The prices on this information are correct as of 2022

Loft conversions are an effective way of maximising the accessible area in your house. Which means that if you happen to can’t or don’t need to transfer residence in the mean time, however want the additional area, you’ll be able to nonetheless improve your own home with a loft conversion.
Loft conversions additionally improve the worth of your own home (generally by as much as 20%), and infrequently don’t require planning permission functions, as a result of they are typically lined by Permitted Growth Rights (PDRs). You possibly can test planning permission laws for loft conversions right here.
How a lot you find yourself spending in your new loft will rely on the kind of conversion you’re excited by getting. The commonest loft conversions, and their common prices are:
Kind of loft conversion | Common value |
Velux | £20,000 to £25,000 |
Dormer | £40,000 to £55,000 |
Mansard | £45,000 to £60,000 |
Hip to gable | £45,000 to £55,000 |
Bungalow | £20,000 to £55,000 |
Bungalow loft conversions may be constructed utilizing any of the above kinds.
Loft conversions can be utilized for all types of issues, from an extra bed room to a house workplace, or perhaps a fitness center. What you do together with your further area is totally as much as you, providing you with an enormous quantity of artistic licence.

Take into account that the costs on this information embrace value of labour and value of supplies. The costs don’t embrace VAT.
Anticipate to pay extra if you happen to stay in London and the Southeast, the place value of labour can rise by as much as 20% on common. The dimensions of your loft, and extra prices like underfloor heating, may also carry up the general value.
This information covers costs for all of the various kinds of loft conversions, in addition to what different further prices would possibly seem like:
How a lot does a mean loft conversion value?
The common value of a loft conversion is £40,000, with a decrease vary of £20,000 and an higher vary of £60,000, relying on the dimensions of your loft, and what kind of loft conversion you’re getting. The place you reside within the UK can even have an effect on prices.

There’s a lot you are able to do together with your loft. Leaving your previous bins to gather mud could be a waste of area when you might flip it right into a visitor bed room, or a playroom for youngsters as a substitute. The probabilities are infinite, and all of them might add worth to your own home.
Conversions additionally assist you to create extra space with out taking it away from different areas of your own home, like your backyard, in the way in which that rear and wrap-around extensions do. Additionally, as a result of your loft already has a number of essential structural foundations, it truly prices much less (per sq. metre) to transform an previous loft into a brand new room, than to pay for one more kind of extension.
When you’ve got a loft stuffed with ‘lifeless’ area, changing it’s a nice, cost-effective and value-adding approach to enhance your own home.
Are you questioning what it’s best to count on to pay for a loft conversion?
On common, a loft conversion prices round £40,000, with a decrease vary of round £20,000 and an higher vary of £60,000.
Nevertheless, in some cases, loft conversions can value as little as £15,000 or as a lot as £75,000, all relying on measurement and elegance.
It can take between 6 and 12 weeks in your loft conversion to be constructed.
Do you know that, in lots of circumstances, a loft conversion may also make your own home extra eco-friendly and energy-efficient? That is because of the added insulation that’s put in within the loft in the course of the conversion. The price of insulating your new loft can be lined on this information.
How a lot does a velux loft conversion value?
The common value of a brand new, velux loft conversion is between £20,000 – £25,000. The costliest velux loft conversions can go as much as £50,000 or much more, while on the decrease finish, one-window, small velux conversions can value as little as £15,000. Measurement and variety of home windows impacts value.

Velux or roof gentle loft conversions are the only and least costly, as a result of they don’t contain structural modifications to your roof. As an alternative, a skylight window is added (often a velux window), in addition to a brand new ground and staircase to entry the loft space.
They’re probably the most inexpensive loft conversion, making them very fashionable with householders. In addition they don’t often require planning permission, which makes them nice for individuals dwelling in conservation areas.
As a result of they don’t contain structural modifications, velux conversions present the least quantity of added area, and are due to this fact largely suited to properties that have already got giant lofts. When you’ve got a big loft, or wish to convert yours with a reasonably tight price range, then a roof gentle conversion could be the best renovation for you.
Taking between 4 and seven weeks to construct, the typical velux loft conversion prices between £20,000 and £25,000 to finish. This consists of supplies and constructing prices (reminiscent of flooring, plastering, plumbing, electrical energy, and staircase becoming).
Nevertheless, how a lot you spend in your velux conversion will rely on the dimensions of your loft.
Velux loft conversion costs, in accordance with measurement:
One room + one window (30 m2) | £20,000 |
One giant room or two small rooms + two home windows (50 m2) | £20,000 to £25,000 |
Two rooms + two or extra home windows (65 m2) | £25,000 to £30,000 |
Two or extra rooms with a number of home windows (100 m2) | Upwards of £50,000 |
Some velux loft conversions can value as little as £15,000, say for lofts of round 20 m2, while bigger tasks might value as a lot as £50,000 or much more, if a number of home windows are being added to a really giant loft.
How a lot does a dormer loft conversion value?
The common dormer loft conversion prices between £40,000 and £55,000.

Appropriate for properties with a sloped roof, a dormer conversion entails constructing a box-like construction with a flat roof that stands out of your present roof.
As a result of they are often constructed on most roofs, together with semi-detached, indifferent, or terraced homes, they’re a preferred approach so as to add loft area and introduce extra gentle into your own home by further home windows.
The wonderful thing about a dormer loft conversion is that there are many completely different kinds of dormer home windows so that you can select from, permitting you a excessive diploma of artistic licence when it does to the surface look of your own home.
You can go along with:
- A gable fronted, or doghouse dormer loft extension
- A hip roof dormer loft extension
- A shed roof dormer loft extension
- A flat roof dormer loft extension
- A mansard roof dormer loft extension
- An L-shaped dormer loft extension
Not all of those will probably be appropriate in your explicit roof. The perfect factor to do is converse to a specialist, who can advise you on the most suitable choice in your residence. Inform us about your mission, and get some free quotes right this moment.
Dormer loft conversion costs, in accordance with measurement:
One room + one dormer (30 m2) | £30,000 to £40,000 |
One giant room or two small rooms + two dormers (50 m2) | £40,000 to £50,000 |
Two rooms + two dormers (65 m2) | £45,000 to £55,000 |
Two rooms and two or extra dormers (100 m2) | Upwards of £60,000 |
The common value of a dormer loft conversion is between £40,000 and £55,000. On the decrease finish, you might spend round £28,000, while some dormer loft extensions can attain £70,000 for actually giant conversions with a number of dormers. These costs account for supplies and price of labour.
Dormer loft conversions are likely to take between 6 and 9 weeks to construct.
How a lot is a mansard loft conversion?
On common, the price of a brand new mansard roof conversion is between £45,000 and £60,000. On the decrease finish, a small mansard loft conversion might value as little as £35,000, and even much less, while the higher value bracket for a mansard roof extension is over £70,000.

In case your precedence is getting as a lot further loft area as attainable, then a mansard loft extension is the best choice on this record, as a result of it offers you the biggest loft conversion. In consequence, they are typically the costliest to construct.
They often get constructed on the rear of your property, with horizontal roofs which have an nearly vertical again wall. In addition to a regular mansard, you might additionally look into an L-shaped mansard, or a double loft mansard conversion.
The excellent news is that they improve the worth of your property, and are visually engaging from the surface. You possibly can select what materials to make use of on the surface of your mansard, from slate to timber to brick cladding.
Due to the structural modifications concerned in constructing a mansard loft extension, you’ll probably require planning permission to have one constructed. When you aren’t positive whether or not a mansard loft conversion is the precise match for you, get into contact with a talented tradesperson who might help you resolve.
The common mansard loft conversion prices between £45,000 and £60,000.
Mansard loft conversion costs, in accordance with measurement:
One room + one window (30 m2) | £35,000 to £50,000 |
One or two rooms + two home windows (50 m2) | £45,000 to £50,000 |
Two rooms + two home windows (65 m2) | £50,000 to £60,000 |
Two rooms + two or extra home windows (100 m2) | Upwards of £70,000 |
Out of all of the conversion varieties, mansard loft conversions take probably the most time to construct, with a mean of 8 to 11 weeks to finish.
How a lot does a hip to gable loft conversion value?
The common hip to gable loft conversion prices between £40,000 and £60,000. A smaller, one-window, one-room hip to gable conversion might value you £35,000, while greater, two room tasks with a number of home windows might value as a lot as £60,000, or much more. Your location will affect prices.

Hip to gable loft conversions are constructed into properties with hipped roofs, and are appropriate for lots of semi-detached, indifferent, or end-of terrace properties. A hipped roof is a roof that has three, equally downward sloping sides. The loft is often constructed by turning one of many sides of your roof right into a gable roof, making a (triangular-shaped) vertical finish wall.
Although there are some exceptions to the rule, most hip to gable loft conversions don’t require planning permission, as they fall underneath permitted growth rights. For extra info, you’ll be able to entry the Planning Portal web site.
Hip to gable loft conversions will add much more area and pure gentle to your own home. On account of structural modifications required to the joists and roof of your own home, they often fall in a higher-end value bracket, costing rather less than mansard conversions.
A mean hip to gable loft conversion will value you round £50,000, or between £45,000 and £55,000.
Hip to gable loft conversion costs, in accordance with measurement:
One room + one window (30 m2) | £35,000 to £45,000 |
One or two rooms + two home windows (50 m2) | £40,000 to £50,000 |
Two rooms + two home windows (65 m2) | £50,000 to £55,000 |
Two rooms + two or extra home windows (100 m2) | Upwards of £60,000 |
A hip to gable loft conversion often takes between 6 and 9 weeks to finish.
Are you considering of getting a loft conversion? Inform us about your mission, and get some free quotes right this moment.
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How a lot does a bungalow loft conversion value UK?
The common bungalow loft conversion prices £45,000.

It’s changing into more and more fashionable for bungalow homeowners so as to add a loft conversion to their residence. It is because they will practically double the accessible area of a bungalow, basically making a second storey.
You would possibly simply be wanting so as to add a room to your bungalow. Or you might get a dormer loft conversion, a hip to gable loft conversion, or a mansard loft conversion added onto your bungalow.
These might value you:
- Round £50,000 for a hip to gable conversion
- Round £55,000 for a mansard conversion
- Round £45,000 for a dormer conversion
- Round £20,000 for a brand new room in your loft
The larger the conversion, the extra it’s going to value. Some bungalow conversions can attain upwards of £70,000.
Most bungalows don’t require planning permission, as they’re thought of permitted developments.
Do you want planning permission for a loft conversion?
Whether or not or not you have to planning permission in your loft conversion is dependent upon whether or not your mission follows permitted growth guidelines or not.
Be sure you test the standards, which may be discovered right here.
How a lot does a loft conversion value with ensuite?
A master suite with an ensuite, of round 30 m2, in a brand new dormer loft conversion with a roof gentle and new staircase might value you round £45,000.
How a lot you spend in your ensuite loft conversion is dependent upon the standard of supplies.
On common, shopping for and putting in every of those rest room objects will value you:
Rest room Merchandise | Common value of shopping for and putting in |
New rest room tiles | £500 – £2,500 |
New bathe | £350 – £600 |
New bathtub | £300 – £450 |
New rest room | £300 – £350 |
New basin | Round £350 |
New faucets (pair) | Round £150 |
New radiator | Round £400 |
Underfloor heating | Starting from £600 – £1,850 for 10m2 |
How a lot does it value to insulate a loft conversion?
Insulating your loft is an important step within the loft conversion course of, and one that may make sure you improve the energy-saving options of your own home.
A quarter of warmth is misplaced by the roof of an uninsulated residence. You can save over £250 a yr on power payments by correctly insulating your new loft conversion.
How a lot you find yourself spending on insulation will rely on the kind of insulation you get, and the dimensions of your loft. It might value you wherever from £300 to £3,500.
Extra prices
You could need to price range for a number of different further prices.
Constructing inspection prices
You have to constructing regulation approval in your loft conversion, to make sure that it’s structurally sound and protected. A constructing management surveyor will perform website inspections to make sure this. This tends to value round £400 – £800.
Architectural plans value
You received’t essentially want architect plans to be able to convert your loft, but it surely doesn’t harm to have a transparent concept of what the plan in your mission will seem like, to assist make sure the mission runs easily. An architect may also be sure you maximise the quantity of obtainable area.
The price of this service ranges from round £500 to £2,000, relying on the scope of your mission, who you resolve to rent, and the way detailed you need your plan to be. Architects are likely to cost between 3% and seven% of the full construct value.
Structural engineer hiring value
A structural engineer carries out website visits, value calculations, and website drawings. They often value between £750 and £2,200.
When you aren’t positive whether or not or not you would possibly want this service, get into contact with some expert tradespeople, and collect a number of quotes. Be sure you have a good suggestion of what’s included in your bundle, in an effort to price range successfully in your loft conversion.
Electrical wiring shifting value
You could want to maneuver {the electrical} wiring in your loft, particularly if there’s a danger that it’s going to intervene with the insulation. It’s essential to rent an electrician for this, which might value round £150 – £250.
Rent a talented electrician to assist transfer your wiring.
Underfloor heating
You possibly can select between electrical underfloor heating and moist (water) underfloor heating, the second of which is barely dearer.
When you do need to set up underfloor heating then you have to to price range for roughly £1,000, or between £600 and £1,850, for a ten m2 loft.
The prices for underfloor heating, per m2, are:
Kind of underfloor heating | How a lot will it value? |
Electrical UDH retrofitted per m2 | £60 – £85 |
Moist UDH retrofitted per m2 | £135 – £185 |
Electrical UDH in new construct per m2 | £50 – £75 |
Moist UDH in new construct per m2 | £120 – £135 |
How a lot does it value to take away a water tank?
In case your water tank is held in your loft, you’ll in all probability need to transfer it throughout your conversion. This service often prices round £750.
How can I lower your expenses on a loft conversion?
The perfect factor you are able to do to be sure you don’t waste your cash is to rent the precise tradespeople, who’re expert, and can do the job for a good value. Hiring cheaper labour might ultimately incur prices down the road because of repairs or perhaps a entire new renovation.
We might help you discover the precise tradespeople in your mission, so inform us what you bear in mind to get a free quote, right this moment.
Listed here are some useful suggestions to make sure your mission doesn’t exceed your price range.
- Get a number of quotes – don’t accept the primary give you get, however reasonably store round for a number of completely different quotes first, so you may get an excellent sense of how a lot a conversion might value you. Additionally, don’t be tempted by the most cost effective quote, because the bundle would possibly merely offer much less, resulting in further prices later. At all times test what’s included in your quote
- When you’re including plumbing to your loft conversion, reminiscent of for a loo, try to guarantee that plumbing is put in above or close to present plumbing elsewhere in your own home, as it will be sure you don’t spend plenty of extra cash on huge, structural plumbing modifications
- Purchase bigger home windows reasonably than extra home windows – if you wish to maximise how a lot pure gentle is coming into your loft conversion, purchase greater home windows reasonably than a number of smaller ones, as this will probably be cheaper
- Steer clear of bespoke – normal merchandise (and normal sizing) is cheaper to buy and have put in, serving to you retain answerable for your price range
- Take into account if there’s any adorning you are able to do your self. Smaller, much less intricate jobs may be DIY, reminiscent of portray partitions, if you happen to’re assured and don’t thoughts chancing an expert end. This may lower the price of hiring a painter.
Conclusions
Loft conversions are an effective way to benefit from the unused area in your house, and infrequently for lots much less cash than an extension.
Be affected person, take your time, and ensure all the things is in place for an expert, top-quality conversion. The easiest way to do that is by doing all of your analysis, in an effort to be sure you know what to anticipate with regards to planning, and paying, in your loft conversion.
Take into account that the dimensions of your oft, and the place you reside within the UK, are the largest elements impacting on prices. Extra insulation and underfloor heating can even elevate costs.
And all the time rent expert professionals. Discover a loft conversion specialist right this moment.