House Extension Builders in Surrey & West London
Beautifully built house extensions designed to create more space, improve how your home works and add long-term value.
GET A FREE QUOTE CALL 07708 377 894Professional House Extension Services
We manage the work from the early planning stage through construction and finishing, with clear communication, careful workmanship and a focus on delivering a high-quality result.
Rear Extensions
Create a larger kitchen, dining or family space with a well-designed single-storey rear extension.
Side-Return & Wraparound Extensions
Make better use of underused side space and transform the ground-floor layout.
Double-Storey Extensions
Add substantial living space across two floors where planning and the property allow.
Why Choose KP Build Contractors?
Experienced Local Builders
Practical building experience across residential extensions, loft conversions and major refurbishments.
Clear Communication
We keep you updated throughout the project so you always know what is happening next.
Quality-Focused Finish
We pay close attention to the structure, details and final finish rather than rushing the job.
How We Work
Site Visit & Consultation
We discuss your ideas, inspect the property and understand the scope, access and finish you want.
Planning & Pre-Construction
We review drawings, structural requirements, building control and the practical programme for the works.
Construction
Our team carries out the structural and building work in a coordinated sequence.
Finishing & Handover
We complete the final finishes, snagging and handover so the new space is ready to use.
Areas We Cover
We undertake residential building projects across Surrey, Middlesex, West London and South West London.
Frequently Asked Questions
How much does a house extension cost?
The cost depends on size, structure, specification, access and the level of finish. We provide a tailored quotation after reviewing the project.
Do you work from architects' drawings?
Yes. We can price and build from architectural and structural drawings and coordinate the construction around the approved design.
Can you manage the whole extension project?
Yes. We can manage the project from structural works through to the internal finishing stages.
Do you work in occupied homes?
Yes, where practical. We plan access and sequencing carefully to minimise disruption during the build.
Planning a house extension?
Tell us what you are looking to achieve and we can arrange a site visit and quotation.
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