House Extension in city

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House Extension in city

House extension comes with a large range of benefits that makes it easy to see why the extension could be a fantastic uptick in the prospective price of your home in terms of sales. So if you're looking to build a brand-new home extension yet still not encouraged about the task, we're right here to help you. Being completely aware any home building and construction work is typically a hefty investment, there's a substantial requirement to be set on your choice prior to scheduling the start of any job. So are house extensions worth it? Below are several of the leading benefits supplied by house extensions to assist you determine if it's one of the most suitable route for you.

 

What's Associated with Including an Extension?

The steps will vary relying on the scope of your extension, but you can anticipate some, otherwise all, of the listed below to be included when adding an extension to your residence:

 

  1. Obtaining Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Examining your leasehold arrangement (if appropriate) to ensure you can do what you intend to do.
  3. Employing an architect  to create the plans, considering your expected usage ( kitchen area, shower room, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance coverage carrier to allow them understand of the planned job ahead of it starting.
  6. Obtaining car parking allows if needed for your specialists to guarantee they have very easy access to your house.
  7. Making certain all prepared job drops within allowed allowables.
  8. Clearing up the space and digging deep into if essential, consisting of the elimination of trees.
  9. Structure work can begin.

 

What is the expense of a house extension in city?

If you're taking into consideration adding a two storey house extension, then setting a allocate this job would certainly be a terrific method to start. Similar to a rear extension, a 2 storey extension generally leaves the rest of the building needing some job and, due to its size, this might suggest the re-development of the whole house - which is why they can be very expensive. A few of the other influencing factors that can have big influence on a 2 floor house extension expense includes: your area, the dimension of the develop, complexity of the design (anything past the common build will typically need more competence as well as time), the glazing to be integrated (the more the glass made use of in the job, the extra the material price), in addition to the group used.

Average House extensions cost in Lewisham

The regular cost of House extensions are £51,667 in Lewisham. Costs vary based upon the materials and the company picked. The upper price range can be as high as £73,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£32,000

Avg. price

Avg. price
£51,667

Avg. price high

Avg. price high
£73,000

£73500

£55125

£36750

£18375

£0

Prices based on actual House extensions costs for Lewisham, as reported by local LeadsDoWork members.

House extensions installation cost in Lewisham 2026

Labour cost £27,000
Material cost £10,500
Waste removal £2,500
Time frame: 10-14 weeks

House extensions searches in June 2026

House extensions Projects in Lewisham in May 2026

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Requests for quotations in Lewisham in May 2026

0

Requests for House extensions quotations in Lewisham in May 2026. 0% change from April 2026.

1,000

Requests for House extensions quotations in London County in May 2026. 14% change from April 2026.

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

House extensions searches in cities and towns near Lewisham May 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 wasformed in 1965, by the London Government Act 1963, as an amalgamation of the former area of the Metropolitan Borough of Lewisham and 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. The most substantial amendments were made in 1996, when the former area of the Royal Docks in Deptford was transferred from the London Borough of Greenwich.

The principal settlement in the borough is Lewisham. The borough covers a total area of approximately 13.57 square miles. It is enclosed by the Royal Borough of Greenwich towards the east, the London Borough of Bromley to the south and also the London Borough of Southwark to the west. The River Thames forms a short section of northern boundary together with the Isle of Dogs in the London Borough of Tower Hamlets. Deptford Creek, Pool River, River Quaggy and River Ravensbourne pass via the borough.

As outlined by population estimates made in the middle of 2014, Lewisham is a borough with roughly 291933 permanent residents. About 43 per cent of homes are owner-occupiers. The Prime Meridian passes through Lewisham. Blackheath, Goldsmiths, University of London and Millwall F.C. are located inside the borough.

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House extensions pros in Lewisham

Jassi Builders Ltd

2 review(s)
Based: in Hayes, UB4 9YD

Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I have completed all my work on perfect time and leave customers in complete satisfaction. We do all types of loft conversions, exten...

Latest review

Julian F., HP2
4

House Extensions in Hemel Hempstead

No quote received

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

Patricia Z., SE21
5

House Extensions in London

Great consultation by Catalin Spent a lot of time with us understanding the project and various options.

Options Home Improvements LTD

1 review(s)
Based: in Kent, ME8 0DB

Here at Options Home Improvements we specialize is the bespoke design & installation of PVCu & Aluminium, windows and doors, orangeries & conservatories in Gillingham, Kent & South East area. Options Home Improvements was started due to the seemi...

Latest review

Lisa V., ME1
5

House Extensions in Rochester

I haven't had the extension built yet but am planning to use them

Nicholas James Construction

7 review(s)
Based: in Bromley, BR1 3AX

From past fifteen years we have been established as the finest building and construction service provider to clients in Bromley and its surrounding areas.

Latest review

Jagdish K., HA3
5

House Extensions in Harrow

Absolutely pleasant appointment. Very patient and polite, listened carefully to detail and more of my background and his...

LW Building Service

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

Latest review

Rosa S., SE20
3

House Extensions in London

I have not yet finalised quotation

JPA Building Construction LTD

1 review(s)
Based: in Twickenham , TW1 1AG

Latest review

Rosa S., SE20
5

House Extensions in London

Very nice and helpful unfortunately I am looking for a builder who lives nearby my property

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FAQs

Will my extension be expensive?

It depends on the size and type of extension. Small porches or flat roof extensions are very reasonably priced. More substantial two storey extensions can be expensive. In general, the price is roughly proportional to the amount of space you add to your home.

What types of extension are there?

There are many different types of extension. For example, you could install an orangery, flat or pitched roof extension, over-structure extension, single or double storey extension or a glass box extension. Which one of these is most suitable will depend on your existing property.

when do you need planning permission for a house extension?

If you’re planning on adding a house extension to your property, you’d probably be worried about whether or not your proposed extension would require a planing permission. Well, it may be relieving to know that not every house extension project would require a formal consent, and in fact, several extensions are covered by the permitted development rights. Not only can this save you a considerable amount of time especially at the project’s planning phase, but it’ll also save you money on the application fee. In the UK, single storey extensions to the house’s rear can be 3 metres deep for both semi detached houses and terraces or 8 metres deep for detached homes.

So how do you know when you’d require a planning permission for your home extension? Well, if your extension plan fits these criteria explained below, then your project is most likely going to be allowable as a permitted development.

• Extensions, which includes previous additions, must not go beyond half of the original house’s total surrounding land area.

• The main elevation, or side elevation where it fronts the highway, must not be extended forward.

• For single storeys, the rear additions must not extend more than the original house’s rear by more than 3 metres in both semi attached homes and terraces (4 metres for detached houses).

• Extensions to the side must be a single storey with a height not exceeding 4 metres and not going beyond 50% of the original house’s width.

• Extensions hat within 2 metres of a boundary should have a eaves height not more than 3 metres.

• Multi storey addition must not extend beyond the original house’s rear wall by a maximum of 3 metres or 7 metres of the boundary opposite the rear wall.

• Permitted development rights do not apply in listed buildings or designated areas.

are house extensions worth it?

Often referred to by many as the holy grail of home improvements, house extension comes with a wide range of benefits which makes it easy to see why the extension could be a great uptick in the potential price of your property in terms of sales. So if you’re looking to build a new home extension but still not convinced about the project, we’re here to help you. Being fully aware any home construction work is usually a heavy investment, there’s a huge need to be set on your decision before scheduling the commencement of any work. So are house extensions worth it? Below are some of the top benefits offered by house extensions to help you decide if it’s the most suitable route for you.

• Add To Your Home’s Value

Building an home extension is a great way to add value to your home before selling. Increasing the living space of your home is an incredible appeal to many buyers which significantly increases your property’s total value. However, you must ensure that the extension is impressively designed using top quality materials in order to generate more value.

• Good Alternative To House Moving

The most common reason for moving is usually due to a lack of sufficient space, but with house prices steadily on the increase a cost effective alternative is highly sought after. This alternative is house extension which creates more space for the household to spread out and have more privacy.

• You May Not Require A Planning Permission

You can extend your house and still not need to apply for a planning permission. To achieve this, simply comply with the laid down rules set under the permitted development rights.

• Extra Living Space

If you fill you’re starting to outgrow your existing structure and do not buy into the idea of moving, then your best bet might just be to extend your home.

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Lewisham House extensions installers are rated 4.3 out of 5 based on 15 reviews of 129 pros.
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