You tell us your vision, we'll provide the solution.

We are professional, reliable installers of bespoke house extensions, orangeries, conservatories, landscaping, and more across the Essex and London areas. We also work across, but not limited to, Chelmsford, Benfleet, Maldon, Billericay, Brentwood, and Ingatestone. We pride ourselves on offering premium home improvements, designed with the latest techniques and built using the highest grade materials. We also provide an unrivaled customer support service, ensuring every step of your installation is hassle-free and completed as quickly as possible.

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Fill in our quick and easy contact form to either get a quote or enquire for further details!

House Extensions




Stunning Modern Design

Enhance your home with the latest innovations and enjoy a degree of comfort and aesthetic that has been designed to suit the standards of today. With this, you’ll be able to enjoy a contemporary level of thermal efficiency, security, durability, comfort, practicality, and seamlessness within your home.

Top Quality Materials

We utilise premium grade building materials to ensure all of our house extensions, orangeries, conservatories, and landscaping services stand as a worthwhile investment for your home. This means that you won’t have to worry about your new living space failing you over the years: we also offer a comprehensive guarantee.

Professional Installation

We have a wealth of experience when it comes to the installation of our range, handling everything from the planning and processes through to the installation and build. We also assign a dedicated project manager to your home improvement, right from inception through to completion.

View Our Brochure!

Have a flick through our brand new brochure, or better yet download a copy for yourself!

10 Year Guarantee

All our extensions have a 10 Year guarantee on all materials and workmanship.

Looking for an Extension?

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House Extensions

House Extensions Designed For You

  • Approved by UK’s leading building inspectors
  • £500 Cash back option
  • Free Architectural Plans & Submission Included
  • Designed by our architects
  • Your own project manager
  • Winter special offer


Our Project Management

Contact Us!

Get in touch with a member of our friendly team to find out more about our highly competitive prices. You can also get in touch should you have any questions about our range, prices, or any of our services. We look forward to hearing from you.


Mr Vost - Essex - 20/07/2018 “Jamie, the project manager was fantastic, he could see the vision we had and knew just how to make it better. His work was of such a standard that once the Extension was finished (which included the demolition of two exterior walls) we asked him to complete other works which included removal of interior walls to open up the kitchen, utility room and the conservatory. The team then went on to landscape our garden.  I highly recommend and look forward to working with him and the team again in the future.”
Mr and Mrs Adebayo - Croydon - 03/11/2018 “Kirkwood were very good to us. We will definitely be telling all our friends and recommending their services”
Mr Patel - Fulham - 21/09/2018 “We can see now that our investment was safe in the hands of the Kirkwood team. It’s hard to know what company to choose initially, but I feel comfort knowing now I have reliable builders”
Mr and Mrs Williams - Bexley - 20/04/2018 “Worth every penny..... and tea bags”
Mr and Mrs Ashlington - Greenwich - 06/12/2018 “The project was run to a military standard and would highly recommend”
Mr Davis - Essex - 11/8/2018 “Punctual, professional and great value for money, thankyou for all your hard work!”
Miss Camfield - London - 1/06/2018 “Pleasure to work with a genuinely nice team of people”
Mr and Mrs Lindsay - Essex - 19/04/2018 “We would like to say a big thankyou and are slightly overwhelmed by the efforts. No problem was too big for the project manager, the team just got on with it and the result is everything we could have asked for”
Mr and Mrs Rouse - Croydon - 1/06/2018 “Great investment, we strongly recommend Kirkwood”

Case Study

Mr Hayes - SW1

“I just wanted to say how strongly I would recommend these guys. They made a complicated build look easy and when requests or alterations were made it was never a problem. Very rare in a building company.”

Latest News

Piling & House Extensions

Piling Foundations House Extensions London

Does My Extension Need Piled Foundations? Jamie Lindsay from Kirkwood UK, London, sheds some light on piled base extensions. You may be planning ...

House Extensions, London

We offer a range of house extensions to meet a wide spectrum of tastes, needs, and property styles. This includes modern house extensions, ...

New Website Launch

Our new website is a fantastic place for you to view our full range of services, including our modern house extensions, traditional house ...