Garage Conversion in Lewisham

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Average Garage conversion cost in Lewisham

The regular cost of Garage conversion are £6000. Costs can change based on the materials and the tradesman hired. The material costs are mainly about £1500

Average price per Garage conversion job in 2026

Avg. price low

Avg. price low
£9,834

Avg. price

Avg. price
£14,834

Avg. price high

Avg. price high
£19,634

£20200

£15150

£10100

£5050

£0

Prices based on actual Garage conversion costs for Lewisham, as reported by local LeadsDoWork members.

Garage conversion installation cost in Lewisham 2026

Labour cost £4,200
Material cost £1,500
Waste removal £300
Time frame: 6-12 weeks

Garage conversion searches in September 2026

Garage conversion Projects in Lewisham in August 2026

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Requests for quotations in Lewisham in August 2026

0

Requests for Garage conversion quotations in Lewisham in August 2026. 0% change from July 2026.

880

Requests for Garage conversion quotations in London County in August 2026. -12% change from July 2026.

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

Garage conversion searches in cities and towns near Lewisham August 2026

Lewisham

The London Borough of Lewisham is a London borough in south-east London, England and forms a part of Inner London. The borough wascreated in 1965, by the London Government Act 1963, as an amalgamation of the former location of the Metropolitan Borough of Lewisham and also the Metropolitan Borough of Deptford, which had been created in 1900 as divisions of the County of London. Nonetheless, minor boundary adjustments have occurred since its creation. One of the most important amendments were made in 1996, when the former part of the Royal Docks in Deptford was transferred from the London Borough of Greenwich.

The local authority is Lewisham London Borough Council and it is based in Catford. The borough covers a total area of approximately 13.57 square miles. It is surrounded by the Royal Borough of Greenwich to the east, the London Borough of Bromley towards the south and the London Borough of Southwark towards the west. The River Thames forms a short section of northern boundary with the Isle of Dogs inside the London Borough of Tower Hamlets. Deptford Creek, Pool River, River Quaggy and River Ravensbourne pass through the borough.

Based on population estimates produced during 2014, Lewisham is a borough with about 291933 permanent residents. Around 43 per cent of households are owner-occupiers. The Prime Meridian passes through Lewisham. Blackheath, Goldsmiths, University of London and Millwall F.C. are positioned inside the borough.

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Garage conversion pros in Lewisham

LW Building Service

2 review(s)
Based: in London, SE20 8AG

Latest review

Angela L., SW16
3

Conversion | Garage in London

LW Building Service contacted me via phone & came to see my proposed project, very informative & thought we would contin...

Marlow Developments & Building LTD

1 review(s)
Based: in Southend-on-sea, SS9 1BT

Latest review

Zeenat A., SS3
4

Conversion | Garage in Southend-on-Sea

good survey etc but job not yet done

Similar Customer Enquiries for Garage conversion in Lewisham

31 Jan

Conversion | Garage

London - SE10

Enquiry from: Alexis P

Start Date: Immediate

new secure door (up and over, should be fine 215x200 mm), 11.5 sqm garage space (2.5 m height) electrics (install lights and sockets) insulation, plaster board, paint flooring (nothing major pvc inte...

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21 Jan

Conversion | Garage

London - SE10

Enquiry from: Alexis P

Start Date: Immediate

new secure door (up and over, should be fine 215x200 mm), 11.5 sqm garage space (2.5 m height) electrics (install lights and sockets) insulation, plaster board, paint flooring (nothing major pvc inte...

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11 Nov

Conversion | Garage

Bromley - BR1

Enquiry from: Francisco T

Start Date: Immediate

hello, we are looking to convert built in/integrated garage to a bedroom with ensuite. this will require lowering the level of the current concrete floor by 50 cm and replacement of garage door with a...

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03 Mar

Conversion | Garage

London - SE16

Enquiry from: Dominique F

Start Date: Immediate

Converting garage into additional living space. Floor and ceiling and stud walls needed. Electricity and gas already present in garage Are you the property owner: Owner of the property Do you have a:...

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03 Feb

Conversion | Garage

London - SE16

Enquiry from: Dominique F

Start Date: Immediate

Converting garage into additional living space. Floor and ceiling and stud walls needed. Electricity and gas already present in garage Are you the property owner: Owner of the property Do you have a:...

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30 Dec

Conversion | Garage

Bromley - BR1

Enquiry from: Hari A

Start Date: Immediate

Looking to insulate garage so that I can store things there over winter. Now it is getting damp.

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08 Aug

Conversion | Garage

Beckenham - BR3

Enquiry from: Hellen F

Start Date: 1 to 3 months

Home Owner Supplied and Fitted Call to Appoint Are you the property owner: Owner of the property Do you have a: Single Garage What will the space be used for: Studio Do you require Plumbing Work...

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28 Jul

Conversion | Garage

Beckenham - BR3

Enquiry from: Hellen F

Start Date: 1 to 3 months

Home Owner Supplied and Fitted Call to Appoint Are you the property owner: Owner of the property Do you have a: Single Garage What will the space be used for: Studio Do you require Plumbing Work...

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18 Jul

Conversion | Garage

London - SE3

Enquiry from: Binu V

Start Date: Immediate

Are you the property owner: Owner of the property Do you have a: Single Garage What will the space be used for: Studio Do you require Plumbing Work: Yes Do you require Electrical Work: No Would you li...

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22 May

Conversion | Garage

Beckenham - BR3

Enquiry from: Terence W

Start Date: Immediate

Submit your free quote for rated tradespeople

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18 May

Conversion | Garage

Beckenham - BR3

Enquiry from: Terence W

Start Date: Immediate

Homeowner Please contact to appoint

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30 Apr

Conversion | Garage

London - SE3

Enquiry from: Binu V

Start Date: Immediate

Home Owner Garage Conversion Please call to appoint

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29 Sep

Conversion | Garage

London - SE16

Enquiry from: ZamZam A

Start Date: Immediate

Submit your free quote for rated tradespeople

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20 Sep

Conversion | Garage

London - SE16

Enquiry from: ZamZam A

Start Date: Immediate

Submit your free quote for rated tradespeople

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29 Nov

Conversion | Garage

Bromley - BR1

Enquiry from: Debo L

Start Date: Immediate

Intending to convert an attached double garage to a bedsit with shower/toilet room Are you the property owner: Owner of the property Do you have a: Double Garage What will the space be used for: Li...

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31 Oct

Conversion | Garage

London - SE3

Enquiry from: Julie A

Start Date: 1 to 3 months

showerroom and toilet|archway from hall to lobby then separate showeroom and toilet in garage approximately 16ft by 8ft maximum. there is electric in the garage but no plumbing, Are you the property...

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12 Oct

Conversion | Garage

London - SE9

Enquiry from: Sheena A

Start Date: 1 to 3 months

Garage conversion|I'm interested in converting my garage into a living space To include a full bathroom too( WC, sink and shower). It's a single car garage which has electricity and is unattached at t...

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19 Sep

Conversion | Garage

London - SE6

Enquiry from: E

Start Date: Immediate

Detached garage conversion.

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11 Jul

Conversion | Garage

London - SE9

Enquiry from: Aman H

Start Date: Immediate

Side Garage convesion|Hi, Looking to get my garage converted into 2 rooms, a utility room (washer/dryer) and an office please. Would need the garage door bricking up with a window too please.

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20 Jun

Conversion | Garage

Beckenham - BR3

Enquiry from: Tamir I

Start Date: Immediate

Looking to purchase this property. It contains an external garage. We would like quotes on converting the garage, including costs of attachment to the main house. Additional costs for extending the pr...

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FAQs

do you need an architect for a garage conversion?
Have you decided to convert that under-utilized space ( garage) in your home to a more habitable space where you can do anything asides general storage or parking a car? If yes, then you’d probably want to know where to start or if you’d require an architect to get started. Well, you’re not alone! This is one of the most frequently asked questions when it comes to garage conversions and reasonably so. Talking about where to get started, when it comes to home improvement projects the first step to take is determining whether or not you’d require a planning permission or if your proposed garage conversion is covered under permitted development rights. Once you’ve been able to conclude on that, the next step is deciding whether you’re going to complete the project yourself, hire the services of tradesmen or employing a builder. And this ultimately brings us to the question of whether you’ll need an architect for a garage conversion. To get started, it’s highly recommended that you employ the services of a professional architect or an architectural technologist to assist in designing your garage conversion. However, most garage conversion projects are straightforward with no complex changes to be made so far you wish to avoid applying for a planning permission and staying within the set guidelines of the permitted development rights. In such events, if you’re properly trained and well experienced in the field, then it may be cost effective to design your garage conversion by yourself. It should, however, be noted that it all depends on your personal preferences and budget. If you’re on tight budget and don’t mind a straightforward design, you can save cost by not hiring an architect.
do i need building regs for a garage conversion?

Are you considering converting your garage into a more usable space in your home? If yes, then you’d probably want to know if you’ll require building regs before converting the garage. The answer to this question is yes. Although you may not require planning approval to convert your garage into a more usable space, but you’d usually need approval under the Building Regulations.

When re-structuring your garage into a habitable space, the following should be taken into consideration: structural alterations, ventilation, moisture proofing, insulation, fireproofing, escape routes as well as the submission of a building building notice or full plan application to the local council in order to inform them about the planned project.

• Walls

You’ll require an approval if you plan to infill the garage door with a window and a new wall. This is because the garage may have been built of a shallow slab which implies that a new foundation would be needed for the new wall construction.

• Floor

Even though there’s a high possibility that the garage floor is strong enough for domestic use since its designed to withstand the weight of vehicles, you may however need to upgrade to make sure it suitable for both thermal insulation and damp proofing. In addition, there may also be the need to to alter the floor level in such a way that it matches that of the remaining parts of the house.

• Ventilation

According to the Building Regulations requirements, there’s a need for adequate ventilation for each individual rooms which includes garage conversions for general health purposes. What’s going to determine the ventilation level that’ll be required is the frequency at which the room is used. Ventilation can be provided through purge or simply opening the window or via trickle ventilation.

Will my garage conversion cause disruption to the rest of the house?

It shouldn’t do. Most companies will do all the interior work first, and the last job to do will be creating the opening from the house to the conversion. A reputable company will make sure they cause as little disruption as possible during this time.

do i need planning permission for a garage conversion?

Are you thinking about converting your garage into a new space? Be it a new bedroom, gym, library or playroom, one thing you’ll have to consider before getting started is whether or not you’re going to require a planning permission. Unlike extensions that needs additional space, garage conversion is all about changing the existing structure of a space that’s already available to you - your garage. As a result, these projects are mostly covered by a planning policy that’s a bit different.

For a garage conversion, it’s very unlikely that you’ll need a planning permission. As a matter of fact, only 10 percent of garage conversions has been estimated to need a full planning permission, with the others coming under the permitted development rights. The permitted development rights, however, only provides coverage for home improvements that’s internal which implies that so far you’re not trying to enlarge your garage, you’ll not require a planning permission. But if otherwise, you’ll have to submit an application before commencing your project.

If you’re looking to comply with the permitted development rights, then your project must comply with some specific guidelines. These rules include the following:

• The work should be internal. No plans to enlarge or extend the existing garage.

• You should make sure that the materials used in carrying out the garage conversion is the same with the materials used in building the existing house.

• The building should not be extended.

You may, however, require a planning permission if you’re going to change a detached garage into a living space which could be a bedroom, small annexe or a living room.

Some houses excluded from the permitted development rights include flats, listed buildings, some new developments and most homes in a conservation area.

Garage conversion

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Customer Reviews

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Lewisham Garage conversion installers are rated 4.3 out of 5 based on 14 reviews of 92 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Garage conversion projects that have been connected with Garage conversion pros to help them. All Garage conversion contractors All Lewisham Garage conversion contractors

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