planning authority to make sure your garage conversion falls within permitted development.

building regulations

Also, if there is any uncertainty, we at Mint are here to help and also guide you on the key matter of Building Regulations. A garage conversion classes as a ‘change of use’ so it will require building regulations approval.

structurally sound

The HOA point out that to comply with building regs your garage conversion must:- Be structurally sound; Have a damp-proof course; Have wall, floor and loft insulation so it is energy efficient; Have had all electrics safety tested; Be moisture proofed, with good ventilation and be fire-proofed and have escape route. Once the garage conversion is finished, a building inspector will come to check windows, doors, fireproofing measures and foundations before issuing a certificate of completion.

tasks to get done

Key works in a garage conversion include:- Making sure the walls and roof are sound; Levelling and insulating the existing floor; Damp-proofing; Infilling the door – it can be bricked up; Wall and roof insulation; Windows & doors and of course Heating and electrics.


We at Mint can help every step of the way with your garage conversion and produce a finish and style for your new room to a point that you won't be able to imagine that it was ever your cluttered up garage. For still more information on such as Insurance, Detached garage conversions, and all the ins and outs of garage conversions take a look here:-

Whatever your extension or renovation plans, Mint offers a full development and finishing service to help give you home more space and add value too. We are here to help with any questions or concerns you may have including the ‘ins and outs’ of planning issues . We have all the expert contacts on hand to help you.

Please request your quotation and planning meeting with our expert team to extend, improve or refurbish your home . Contact Mint Builders on 01242 279739or email

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