A brick dining room extension with parapet roof



Want to know more?

Try our on-line extension builder to design your own extension and get an instant price estimate.

Instant estimate

Try our on-line extension builder

Instant estimate

Ark Rooms design, manufacture and build bespoke single storey house extensions

In October 2017, receive £500 towards the cost of your extension using our instant estimator

Instant estimate
Ark Rooms vertical timber cladding and parapet roof

One Stop Shop

Our ‘turnkey’ service provides total peace of mind for our clients.  We manage every aspect of the building process, from design, planning permission and building control applications, to manufacturing and construction.

Ark Rooms brick exterior with overhanging roof

Bespoke Design

Every extension is bespoke and overseen by a fully qualified architect to achieve a flexible and beautiful addition to your home.

Ark Rooms white render exterior with overhanging roof

Construction Method

We build your extension using Structural Insulated Panels (SIPS).  Our super insulated timber frame extensions are incredibly quick to construct ‘on site’ reducing the inconvenience to you and your neighbours often associated with a building project.

Ark Rooms brick cladding

Value for money

Our fixed price provides complete reassurance for our clients.  We provide a quotation which clearly explains the costs with no hidden extras.  As we provide the architectural and building services, we deliver outstanding value for money.

Your extensions in four steps

icon 1

Online estimate

Step 1 – Free!

Fill in our simple estimate builder and get an instant estimate for the cost of your extension


icon 2

Design consultation

Step 2 – Free!

 We visit your home and provide a free design consultation

icon 3

Planning application

Step3 – £1000 inc VAT

Our architects survey your home, prepare technical drawings and submit the planning permission and building control applications

icon 4


Step 4 – balance of payment

When planning permission is granted, we build your extension!

Meet the team

Ark angels

What our clients say about us

“We met Jason at the house he was currently building with Ark Homes, and we immediately warmed to his easy going style and were very impressed with the quality of the workmanship on site.”



“Annelies was a good listener, receptive and very clear.”



“Nick was really clear about the options and prices and the build was delivered exactly as and when promised.“



“No stress during the building process. If I was doing it again, I would call Peter straight away.”



“After two frustrating years of trying to find a quick and cost-effective solution to replacing and expanding our kitchen side extension, we were delighted to have finally come across Ark Rooms. The whole process of working with them, from start to finish has been painless, fast and even fun! But most importantly, the finished result has far exceeded our expectations.

All of the team at Ark Rooms are so easy to deal with and extremely professional. All agreements were met in a timely manner and every time we had a question during the process, they responded quickly and clearly.

We loved that they took care of the whole process from design, planning to building and this even included the electricity and flooring. This made life so much more simple for us and during building there was a minimum intrusion into our daily lives.

We now have a lovely, bright and very functional utility/laundry room.

We can highly recommend Ark Rooms to anyone who is looking for a cost-effective and professional one-stop-shop for their extension.

Thanks for a great job!” – Mr & Mrs H in Newbury

“As a recent customer to Ark Rooms I would like to share our experience.  The sales and design team couldn’t have been more helpful and they showed us all their latest designs and clearly explained the materials they use, which gave us great confidence in them from day one!

Once we decided to go ahead, we thought that we would have lots of paperwork to do for the planning stage, but oh no …. Annelies did all of it: the building designs, the planning application, the application to the building control and all the things that cause the most stress – she did it all!

Throughout the build the team kept us fully up to date with progress and what was coming up the next day. All the builders were so friendly and helpful which made such a big difference in what could be a very stressful time and the building was built to a very high standard. This extra room has given us the space and the extension that we have always wanted, at a fraction of the cost and time compared to a conventional build.

I cannot recommend Ark Rooms and their wonderful team enough. Thank you all so much.” Ms W & Ms G – Hungerford

Would you like £500 towards the cost of your extension?

Autumn may be officially upon us, but to mark the change of seasons we will contribute £500 towards the cost of your extension (valid October 2017). After using the estimator you will receive an email with a £500 voucher.

A fully finished, single storey 9m2 extension, measuring 3m x 3m costs just £14,750 plus vat.

(9m2 is equivalent to approximately 100ft2 or a 10ft x 10ft extension)

Please call us on 01635 229229 for more information or click below for an estimate

Instant estimate
dining room table
living room sofa

Our partners

Excellent people we work with