Loft Conversion in Brentford

Obtain Loft Conversion Prices in Brentford

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Loft conversion companies in Brentford

Looking for loft alteration experts in Brentford? Our loft space conversion renovators in Brentford will be able to supply you the best quotations to have a loft altered in your property or home.

The installation of a attic room extension in your home can be carried out swiftly, enabling you to make full use of the altered room and begin benefitting from an extra room. The attic alteration will be carried out by a vetted, approved company and once this has been done you'll be in a position to begin using the new location right away. With your newly modified loft space you'll be able to have an extra bedroom, study or possibly a game room.

With a array of loft space alteration styles you'll be in a position to find something that suits your taste, whilst being handy and appealing.

We're going to offer you no obligation quotes from loft area alteration companies in Brentford who will be able to provide you with no cost surveys and quotes for the alteration. Then you can do a comparison of these loft area conversion prices and make sure to get the best bang for your buck.

Average Loft conversion cost in Brentford

The regular cost of a Loft conversion is £25000. Costs differ based upon the materials and the firm selected. The upper price range can be as high as £28750. The material costs are mainly approximately £6250

Average price per Loft conversion job in 2025

Avg. price low

Avg. price low
£31,250

Avg. price

Avg. price
£50,000

Avg. price high

Avg. price high
£67,917

£68500

£51375

£34250

£17125

£0

Prices based on actual Loft conversion costs for Brentford, as reported by local LeadsDoWork members.

Loft conversion installation cost in Brentford 2025

Labour cost £17,500
Material cost £6,250
Waste removal £1,250
Time frame: 6-12 weeks

Loft conversion searches in May 2025

Loft conversion Projects in Brentford in April 2025

859

Requests for quotations in Brentford in April 2025

10

Requests for Loft conversion quotations in Brentford in April 2025. -50% change from March 2025.

150

Requests for Loft conversion quotations in Middlesex in April 2025. -12% change from March 2025.

We noted 859 requests for house quotes in Brentford. Of these quote requests the number of loft conversion quotes within Brentford was 10. Quotatis would have been able to match these consumers with up to four suitable contractors who were available for work within Brentford at that time. Ask for a free property survey from reliable companies in Brentford.

Source: Numbers calculated based on the search volumes in major search engines

Loft conversion searches in cities and towns near Brentford April 2025

25

Requests for quotations in Feltham in April 2025

25

Requests for quotations in Hounslow in April 2025

20

Requests for quotations in Ashford in April 2025

20

Requests for quotations in Teddington in April 2025

19

Requests for quotations in Hampton in April 2025

Brentford

The West London town of Brentford forms a section of the Borough of Hounslow and is located at the confluence of the River Thames with a population of close to 50,000. Brentford doesn't have much in the way of modern houses with many properties dated from the 1930s, which means there will always be household enhancements needed in the region. For work you need finished be certain to only use vetted tradesmen in Brentford for the best price and high quality work.

Looking for Loft conversion in Brentford?

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Loft conversion pros in Brentford

Dream the Build

19 review(s)
Based: in London, EC1V 2NX

DREAM the Build. Ltd ' Constructing your Vision Making home development exciting, fun and asset building experience , future proofing household & investors Who we are ? Starting fresh in a new country is never easy, but what we did Catal...

Latest review

A., NW7
4

Conversion | Loft in London

Good quote

Unique Lofts LTD

2 review(s)
Based: in South mimms, EN6 3NX

Professional loft conversions at Unique Lofts, we are a specialist loft company with over 15 years of experience in construction. Call us today.

Latest review

Alan P., EN11
5

Conversion | Loft in Hoddesdon

only company that quoted

London Project Management Ltd Ta Modern Attics

1 review(s)
Based: in London, N3 2DN

Modern ATTICS specialise in loft conversions and House Extensions. We cover all areas of London - North, East, West, Central and South London.

Latest review

Helen W., NW4
4

Conversion | Loft in London

Nice guy

A1 Forever Solutions LTD

1 review(s)
Based: in London, SE25 6EP

Latest review

Peter M., TW7
4

Conversion | Loft in Isleworth

Waiting for the appointment

Similar Customer Enquiries for Loft conversion in Brentford

14 Jan

Conversion | Loft

Brentford - TW8

Enquiry from: Vivien C

Start Date: Immediate

*homeowner loft conversion please call to appoint

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18 Oct

Conversion | Loft

Brentford - TW8

Enquiry from: ARVIND K

Start Date: Immediate

Homeowner Please contact to appoint

Post a similar request >

24 Apr

Conversion | Loft

Brentford - TW8

Enquiry from: Veronique C

Start Date: Immediate

We are doing a loft extension. Dormer. 2 bedrooms.

Post a similar request >

04 Jan

Conversion | Loft

Brentford - TW8

Enquiry from: V

Start Date: Immediate

Loft conversion|terraced house build in 1930. We would like to have a loft convrsion with 2 bedrooms. No bathroom Velux only

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08 Apr

Conversion | Loft

Brentford - TW8

Enquiry from: Andrew V

Start Date: Immediate

Home Owner double storey side extension, (as next door neighbour has done) but addition extension at the back of the house to extend the kitchen. assistance with planning application may be required...

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12 Sep

Conversion | Loft

Slough - SL1

Enquiry from: Wency D

Start Date: Immediate

homeowner loft conversion please call to appoint

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10 Jun

Conversion | Loft

Slough - SL3

Enquiry from: Rups G

Start Date: Immediate

stairs installed to loft are you the property owner: owner of the property property type: terrace what are you looking to convert the space into: bedroom/s are you looking to have stairs: yes do you r...

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05 Jan

Conversion | Loft

Uxbridge - UB9

Enquiry from: Prashant M

Start Date: Immediate

loft conversion type: hip to gable rooms in conversion: 1 x bedroom. architectural plans done: no planning permission status: not sure building regulations status: not sure listed building: no propert...

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02 Jan

Conversion | Loft

West Byfleet - KT14

Enquiry from: Sarah C

Start Date: Immediate

raise and convert the loft space into bedroom space. are you the property owner: owner of the property property type: detached what are you looking to convert the space into: bedroom/s are you looking...

Post a similar request >

30 Aug

Conversion | Loft

Rickmansworth - WD3

Enquiry from: Gayathri B

Start Date: Immediate

dormer extension with an ensuite are you the property owner: owner of the property property type: semi detached what are you looking to convert the space into: bedroom/s are you looking to have stairs...

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20 Aug

Conversion | Loft

Slough - SL2

Enquiry from: Bev S

Start Date: Immediate

loft conversation 2 rooms and a bathroom are you the property owner: owner of the property are you looking to have stairs: no do you require any windows: dormer do you require plumbing work: yes do y...

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04 Apr

Conversion | Loft

Addlestone - KT15

Enquiry from: Samuel T

Start Date: Immediate

*homeowner loft conversion please call to appoint

Post a similar request >

29 Mar

Conversion | Loft

Addlestone - KT15

Enquiry from: Samuel T

Start Date: Immediate

*homeowner loft conversion please call to appoint

Post a similar request >

21 Feb

Conversion | Loft

Slough - SL3

Enquiry from: M

Start Date: Immediate

homeowner loft conversion please call to appoint

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06 Feb

Conversion | Loft

Slough - SL3

Enquiry from: Sandra P

Start Date: Immediate

we have already converted our loft to a tv room, but now we want to add a dorma with a ensuite. we have velux windows to the rear. are you the property owner: owner of the property property type: ter...

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22 Jun

Conversion | Loft

Slough - SL3

Enquiry from: Nasir J

Start Date: Immediate

customer in slough area made an enquiry for loft conversion online. confirmed via sms at 16:33 please call to arrange an appointment to discuss options property type: semi detached what are you looki...

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15 Jun

Conversion | Loft

Staines-upon-Thames - TW18

Enquiry from: James W

Start Date: Immediate

hip to gable and full back dormer are you the property owner: owner of the property property type: semi detached what are you looking to convert the space into: living space are you looking to have st...

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18 May

Conversion | Loft

Slough - SL2

Enquiry from: John P

Start Date: Immediate

conversion of loft space which totals 8.6m (ridge length) by 7.9m. no ridge height increase is needed. shape is very regular. stairs to be located in centrally in the rear elevation. loft to be conve...

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17 May

Conversion | Loft

Rickmansworth - WD3

Enquiry from: David E

Start Date: Immediate

hip to gable loft conversion with rear dormer and the re-roofing of the entire roof on semi detached house are you the property owner: owner of the property property type: semi detached what are you...

Post a similar request >

26 Apr

Conversion | Loft

Slough - SL2

Enquiry from: Sharon J

Start Date: Immediate

velux window conversion, one bedroom with storage in the eaves for what we are currently storing in the loft. are you the property owner: owner of the property property type: terrace what are you look...

Post a similar request >

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FAQs

how much is a loft conversion?

With the ability to add approximately one third of your existing living space ( by converting your old, unused attic) to your home or property without having to let go of your garden, it’s quite easy to see the reason why loft conversion has rapidly grown to become one of the most popular home improvements in the UK. However some homeowners usually shy away from the idea simply by looking at the perceived high cost of carrying out such a project, despite several researches showing that loft conversions offers the best rate of return on initial investment when compared to the other home improvement projects. So exactly how much would it cost to carry out this project?

Just like several other home improvement projects, the cost of a loft conversion varies greatly depending on a wide range of influencing factors. These factors include the size of your home, how old your home is as well as the quality of the fixtures and fittings you want to install. For instance, a high end bathtub alone can cost you thousands of pounds, meanwhile you can also construct a full bathroom suite on just a couple of hundred pounds. However, to give you an idea of the minimum cost of a loft project we’ll look at the most popular types and the minimum cost of each.

✓ Internal Loft Conversion - The most affordable type of loft conversion tends to start from £25,000 and above.

✓ Dormer or L-Shaped Dormer Loft Conversion. These are the most popular types of loft conversion. Dormer price tends to start from £35,000, while the L-shaped dormer starts from £45,000.

✓ Mansard Loft Conversion - This involves replacing the entire side of a sloping roof with a vertical wall and flat roof. It requires a planning permission. The type of loft conversion usually starts from £45,000.

✓ Hip To Gable Loft Conversion - This usually starts from £50,000.

how long does a loft conversion take?

If you’re about to carry out a loft conversion project, you’d probably be wondering how long it’ll take to complete the task. Well, you’re not alone! This is one of the most common questions when it comes to loft conversion projects, however, providing a set timeframe for completion of such projects is impossible as all loft conversions vary. There are different factors that can determine the duration of your project. These factors include, the materials to be used, the type of the proposed loft conversion, the kind of staircase you’ll like to have installed, the number of windows included, the number of rooms to be added as well as a number of other influencing factors. As a result of these variables, the milestones and timings provided are only to be taken as guidelines. If you’d really like to have a set date, you can get in touch with a professional for help.

Generally, it’ll take up to 8 weeks to complete a loft conversion project.

✓ The first week activities will include putting up scaffolding, receiving the first materials for the build and creating an opening in the roof to gain access to the loft space.

✓ In the second week, the structure of the roof will be ammended and more support added.

✓ Third week, the floor joists will be fitted, building of the loft conversion will start, completion of the external roof works and commencement of plumbing and electric works.

✓ Fourth week, complete the building, construct the loft floor, fit the roof windows, insulation, ventilation and internal stud walls.

✓ Fifth week, apply plaster and plasterboard to the room walls, create a staircase opening and fit the new staircase.

✓ Sixth week, plaster the staircase area, complete plumbing and electrical works, hang the doors, fit skirting, handrails and bannisters and start decoration.

✓ Seventh week, complete the decoration and clean and wipe out all wastes.

✓ Eight week, complete all the remaining tasks.

how much is a dormer loft conversion?

Are you considering a dormer loft conversion for your home? If yes, then you’d probably want to know how much it costs. Unfortunately, due to the several variables and influencing factors, a precise answer can not be provided for all dormer loft conversions. In this article we’ll give you a vague idea of the general cost so you can set a more realistic budget and start planning.

There are three main types of loft conversion which includes the Velux, Dormer, and Mansard. Out of the three types, the dormer happens to be the most common type and possesses a small flat roofed extension with a window. The dormer loft conversion will usually cost within the range of £25,000 to £30,000.

The price for a smaller dormer loft conversion, mid range dormer loft conversion and large scale dormer loft conversion will be at £2,000 to £7,000, £10,000 to £30,000 and £40,000 to £60,000 respectively. However, you should take note that the prices given are all based on varying influencing factors such as the type of installation that is selected, the type of the rood, en suite conversion as well as other customization. Changes in price can be as a result of the materials required and the extra time per labour that’s needed to complete this home improvement project by the tradesmen employed.

Furthermore, a dormer loft conversion average cost will also depend on the type of dormer you opt for. Here is a list of the most common applications:

✓ Blind dormer loft conversion - £3,200 to £4,400

✓ Recessed dormer - £1,300 to £1,850

✓ Barrel roof dormer - £3,000 to £4,600

✓ Gable dormer - £5,500 to £7,500

✓ Hipped roof dormer - £5,600 to £6,660

✓ Pedimented dormer - £12,700 to £23,100

✓ Flat roof dormer loft conversion - £13,800 to £21,600

do you need planning permission for a loft conversion?

Typically, loft conversions do not require planning permission except in certain situations. They’re usually covered under what’s known as Permitted Development. Certain building works like loft conversion, rear extension and conservatories are granted planning permission by local authorities. Permitted Development, however, gives you a free range to improve your home without having any issues from the councils or regulations. Before your planned loft conversion can be covered under Permitted Development, there are some certain criteria that must be met. This criteria includes the following:

✓ The extension must not go beyond the existing slope of the roof at the front of the house.

✓ The loft space converted must not go beyond 40 cubic metres in a terraced house.

✓ The roof’s height must not be increased by the extension.

✓ The loft space converted must not reach beyond 50 cubic metres in a detached or semi detached house.

✓ The plan for the extension mustn’t involve structures like balconies, verandas or anything other structures of this nature.

✓ The roof extension should be positioned as far back as possible or at least 20cm from the existing eaves.

✓ The side that faces the window openings should be at least 1.7m beyond the floor and the windows should also be obscured.

✓ The roof extension must not overhang the existing roof or wall of the house.

✓ The materials that are to be used must be similar or the same to the materials that has already been used on the house’s exterior.

However, you should bear in mind that there are some properties that are exempt from Permitted Development. Examples of these type of properties include conservation areas, Areas Of Outstanding Natural Beauty and World Heritage sites. Permitted Development does not also provide coverage for listed buildings.

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