Rear Elevation - As Built:   by Arc 3 Architects & Chartered Surveyors

Extending your house without blowing all your savings

Amy Buxton Amy Buxton

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Don't assume that all extensions are huge, costly affairs, as that could mean you never consider looking into them. Ask any builder or architect and they'll tell you there are countless ways to add valuable extra space to your home without needing to rob a bank.

In case you aren't ready to believe us, we found some terrific pictures of modest, simple and reasonably-priced home improvement projects that will inspire you to start dreaming up one of your own.

Now's the time to start thinking about that new kitchen or extended living room you've always wanted!

1. Simple glass box design

FAMILY HOUSE Extension:  Windows  by Caseyfierro Architects
Caseyfierro Architects


Caseyfierro Architects

It won't have taken much too time to design nor build, thus making it far cheaper than some extensions.

2. Simple and without fancy finishes

All this glazing will have reduced the material costs no end.

3. A simple step-down design


extension terminée


This flat roof extension has added valuable extra living space!

4. Small can be mighty handy

As this little and lovely extension shows! The wood cladding overshadows a simple design.

5. Cost-effective style

Though wide, this extension is so basic in its design and construction that it will have been surprisingly reasonable, cost-wise.

6. Champion dog-leg

Glenburn House, Bearsden:  Kitchen by A-Cubed Design Ltd
A-Cubed Design Ltd

Glenburn House, Bearsden

A-Cubed Design Ltd

With room enough for a dining table, this dog-leg extension looks perfectly harmonious with the rest of the house without being over the top.

7. A simple lean-to design

Rural extension, Dorset, UK:  Living room by Southpoint

Rural extension, Dorset, UK


This garden room extension has helped to create a music room inside the house!

8. Dining room extension

House Extension:  Terrace by info3551

House Extension


Creating extra space for dining is relatively common but the variety of skylights here catches the eye.

9. A simple rear extension that looks great

These basic builds are often cheaper than you expect them to be.

10. No parking required

When a connected garage is not needed, they can be quickly and easily converted into extra rooms or extensions of existing living spaces.

11. Simple flat roof extension

Looks like it was always there!:  Houses by The Market Design & Build
The Market Design & Build

Looks like it was always there!

The Market Design & Build

To keep costs really low, you can choose a simple flat roof extension design before finishing the exterior at a later date with a render or cladding of your choice.

12. Unexpected delight

This extension is very handsome and, thanks to the timber structure, must have been surprisingly cheap to build too!

13. A boxy add-on to the rear of a house

Warwick Avenue, Westminster W9, London | Flat extension:  Kitchen by GOAStudio | London residential architecture
GOAStudio | London residential architecture

Warwick Avenue, Westminster W9, London | Flat extension

GOAStudio | London residential architecture

This type of extension is extremely popular and reasonable due to so many ready-to-use templates being available.

14. Basically beautiful

Barely more than a conservatory with some solid stone wall detailing, this extension must have gone up in a matter of days and we don't think it will have hurt the pocket too much.

15. Simple, small and built from timber

This dining room extension is the perfect home enlarger for people on a tight budget.

16. A jutting square extension with a flat roof

Won't need a lot of expensive design work to be completed before it can be built, thereby making this style one of the most purse-friendly.

For more extension inspiration, take a look at this Ideabook: Bloody brilliant Yorkshire extension.

Which extension could be a viable project for your home?
Whitton Drive:  Terrace house by GK Architects Ltd

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