Extend Your Home

A well-built extension should feel like it was always part of the house. We plan, build and finish extensions that add genuine space and value across Leeds, York, Harrogate, Wetherby and the surrounding towns and villages.

Full gable-end rear extension with orangery-style glazing, built by RGS Joinery and Building
Why RGS Joinery and building

Extensions Built to the Highest Level

Extensions are where design and craftsmanship meet - the structural work has to be right, but so does every door, window reveal and run of skirting. Because RGS started as joiners, that finishing detail is never an afterthought.

We manage the whole build ourselves: groundworks, structural steels, roofing, and every trade in between, with one point of contact from your first call to the final walk-through.

Rear house extension, built by RGS Joinery and Building
Bespoke garden room extension door and roof lantern, built by RGS Joinery and Building
What's Included

Extension work we manage, start to finish

Single & double-storey extensions

From a modest rear extension to a full double-storey addition.

Kitchen-diner & open-plan builds

Structural alterations to open up your ground floor for modern living.

Sun rooms & garden rooms

Light-filled spaces that work as a second living room, year-round.

Full design coordination

We work with your architect, or recommend one, and manage planning where needed.

Structural & groundworks

Foundations, steels and structural openings, all signed off to building regs.

Finishing to match your home

Brick, render, roofline and window details matched to the existing property.

Recent Projects

Previous extensions we’ve built in Yorkshire and other regions

Courtyard Extension after — in near York by RGS Joinery and BuildingAfter
Courtyard Extension before — in near York by RGS Joinery and BuildingBefore
Sunroom Rebuild with Velux Windows after — in Clifford, Wetherby by RGS Joinery and BuildingAfter
Sunroom Rebuild with Velux Windows before — in Clifford, Wetherby by RGS Joinery and BuildingBefore
Outbuilding to Garden Room Conversion after — in near York by RGS Joinery and BuildingAfter
Outbuilding to Garden Room Conversion before — in near York by RGS Joinery and BuildingBefore
Vaulted Gable Rear Extension after — in West Yorkshire by RGS Joinery and BuildingAfter
Vaulted Gable Rear Extension before — in West Yorkshire by RGS Joinery and BuildingBefore
Timber-Framed Extension after — in West Yorkshire by RGS Joinery and BuildingAfter
Timber-Framed Extension before — in West Yorkshire by RGS Joinery and BuildingBefore
Timber-Framed Extension with Two Decking Areas after — in West Yorkshire by RGS Joinery and BuildingAfter
Timber-Framed Extension with Two Decking Areas before — in West Yorkshire by RGS Joinery and BuildingBefore

Seen something you like?

If you’ve spotted a finish, a layout or a whole extension you love, let us know and we will make it possible!

Get In Touch
FAQs

Extension questions, answered honestly

Cost depends on size, groundworks, and the specification you choose, so we don't quote a generic figure online. We provide a no-obligation quotation after a site visit, itemised so you know exactly what you're paying for.

Planning an extension?

Get a no-obligation quote

Tell us about the space you need and we'll arrange a survey — no pressure, no hard sell.