House Extensions in Dorking and Across Surrey
Add space, improve the way your home works and create a seamless new addition with a complete extension service from initial discussion through to the finished build.
More Room for the Way You Want to Live
A well-designed house extension can provide the extra space your family needs without the disruption and expense of moving home. Johnson Construction & Building Ltd builds property extensions throughout Dorking and the wider Surrey area.
Our complete-package approach brings the principal building work and supporting trades together. From groundworks and structural openings to roofing, carpentry, electrical, plumbing and finishing work, the different stages can be coordinated through one experienced team.
- Family-run building company established in 2010
- Extensions tailored to the existing property
- One main team and point of contact
- Workmanship guaranteed for additional reassurance
Designed Around Your Home and Available Space
The right design depends on your property, garden, intended use and the amount of additional room you want to create.
Rear Extensions
Extend into the rear garden to create a larger kitchen, dining area, family room or open-plan living space.
Side-Return Extensions
Make use of narrow space alongside the property, often transforming the layout of Victorian and Edwardian homes.
Wraparound Extensions
Combine rear and side-return additions to create a substantial change to the footprint and internal arrangement.
Over-Structure Extensions
Add space above an existing garage or structure where the property, foundations and design allow.
A New Space With a Clear Purpose
The best extension is shaped around how you intend to use it. We take time to understand what is missing from your current home and how a new addition should connect with the existing rooms and outside space.
Popular Uses
- A larger kitchen and dining room
- An additional bedroom or guest suite
- A home office, studio or gym
- A playroom or flexible family room
- Open-plan living connected to the garden
Managed From the First Discussion to Handover
Our team can coordinate the structural work and supporting trades needed to turn the agreed design into a finished addition.
Discuss Your ExtensionConsultation
We discuss your property, ideas and priorities.
Planning
The design, structural needs and project scope are established.
Construction
Groundworks, structure, roofing and trades are coordinated.
Completion
Finishing details and final checks bring the project together.
Examples of Our Building Work
A selection of finished and in-progress work from the JCB portfolio.
Helpful Information Before You Begin
Requirements vary by property and design, so project-specific checks are always important.
Will my extension need planning permission?
Some extensions may be possible under permitted development while others require formal planning approval. This depends on factors such as the property, size, position and design, so the project should be checked individually before work begins.
Can you coordinate the supporting trades?
Yes. JCB can coordinate the main building work with carpentry, roofing and the electrical, plumbing and heating requirements of the agreed project.
How long does a house extension take?
Timescales depend on the size, complexity, approvals, structural work and specification. A realistic programme can be discussed once the design and scope are understood.
Which areas do you cover?
JCB is based in Dorking and undertakes suitable extension projects across Surrey, including Bookham, Cobham, Esher and Reigate.
Tell Us About Your Ideas
Include your location, property type and what you would like the new space to achieve. Tim or Harry will get back to you.
Request an Extension Quote
Provide as much information as possible about your proposed project.