10 Inspiring Extensions for Under £75,000

Find extension inspiration with Emily Smith’s handpicked selection of value-for-money extensions that add space and style
by Emily Batesmith
15th February 2020

1. Patterned pastel interiors

Coming in at £49,750, this budget-friendly extension by David Leech Architects is packed with inspiring details.

Extension with paneled roofing

A playful palette of soft green and pink features in a covering for the patio, before running down the window frames and across a criss-cross pattern on the ceiling inside, interspersed with overhead glazing.

Square tiles sit within the poured concrete floor, reflecting the geometric lines above. The result is a stylish, sun-filled space.

2. Extending upwards

Vanessa and Will Rome bought a rundown 1930s bungalow and spent £59,325 transforming it into their perfect family home. The works involved extending up to create another storey.

The couple are no strangers to major building projects thanks to their business, Alchemy Architects, so they were able to cut costs by taking a DIY approach, buying an off-the-shelf attic truss pack from a local timber frame firm.

House in construction
Small timber-clad structure in field
Image: Alexandra Pratt

3. Oak frame extension

The owners of this listed house wanted to make the most of their surrounding views, so employed Arboreta to create a characterful 40m2 oak extension.

Glazed extension

The new space is filled with natural light and offers a fantastic connection to the outside thanks to the floor-to-ceiling windows. The project cost was around £60,000-£65,000, but fees on a similar scheme could be reduced by replacing oak rafters with softwood.

4. Maximising space

This £65,300 project by Studioort makes the most of this compact patio on a London property. There was limited space to extend into (6m2 has been added) but the designers have maximised the area to achieve a modern interior.

Neutral corner kitchen

The space now hosts a kitchen, that still benefits from an outside zone. Inside and out are linked seamlessly thanks to a level threshold and sliding doors.

Image: Agnese Sanvito

5. Ceiling statement

This striking 35m2 extension was designed by Studio Mesh and came in at an impressively low cost of £38,500. The new space took reference from the pitched roof of the house, but the real wow factor is on the inside, where exposed trusses weave across the ceiling below rooflights.

Glazed gable

Adam Woodward

6. Courtyard transformation

A charming Victorian cottage with a sea view of the Cornish coast has had a complete overhaul for just £43,000, thanks to architect couple Adam Laskey and Daisy Sawle, who are directors at Marraum.

Kitchen renovation

The project included transforming an internal courtyard into a dining space. The new area is flooded with natural light via a large roof lantern and works to connect rooms (the layout was previously disjointed) and create a natural flow throughout the home.


7. Clever & compact extension

A 12m2 extension by Manyu Architects has transformed this Victorian terraced house. The property had suffered from introverted rooms and a lack of connection to the garden.

Thin kitchen extension

Image: Paula Smith

The £66,000 project has created an open-plan living-kitchen-dining space that flows through new and original areas. At the far end of the extension, a wide bathroom window provides ample daylight through a stable-style door that can be half opened.

Timber clad rear extension

8. Cork cladding

This material is becoming increasingly popular among home extenders, and this distinctive extension project by Richard John Andrews is a prime example of why.

Cork rear extension

The 10m2 addition cost £74,000 and has produced the ideal entertaining space for modern living. The contemporary kitchen-living area has a great connection with the garden thanks to sliding aluminium pocket doors.

9. Sculptural brickwork

The twists and turns on the bricks in this 10m2 extension create a striking addition to this property. Urban Mesh Design are the architects behind the scheme, which cost £68,000.

Twisted brick extension

The intricate detailing on the masonry pattern produces an almost fairytale statement, with an aim to celebrate the past, present and future by using a traditional method in an innovative way.

10. Side return addition

Coming in just under £75,000, this new 20m2 extension by Lloyd Reading reaches into the property’s side return. It’s solved the homeowners’ issues with their dark kitchen that didn’t connect well with the garden.

Glazed bifold door rear extension

The new area merges with the original building to create a large, light-filled space achieved with ample glazing, including a rooflight. Bifold doors create a large opening to the patio and the slim oak frame structure has a warm, honey tone.

Image: Lloyd Reading

Main Image: Juliet Murphy Photography

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