Dormer
A box-shaped extension out of the back of the roof. It's the most popular choice and adds the most headroom for the money.
Loft conversions in Enfield and Barnet
Fair quotes from loft builders we've checked
Tell us about your loft in 60 seconds. We'll match you with a checked, insured local firm who will survey your loft and give you a written quote. Free, with no obligation.
Free, no obligation
You don't pay us anything, ever.
Vetted builders only
Insurance, track record and references checked.
Your details stay private
They only go to the firm you're matched with.
Local firms
Builders who already work in Enfield and Barnet.
How it works
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Step 1
Tell us about your loft
Answer a few quick questions about your home, the space you want and your timescale. It takes about a minute.
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Step 2
We match you with a vetted local firm
We pick a builder who covers your postcode and does your type of loft, and tell you who they are straight away.
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Step 3
Get a written quote
They'll call to arrange a survey, then give you a written quote. If it's not right for you, you don't have to go ahead.
What a loft conversion costs
Every house is different, but these ranges give you a starting point. Your quote will be based on a survey of your own loft.
Prices are typical ranges, not quotes. Things like an en-suite, steel beams, new stairs and party wall surveys can change the price.
| Loft type | Typical cost |
|---|---|
| Velux or rooflight | £15,000–£25,000 |
| Dormer (about 30 m²) | £40,000–£60,000 |
| Hip-to-gable | Quoted after survey |
| Mansard | Quoted after survey |
Four ways to convert a loft
Hip-to-gable
Straightens a sloping side roof to create a full-height wall. It's common on semis and end-terraces.
Mansard
Rebuilds the roof slope at a steep angle for the most space. It usually needs planning permission.
Velux or rooflight
Adds windows into the existing roof with no change to its shape. It's the quickest and cheapest option, if you already have enough height.
Not sure? Choose "Not sure yet" in the form, and your builder will advise you at the survey.
We check the builder before they quote you
Most people pick a loft builder from a leaflet or a neighbour's recommendation. We do the checks first, so you're not left to chance.
Every Fairwright builder must have
- Public liability insurance, which we've seen the certificate for
- At least 3 years of trading
- Good reviews and 2 references we've checked
- A written contract and staged payments, so you never pay everything up front
Our promise
- Your details go only to the firm you're matched with, never to call centres or lists.
- If a builder doesn't meet our standards, we stop working with them.
- We're an independent matching service, not a builder. We'll always tell you exactly who you're dealing with.
Where we work
We currently match homeowners across the boroughs of Enfield and Barnet, including:
Enfield Town, Palmers Green, Southgate, Winchmore Hill, Edmonton, Barnet, Finchley, Whetstone, Mill Hill, Edgware, Hendon.
Outside these areas? We're adding new areas soon. Enter your postcode and we'll let you know when we reach you.
Questions people ask
Is Fairwright really free?
Yes. You never pay Fairwright anything. Our partner builders pay us a fee for each introduction, so the service is free for you.
Who will contact me, and how?
One vetted local loft firm. We'll tell you their name as soon as you submit the form, and they'll usually call within one working day to arrange a survey. You'll also get a confirmation email from us.
Do I need planning permission?
Often not. Many loft conversions on houses in England fall under permitted development, which has limits on size: up to 40 cubic metres of extra roof space for a terraced house and 50 cubic metres for other houses. These rights don't apply to flats or in conservation areas, and some streets have extra restrictions. Your builder will check your property. See the Planning Portal for the full rules.
Do I need building regulations approval?
Yes, all loft conversions do, whether or not they need planning permission. Your builder will normally arrange it.
What if I'm just researching?
That's fine. Choose "Just researching" in the form and we'll send you our free cost guide instead of passing your details to a builder.
Can I change my mind?
Yes, at any time. There's no obligation to accept a quote, and you can ask us to delete your details whenever you like.
Find out what your loft would cost
Answer a few questions and a checked local firm will survey your loft and give you a written price. It's free, and you don't have to go ahead.