High Barnet, London, EN5

Rear And Side Extensions, Kitchen/dining Open Plan, Out Build In Garden, Landscaping

This house renovation project was one of the most complicated ones we’ve ever undertaken! The rear and side extensions, together with complex landscaping, were performed during the wettest winter on record for the UK together with the first COVID-19 lockdown. Despite all these obstacles we managed to complete this project successfully, on budget and only with 4 weeks’ delay.

The project involved demolition of the existing conservatory and removing around 30 tons of clay soil. The garden was split into three levels, and the retaining walls were built with a complex drainage system. The garden house was built at the top of the garden out of concrete blocks, with a flat roof and fibreglass cover. All walls of the garden house and retaining walls were wrapped with K-rend.

Rear and side extensions were built with brick & block cavity, flat roof with warm deck and two skylights. Flat roof was also covered with fibreglass. A new kitchen was fitted, and a new shower room and utility room were located in the new side extension.

Gas and electric meters were moved outside. New electrics were installed throughout. New plumbing together with new system boiler and unvented cylinder were installed. All areas were tiled and decorated to achieve a high-end standard.

Welcome to our estimator!

With its help, you will be able to find out the approximate cost of your project, as well as send us a request to calculate the exact cost. The more accurately you specify all the data, the more accurate the cost estimate will be.


What type of project do you require? Or a combination of projects

Your location

Floor area


A few more question...

Estimated cost


Inner London

Inner London

Outer London




Non Conservation

Type of property:

Detached house

Detached house


Semi-detached house

Terraced house

Listed builing:




Build quality:




Please measure each floor area of your house:

Please measure floor area/s of your new extension/s:

Please measure floor area of your 1st floor:

Please measure floor area of your existing garage:

Please measure floor area of your flat:

Please specify floor area of your outbuild:

Please specify floor area of your new build:

New boiler:





When are you planning to start?

Are you planning to live in during the project?




Have you completed the design phase for this project?

Yes, I have all the necessary designs and approvals

Yes, I have all the necessary designs and approvals

I´m not sure


Please contact me to discuss my ideas

Which of these design stages or approvals will you be needing?

Please contact me to help with completion of my design phase

Your estimated cost is:

Design costs are not included in the estimated price.

If our total estimated cost meets you budget, we can move to the next step - a detailed specification with my prices for each and every item. Please leave your contact details and we will contact you within one working day.