London builders with over 50 years of combined experience

Extono Construction Ltd. may be a young firm, but that does not reflect the fact the company is comprised of a team of six highly skilled tradesmen who, between them, have over 50 years of experience in their respective trades. In the past 12 years, the company founder has worked on over 200 individual building projects in London.

Are you looking for builders in central London, builders in west London, builders in south-west London?

While our offices are based in E13 and we work within a 50-mile radius of our base, the majority of our work is carried out in central London, west London and south-west London. This is the area where we have all worked before and where all our trade contacts are based. This means that we can purchase materials at competitive prices and pass those savings on to our clients, as well as ensuring that they are delivered promptly, avoiding any unnecessarily delays.

Fully insured and registered builders in London

The company was established to fill a gap in the market – an experienced team of builders, but without the overheads of a large construction business trying to juggle a workforce to keep on top of multiple projects. Instead, we work on one project at a time and are thus never called away mid-project, leaving you wondering if or when we are going to return. We specialize in property refurbishment in London and loft conversions in London.


As a registered business and limited company, we are also fully insured London builders, based on the following:

  • Employer’s Liability cover £10 million
  • Public Liability cover £10 million
  • Product Liability £10 million

We will always be happy to provide you with copies of these insurance policies for your peace of mind.


We are fully aware that one of the greatest concerns regarding payment for building work is ensuring that you do not pay for work that has not been done, or materials that have not been supplied. Having discussed this problem with our clients, we have devised a payment system that is fair to both parties.

Detailed quotation and payment schedule for building work

Prior to any agreement, you will be provided with a detailed quotation (accurate indication of cost) as opposed to an estimate (a rough guess). That quotation will indicate what work will be done, what materials will be used and a breakdown of all costs.


The estimate will also include a payment schedule indicating when we would expect payment and what it will be for. We do not ask for up-front payments for materials, but we do ask that payment be made on the day of their arrival on site for major purchases.


On agreeing a price for the project, we would then ask for a 5% deposit of the total cost as confirmation of your instructions.


Building work of any nature can incur unforeseen costs – an example would be discovering rotten joists once any flooring has been lifted. In the event that a problem is discovered, you will be advised and any cost additional work agreed upon prior to continuing – we will not simply “add it to the bill” and present you with a nasty shock at the end of the day.


Many builders tend to hide the need for a contingency in order to make their costs appear more attractive. At Extono Construction we believe in total transparency so, when doing your budgeting, we advise all clients to add a contingency sum of 15% of the total project fee as a safety net.