Flat Roof Extensions

Plus Rooms is London’s leading provider of kitchen extensions. We specialise in designing and building luxurious open-plan spaces that blend style and practicality. Our team has a reputation for outstanding customer service, with 60% of new business having been referred to us by previous customers.

Flat roof extensions are a great modern solution for customers seeking extra space for cooking, dining and entertaining. Customers who want to make the most of our comprehensive service can also incorporate a bespoke loft conversion into the design. Here’s everything you need to know about our premium flat roof extensions.

What are the Benefits of a Flat Roof Extension?

When it comes to extensions, the type of roof is a crucial element to get right. A flat roof is a popular choice for many types of extensions. Firstly, it is a cost-effective solution as building a flat roof requires less structural engineering than other roof types.

The compact streamlined shape of a flat roof exudes modern style, so it blends well with contemporary buildings. Finally, the flat roof shape is well-suited for flat skylights and roof lights. This makes flat roofs a great option for those who want to bring in more natural light and create a brighter living space.

Flat roof extension ideas

Flat Roof Extension Design & Build Services

At Plus Rooms, it’s our job to offer professional guidance so you find your perfect choice of extension. Once you’ve settled on your ideal extension we’ll bring that vision to life, revitalising your current space with a combination of design flair and functionality.

All of our extensions are bespoke, so we can go beyond offering just extra living space, and design brand new multi-purpose spaces for customers to use however they desire. We can create a vast range of design features and structural elements, which we then bring to life with alluring colour choices and high quality finishing touches.

As well as designing and building your flat roof extension, our team can also provide planning services. By handling applications for planning permission and advising on matters such as party wall agreements and permitted development, you can have peace of mind that your new extension complies fully with building regulations.


How Much Does a Flat Roof Extension Cost?

There is no set cost for a flat roof extension. While roof types are indeed an important cost factor, the final cost of your extension will also depend on size, as well as what particular type of extension you are looking for. For example, a small wraparound kitchen extension with a flat roof has an estimated cost of £93,000.

For more estimated costs for different types of extensions offered by Plus Rooms, use our extension cost calculator for a simple initial quote.

For more flat roof extension ideas, browse our portfolio of recent projects below. If you have any questions about flat roof extensions or our design and build services, contact Plus Rooms today.

See more house extension ideas here.

Find out more about our other home extension types: side extensionsside return extensionsside and rear extensionswraparound extensions, and rear extensions

View our portfolio of flat roof extensions

Beauval Rd

East Dulwich

Barnard Hill

Muswell Hill

Casewick Rd

West Norwood

Freshford St


Haslemere Ave


Woodbastwick Rd 1


Woodbastwick St 2


Braemar Ave


Kylemore Rd

West Hampstead

Revelstoke Rd


Murray Rd


Rosemont Rd




Griffiths Rd


Hillcourt Rd

East Dulwich

Milner Rd


Muncaster Rd


Palace Rd

Crouch End

Portsmouth Ave

Thames Ditton

Rectory Lane


Rowfant Rd


Sheen Rd

Richmond upon Thames

Winfrith Rd


Addison Gardens Loft

Shepherd's Bush

Ealing W13 loft


Fawnbrake Ave Loft

Herne Hill

Lime Grove loft


Lordship Lane loft

East Dulwich

Piermont Green loft

East Dulwich

Reckitt Rd Loft


Interested in Kitchen Extensions?

View our wide portfolio of Kitchen projects