Find a builder to make your building structurally sound

RSJs support your new extension or other construction to ensure that your property is structurally sound. They are crucial parts of your building work that mustn't be ignored, and must be installed by a professional. 

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Install an RSJ cost in Heathrow

My Garden Room

From £2,528

My Garden Room is an established extension buildering business in Heathrow. We come highly recommended and provide competitive quotes for your work...

My Garden Room

From £2,512

My Garden Room - exceptional garden buildings. Designed, delivered and installed all over the UK. Visit our London showroom!

The Market Design & Build

From £2,464

The Market Design & Build is an established extension buildering business in Heathrow. We come highly recommended and provide competitive quotes fo...

ZNS Construction

From £2,632

Need an Extension Builder in Heathrow? ZNS Construction has been helping local clients (10 mile radius) with their extension buildering jobs for ma...

Bizy Construction Ltd

From £2,448

Relax... you have found a reliable extension builder in Heathrow. Bizy Construction Ltd is a friendly and reliable company based in Heathrow who co...

Ryan and Collins Ltd.

From £2,480

Need an Extension Builder in Heathrow? Ryan and Collins Ltd. has been helping local clients (10 mile radius) with their extension buildering jobs f...

Rhino Builders Ltd

From £2,200

Our building services company Rhino Builders Ltd was established in 2019. With over 16 years’ experience in the building trade, we help customers...

H Plus Global Ltd

From £2,376

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Danny's Home Renovation

From £2,216

We offer a wide range of building services to meet every type of projects.- Bathroom renovation- Kitchen refurbishment- Home extensions / conservat...

Sweet Home Construction Ltd

From £2,248

Need an Extension Builder in Heathrow? Sweet Home Construction Ltd has been helping local clients (10 mile radius) with their extension buildering ...

RSJ cost in Heathrow

Estimates for install an rsj near Heathrow

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Heathrow it ranges from £2,200 (Rhino Builders Ltd based in TW14) to £2,632 (ZNS Construction based in TW14).

Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.

Get rates and quotes to install an RSJ in Heathrow by posting a job with HaMuch and we will send it to extension builders in Heathrow.


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Estimates for common extension builder jobs in Heathrow;

Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

More extensions & conversions cost guides...