Loft Conversion in Harrow

Compare Loft Conversion Prices in Harrow

Home > Loft Conversions Projects > Loft conversion > Harrow

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 September 2026

Loft conversion Projects in Harrow in August 2026

7,828

Requests for quotations in Harrow in August 2026

121

Requests for Loft conversion quotations in Harrow in August 2026. -12% change from July 2026.

150

Requests for Loft conversion quotations in Middlesex in August 2026. -12% change from July 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 August 2026

121

Requests for quotations in Harrow in August 2026

90

Requests for quotations in Wembley in August 2026

25

Requests for quotations in Stanmore in August 2026

25

Requests for quotations in Edgware in August 2026

16

Requests for quotations in Ruislip in August 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.

Looking for Loft conversion in Harrow?

Get free quotes from local builders

Get free quotes

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

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

Doma Build

1 review(s)
Based: in London, ha28fd

Latest review

JAMES C., HA1
5

Conversion | Loft in Harrow

positive advive

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

Post a similar request >

01 Mar

Conversion | Loft

Harrow - HA3

Enquiry from: Pinal P

Start Date: Immediate

property owner loft conversion please call to appoint

Post a similar request >

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...

Post a similar request >

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...

Post a similar request >

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...

Post a similar request >

07 Oct

Conversion | Loft

Harrow - HA1

Enquiry from: Florence A

Start Date: Immediate

Home Owner Supplied and Fitted Call to Appoint

Post a similar request >

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 ...

Post a similar request >

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

Post a similar request >

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...

Post a similar request >

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 >

Local & reliable builders near me

Tell us about your loft conversion project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in Harrow

Get free, no-obligation local loft conversion quotes from 4 verified builders working in Harrow.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.

Our reviews

Average

Would highly recommend

Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

Good easy way to find a selection of…

Good easy way to find a selection of trades you need all in one place.

Love Local Quotes it's a big part of my …

Love Local Quotes it's a big part of my Business I would recommend to anyone

FAQs

Will I need planning permission to convert my loft?

Planning permission is not normally needed for a loft conversion as they are covered by permitted development rights. A conversion company will tell you if you do and help you with this. For more information, see our article about planning permission.

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.

What kinds of loft conversion are there?

There’s a huge range of different types of loft conversions. The most common are dormer and skylight or Velux conversions. There are also hip to gable and mansard conversions. The type of loft conversion that’s most suitable for your property will depend on the style of roof and the size of your loft.

Loft conversion

Other Top Projects in Harrow

Customer Reviews

Overall rating:


Harrow Loft conversion installers are rated 4.4 out of 5 based on 13 reviews of 95 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

Are you a builder in Harrow?

We can help you get more loft conversion work with our qualified job leads and boost your business.

Join today