Loft Conversion in Harrow

Compare Loft Conversion Prices in Harrow

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Loft conversion companies in Harrow

Searching for attic room alteration industry experts in Harrow? Our attic conversion renovators in Harrow are able to provide you the best quotations to have a loft altered in your household.

The installation of a loft space extension in the house can be carried out quickly, enabling you to make full use of the converted space and start benefitting from an additional room. The loft area transformation will be carried out by a vetted, certified business and as soon as this has been finished you'll be able to begin using the new location right away. With your newly altered attic you'll be able to have an extra bedroom, study or possibly a playroom.

With a number of loft area alteration styles you'll be in a position to find something that fits your taste, whilst being hassle-free and pleasing.

We shall provide you no obligation quotes from attic room alteration companies in Harrow who will be able to provide you with free surveys and quotations for the alteration. You may then compare and contrast these loft space conversion prices and guarantee to get the best value for your money.

Average Loft conversion cost in Harrow

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 Harrow, as reported by local LeadsDoWork members.

Loft conversion installation cost in Harrow 2026

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

Loft conversion searches in July 2026

Loft conversion Projects in Harrow in June 2026

7,828

Requests for quotations in Harrow in June 2026

121

Requests for Loft conversion quotations in Harrow in June 2026. -12% change from May 2026.

150

Requests for Loft conversion quotations in Middlesex in June 2026. -12% change from May 2026.

We noted 7,828 requests for property or home quotes in Harrow. Of these quote requests the amount of loft conversion quotations within Harrow was 121. Quotatis would have been able to match these customers with up to 4 suitable fitters who were available for work within Harrow during those times. Request a free property survey from reputable companies in Harrow.

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

Loft conversion searches in cities and towns near Harrow June 2026

121

Requests for quotations in Harrow in June 2026

90

Requests for quotations in Wembley in June 2026

25

Requests for quotations in Stanmore in June 2026

25

Requests for quotations in Edgware in June 2026

16

Requests for quotations in Ruislip in June 2026

Harrow

Among London's most greatly inhabited boroughs holds about 239,000 and is set towards the north east of the capital. The town of Harrow was developed in 1934, becoming a borough in 1954. The borough encompasses a contrast in affluence; even though there are high-end regions such as Harrow-on-the-Hill and Pinner, a 2011 report shows 7,000 children are in poverty. Don't spend more than you need to for your household improvements and get the ideal price from vetted installers.

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Loft conversion pros in Harrow

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

Doma Build

1 review(s)
Based: in London, ha28fd

Latest review

JAMES C., HA1
5

Conversion | Loft in Harrow

positive advive

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 Harrow

05 Nov

Conversion | Loft

Harrow - HA3

Enquiry from: Viju U

Start Date: Immediate

Customer made enquiry for Loft Conversion quotes online. Homeowner lives in Harrow area. Please call to arrange appointment

Post a similar request >

29 Jan

Conversion | Loft

Harrow - HA2

Enquiry from: Kevin B

Start Date: Immediate

looking at the possibility of changing existing older style loft extension to dormer style loft extension. looking for advice, costs and timescales for consideration. are you the property owner: owner...

Post a similar request >

14 Nov

Conversion | Loft

Harrow - HA3

Enquiry from: Aurelia L

Start Date: Immediate

upgrade velux to dormer. the sellers have had a loft conversion done in 2020 (without building regs and planning permissions) so we would like to rectify this and apply for full permissions for this p...

Post a similar request >

06 Nov

Conversion | Loft

Harrow - HA2

Enquiry from: Ashish J

Start Date: Immediate

I looking for an architect to prepare a drawing for the loft conversion and the extension in the back garden and take permission from the Harrow council.

Post a similar request >

22 Oct

Conversion | Loft

Harrow - HA2

Enquiry from: Ashish J

Start Date: Immediate

I looking for an architect to prepare a drawing for the loft conversion and the extension in the back garden and take permission from the Harrow council.

Post a similar request >

13 Mar

Conversion | Loft

Harrow - HA3

Enquiry from: G S

Start Date: Immediate

Customer visited the myloftconversionprices.co.uk site and submitted an enquiry. Property type: Semi detached, Property owner: Owner, Looking to convert into: Bedroom, Work description: Bedroom

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01 Mar

Conversion | Loft

Harrow - HA3

Enquiry from: Pinal P

Start Date: Immediate

property owner loft conversion please call to appoint

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08 Feb

Conversion | Loft

Harrow - HA3

Enquiry from: Jack H

Start Date: Immediate

new roof floorboards decorating electrics 2 windows no domer are you the property owner: owner of the property property type: semi detached what are you looking to convert the space into: storage are...

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22 Sep

Conversion | Loft

Harrow - HA2

Enquiry from: Manos M

Start Date: Immediate

Boarding of loft to create basic storage space. Currently there is hatch access and insulation. I m unsure of loft size but would guess less than 20m2. Are you the property owner: Owner of the proper...

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18 Feb

Conversion | Loft

Harrow - HA1

Enquiry from: Fatima L

Start Date: Immediate

The loft room is boarded off and used an a study/ guest room, there is a spiral stairs in place, but old plasterboard needs changing and roof properly insulated. Are you the property owner: Owner of t...

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07 Oct

Conversion | Loft

Harrow - HA1

Enquiry from: Florence A

Start Date: Immediate

Home Owner Supplied and Fitted Call to Appoint

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30 Sep

Conversion | Loft

Harrow - HA2

Enquiry from: Daniel J

Start Date: Immediate

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: Yes Do you require any windows:...

Post a similar request >

12 May

Conversion | Loft

Harrow - HA3

Enquiry from: Joti K

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Terrace What are you looking to convert the space into: Bedroom/s Do you require any windows: Skylight, Velux Do you require plumbing ...

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14 Apr

Conversion | Loft

Harrow - HA2

Enquiry from: BEENA B

Start Date: Immediate

Home Owner Call to Appoint

Post a similar request >

11 Apr

Conversion | Loft

Harrow - HA2

Enquiry from: Ab R

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Other Forms: 17, 45, 19 Agreed to recieve quotes for selected products: Yes Please call to appoint

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10 Apr

Conversion | Loft

Harrow - HA2

Enquiry from: G M

Start Date: Less than one month

Property Type: Semi Detached Have you got a rough idea of the design you would like: Yes How many bedrooms are you looking to have: 3-4 Bedrooms How many storeys are you looking for the property to h...

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17 Feb

Conversion | Loft

Harrow - HA1

Enquiry from: Dimple M

Start Date: Less than one month

Are you the property owner: Relative of Owner Property Type: Terrace What are you looking to convert the space into: Bedroom/s Are you looking to have stairs: Yes Do you require plumbing work: Yes Int...

Post a similar request >

02 Feb

Conversion | Loft

Harrow - HA1

Enquiry from: Kerrie O

Start Date: 1 to 3 months

Customer visited the myloftconversionprices.co.uk site and submitted an enquiry. Property type: Semi detached, Property owner: Owner, Looking to convert into: Bedroom, Work description: Bedroo...

Post a similar request >

23 Oct

Conversion | Loft

Harrow - HA3

Enquiry from: Shane M

Start Date: Immediate

Customer visited the myloftconversionprices.co.uk site and submitted an enquiry. Property type: Semi detached, Property owner: Owner, Looking to convert into: Bedroom, Work description: Hi I alread...

Post a similar request >

08 Oct

Conversion | Loft

Harrow - HA1

Enquiry from: Dharmesh P

Start Date: Immediate

this is for next year planning quote for approximately

Post a similar request >

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FAQs

what is a dormer loft conversion?

A dormer loft conversion is a type of loft conversion that’s built making use of a roof’s existing slope. In other words, it’s an existing roof’s extension which is constructed in such a way that allows for an additional floor as well as head room especially suitable for lofts lacking good amount of usable space. The dormer loft conversion is simply an addition to the existing roof looking much like a box-like build constructed onto a pitched roof as it creates walls that are vertical to the slope while also being 90 degrees to the floor.

This type of loft conversion is the most common amongst homeowners in the UK mainly because it represents a cost effective means through which you can add an additional usable space to your home or property. The structure extends for the slope of the existing roof and can easily be altered to suit various tastes or styles. Furthermore, if you’re looking for a type of loft conversion that aids to foster reduced disruption to work, then dormer loft conversion is also your best bet. This is due to the fact that the structure is built from a scaffolding made outside a home.

There are different types of dormer loft conversion and the one which will best suit your property will depend on the property type, be it detached, semi detached or terraced as well as the existing roof shape and size. The dormer loft conversion is a popular choice for a lot of homeowners for a variety of reasons. Let’s have a look!

✓ It’s very cost effective

✓ The dormer loft conversion does not require planning permission so far it complies with certain conditions and limitations

✓ It adds an extra headspace as well as floor space.

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 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 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

Loft conversion

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Customer Reviews

Overall rating:


Harrow Loft conversion installers are rated 4.4 out of 5 based on 13 reviews of 99 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Loft conversion projects that have been connected with Loft conversion pros to help them. All Loft conversion contractors All Harrow Loft conversion contractors

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