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.  To see prices and availability for your job click green button.

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From £2,512

Last active May 26
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Frame Brickwork

Relax... you have found a reliable extension builder in WD17. Frame Brickwork is a friendly and reliable company based in WD17 who consider no job ...

From £2,624

Last active May 26
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1st Choice Builders UK

Experienced extension builder ready to quote for your work. 1st Choice Builders UK is the best extension builder in WD17. No obligation free quotes...

From £2,424

Last active May 26
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T N Roofing

T N Roofing is an established extension buildering business in WD17. We come highly recommended and provide competitive quotes for your work.

From £2,224

Last active May 26
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A&T Building

Andy

A&T Building is an established extension buildering business in WD17. We come highly recommended and provide competitive quotes for your work.

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From £2,208

Last active May 26
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Conversion Property and Electrical Services

Our building services company Conversion Property and Electrical Services has 17 years of experience in the industry. We have been helping customer...

From £4,960

Last active May 26
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Design & Build Builders Ltd

Trusted and professional extension builder in WD17. Experienced in all extension buildering work and keeping within budget and on quote. Design & B...

From £2,472

Last active May 26
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Tonybuild

Location

Watford, WD17

Relax... you have found a reliable extension builder in WD17. Tonybuild is a friendly and reliable company based in WD17 who consider no job as too...

From £3,272

Last active May 26
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Eeoc

Emilian Czeiszperger

Hello I am Emilian , the proud owner of Eeoc Ltd, A little about me With many happy and returning customers over the last 14 years, y...

From £2,344

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Primrose Projects

Location

Hertfordshire, WD17

Primrose Projects is an established and experienced local extension builder in WD17. Please contact us for a free, no obligation quote and competit...

From £2,112

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Progressive Design London

Experienced extension builder ready to quote for your work. Progressive Design London is the best extension builder in WD17. No obligation free quo...

RSJ cost in WD17

Estimates for install an rsj near WD17

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in WD17 it ranges from £2,112 (Progressive Design London based in WD24) to £4,960 (Design & Build Builders Ltd based in WD18).

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 WD17 by posting a job with HaMuch and we will send it to extension builders in WD17.


Estimates for common extension builder jobs in WD17;

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...