Home Extensions in London

What it costs to get it right

Most problems that happen during the build are due to imperfect information before quoting and rushing to start the build. Spending now saves thousands of spending and a whole lot of stress later.

Defined

£600 inc VAT

Your architect has written the schedule. You just need help running the process from here.

  • 3 Pagers quote
  • A Schedule of Works built together
  • We join every site visit
  • Pagers quote on the same brief
  • Full quote analysis, negotiation, and value engineering

Comprehensive

£2,400 inc VAT

When you need more than a schedule, and a lot more support.

  • 3 Pagers quote & we support
  • RIBA Certified Schedule of Works
  • We join every site visit
  • Quotes priced line by line
  • Full quote reconciliation, analysis, negotiation & value engineering
Already have a Schedule of Works? Refurb or extension. That’s absolutely fine, we can still help and find a package that works for you.

Frequently asked questions

At what stage should I make contact with contractors?

As early as possible. This doesn’t mean book in site visits and pester them for a quote but introduce yourself and your potential project to the home extension contractors. They may be in your area and can meet you and see the project. The relationship with your (potential) extension contractors is incredibly important, so the better/more time you get to know each other, the more likely a successful home extension.

What is the average cost of a side return extension on a Victorian terrace in London?

This is not an exact science and will depend on multiple factors – from the size of the house extension to the specific materials used and size of building contractors. You can expect to pay £100-£140k for the side return, and this includes architects, structural engineers, surveyors, contractors, materials, fittings, glazing, and VAT. A good example of this would be James’s side-return in Clapham, a popular area for house extensions in London.

How do I save money on a rear-extension?

Choose carefully over fittings. Invest in the build rather than interior design choices—as tempting as that fancy kitchen may be—this will mean your home extension will be a better long-term investment. Concrete floors are all the trend at the moment, but instead of pouring expensive and labor-intensive concrete, try using concrete tiles for your kitchen extensions.

Do you always need planning permission for a Victorian terrace side return extension?

Simply, no! They can often be carried out under permitted development rights. That said, in London, there are plentiful factors that mean it’s wise to engage an architect. Depending on the size and height of your proposed house extension, whether you’re impacted by any listed properties or conservation areas, and proximity to your neighbouring property, it may be required. In some cases, consulting home extension contractors can help clarify the need for planning permission.

What size of building company should I choose for my extension?

This completely depends on how much risk you are willing to take and what your budget allows. There are four main types for larger projects: sole trader, builder with some help, house extension contractors with sub-contractors, and a fully established design and build contracting firm. Every homeowner’s case is very different, so this is something we always spend time discussing with you, especially for single storey projects.

Will the value of my home increase with a loft conversion?

Simply, yes. Loft conversions undoubtedly add value to your home’s sale value. Many London homes have already had a loft conversion, and their mean value was increased by up to 20%, according to The Guardian. It’s one of the more popular forms of house extensions in London, increasing living space significantly.

Loft conversion in Battersea, London - Completed by The Page

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