We offer a variety of Home extensions that will add the much needed space to your property as well as adding value. Whether it’s a rear ground floor kitchen extension, side return, or two storeys, we can cater for your requirements.
We are able to design and build your exciting project, managing the process from start to finish.

Wraparound home extension
This is a great option to significantly increase the size of your home. Maybe you want a downstairs study, larger kitchen and living space, or even a bedroom with en suite for a family member.
From – £55,000
Double storey home extension
A really good option if you love where you live, lack the space for your growing family. With this option, you can add another bedroom, additional bathroom as well as creating more downstairs kitchen and living space.
Double storey extensions vary greatly in price depending on the size and structural work required.
From – £65,000


Rear home extension
A rear extension is by far the most popular of home extensions, often used to move the kitchen out further to create a larger downstairs living area.
Typically, this type of extension will include the following:
- 5 × 3 meter with a flat or mono pitched roof
- Plaster work ready for decorating
- Architraves and skirting boards
- Lights and power sockets
- Rear door and window
From – £31,500
Side return home extension
A side return extension is a great way of adding more space and creating a kitchen / dining area, with a great open feel to your property. By adding roof windows and large opening doors to the rear you can really add natural light to your home.
From – £35,000

Some of our recent home extension projects
Click on the photos to see more about these projects. You can also learn more about our news on the blog page.
What our customers say
Couldn’t recommend more!
Mrs Wallwork
Tring
Mrs Wallwork
Tring
Will be happy to use AS Construction again
Dan Marley
Berkhamsted
Dan Marley
Berkhamsted
I would definitely recommend AS homes
Mrs Faretta
Watford
Mrs Faretta
Watford
Very impressed with the standard of the work done.
David Williams
Bovingdon
David Williams
Bovingdon
Hard working and the project remained on schedule
Mr Obiajulu
Tring
Mr Obiajulu
Tring
Very professional and great communication
Clare Jones
Hemel Hempstead
Clare Jones
Hemel Hempstead
We can’t praise them enough
Mrs Richardson
Watford
Mrs Richardson
Watford
Reliable, honest and reasonable priced
Tabure & Tahini Restaurants
Berkhamsted and St Albans
Tabure & Tahini Restaurants
Berkhamsted and St Albans
The quality of the porch is absolutely outstanding
Mrs Stokes
Berkhamsted
Mrs Stokes
Berkhamsted