Garage conversions: cost breakdown
Removing Garage Doors £1300 - £2000
Replacing your car hole with bricks and mortar is the most obvious job. To get a wall built, and window added, you’re going to have to factor in not only materials but hiring contractors too. You may even need a small foundation inserted, which a structural engineer can advise on.
New Doors and Windows £600 - £1500
To make your new room feel light and bright, you’ll probably want more than one window, and you might want to do up the access point. The price of these can fluctuate wildly, depending on whether you go for standard or bespoke.
Flooring £1000 - £1300
Most garages aren’t know for their nice floors, and in older properties, it can be particularly uneven. In order to make it fit for habitation, you’ll need to pour fresh concrete down before you can even think about carpets or hardwood floors.
Insulation £750 - £1000
In order to insulate your new room, and stop your heating bills from going wild, you’ll have to build stud walls inside your old garage. This allows for your roof, and the space between the old walls and new to be filled with insulating materials. There are many ways to insulate your home, all with different price tags, so research which one will be right for you.
Removing a wall £300 - £1200
If you’re opting to use your garage to expand your kitchen or dining area, you’ll have to remove the wall separating them. As you can see, the pricing can vary massively, depending on whether the wall you’re attempting to remove is a load bearing one - a structural engineer will be best placed to advise on this.
Utilities £1000 - £4000
If converting into either a bedroom or recreational space, you won’t have to do much in way of utilities. Most garages come with electrical wiring. However, if you’re converting into a bathroom, or working with a detached garage, that’s when costs can mount. You’ll have to install piping for water and gas, and the further your garage is from the main building, the more the price will increase.
Admin Costs £400 - £600
As most garage conversions happen within the existing structure, rather than actually expanding anything, you’re likely not to need planning permission. Instead, you should be covered by permitted development rights. You’ll still need to get approval from the council (which comes with a fee), and there could be more admin costs if the council doesn’t approve the work, or you need to arrange a party wall agreement with a neighbour.
Architect £700 - £2500
You might not need an architect for basic conversions, but if you’re looking to combine rooms, or design an annex, then getting an architect on board can help maximise your project’s potential. What’s more, they take care of the planning, making sure your admin costs don’t suffer from bad paperwork.
Building Regulations Application £500-1000
Building regulations are a set of standards that all properties must meet, based around design, construction, and alterations. Half of what you’ll pay will be for the application, and the other half for inspection costs. Prices will vary based on the scale of the work.
Factors that can affect your budget...
While we've tried to give you a rough idea on the average costs you'll face, there are some factors that can dramatically affect your budget.
- The size of your conversion, the more square feet, the more budget you'll need.
- Where you live in the UK (London professionals charge a premium).
- Your property type - listed buildings cost more.
- Whether or not specialist knowledge is required, such as timbre work.
- The amount of glazing you want to install.
- Quality of materials used.
- Quality of professionals involved - a high-end architect can charge up to £10,000!
Want to know how much your conversion might cost? Book a free consultation with our team. We'll review your home and give budget estimates for your possible conversion options.