Loft Conversion in Hillingdon

Discover Loft Conversion Prices in Hillingdon

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Average Loft conversion cost in Hillingdon

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 2026

Avg. price low

Avg. price low
£29,688

Avg. price

Avg. price
£47,500

Avg. price high

Avg. price high
£64,688

£65200

£48900

£32600

£16300

£0

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

Loft conversion installation cost in Hillingdon 2026

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

The London Borough of Hillingdon is the westernmost borough in Greater London. It was formed in 1965 from the districts of Hayes and Harlington, Ruislip-Northwood, Uxbridge, and Yiewsley and West Drayton inside the historic county of Middlesex. The borough covers an overall area of 44.67 square miles. This makes it the second largest of the 32 London boroughs by area.

Hillingdon Council governs the borough, featuring its headquarters in the Civic Centre in Uxbridge. The south of the borough's former powerful relationship with industry has diminished since the 1980s to be replaced by a mostly residential suburban population; the north continues to be a consistently residential suburban area.

The borough's residential locations expanded with the extension of the Metropolitan Railway from Harrow on the Hill to Uxbridge within the early twentieth century as well as the gradual establishment of stops along the line, becoming generally known as 'Metro-land'.

The population increased from 2001 to 2011 by 11.5 per cent, which is 4.4 per cent above the England and Wales mean of 7.1 per cent, making the borough a part of the fastest population-growth location. Within this time, the number of households also increased by 3.3 per cent, with an average of 2.7 inhabitants per household.

The borough maintains over 200 green spaces, totalling around 1800 acres. As much of the area is within the Metropolitan Green Belt it was, in 2008, on the list of least densely populated of all of the London boroughs; open spaces differ in size from the Colne Valley Regional Park to smaller gardens which include Lake Farm Country Park. For all of your home upgrades, ensure that you employ trustworthy experts in Hillingdon to make sure you get the top quality.

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Loft conversion pros in Hillingdon

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

Loft Conversion 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

Loft Conversion 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

Loft Conversion in London

Nice guy

A1 Forever Solutions LTD

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

Latest review

Peter M., TW7
4

Loft Conversion in Isleworth

Waiting for the appointment

Doma Build

1 review(s)
Based: in London, ha28fd

Latest review

JAMES C., HA1
5

Loft Conversion in Harrow

positive advive

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17 Mar

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Pinner - HA5

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FAQs

what is a hip to gable loft conversion?

This is a type of loft conversion that extends your roof on the sloping side. It is a great option to go for especially where a hipped roof effectively makes the usable floor area a lot smaller which can be a tricky affair when it comes to putting in a new staircase. Here, the roof is extended from the current ridge in such a way that it effectively fills the gap between them. As a result, this turns the hip (in a hipped roof) into a gable to create space in your roof for a loft conversion - hence the name “hip to gable.

The new gable can be done in whatever way that suits both your taste as well as your property. You can make the new gable construction in woods and then tiled to match your existing roof while you can also go for other options such as brick block pebbledash or rendering. You are also free to fit in a new window into the loft conversion end so as to allow for natural light into the loft space.

A hip to gable loft conversion is mostly found on both semi detached and end terrace buildings, particularly those constructed in the 1930s. Overall, this type of loft conversion is particularly ideal for homes that features a hipped roof and with a sloping roof at the side of the property. Some detached properties can also possess a hipped roof on the side - and as such, a double hip to gable loft conversion can also be deal as it’ll create more loft space for usage. If your home fits into the bill, then you should be aware that once the project is completed, you’ll have plenty of usable space available to both you and your loved ones.

Can my loft be converted?

Many types of loft are suitable for a loft conversion. In general, you will need at least 2.3 metres of headroom in your existing loft. This is to make sure there is enough headroom after the conversion. Speak to a conversion specialist about the probability and possibility of doing this in your house.

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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