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Modern two-storey detached house with a slate roof, garage, and landscaped front garden.

Building contractors in Farnham Common with 35 years' experience

5.0 from 31 verified reviews. Three trade memberships. Fixed-price quotations after a full survey.

A straightforward route from idea to site

Explain the project

Send your plans, photographs and priorities through our enquiry form.

Survey the property

We inspect access, structure, services and constraints before final pricing.

Agree on the build

You receive a clear scope and fixed-price quotation for review.

Building work managed from start to finish

Modern detached house with a brick exterior, large glass doors, and a tidy garden with a paved patio area.

Double Storey Extensions

Add substantial space on two levels through engineered foundations, managed steelwork and staged inspections.

A man opens the sliding door of a modern garden room surrounded by greenery on a sunny day.

Garden Rooms and Outbuildings

Create an insulated office, studio, annexe or cinema with a 5-year workmanship guarantee and product warranties.

Modern open-plan kitchen and living area with light wood floors, a dining table, and a grey sofa.

Structural Alterations

Open up your layout with calculated support, controlled demolition, inspected steelwork and complete making good.

Five yellow construction vehicles lined up on a gravel lot under a clear sky.

Plant Hire

Hire maintained, insured plant by the day or week, with access checks and an optional trained driver included.

Modern red brick house with large glass doors opening onto a garden patio.

House Extensions

Add useful space with surveys, structural work, trade coordination and certification handled as one project.

A modern, minimalist home office with a desk, laptop, and large window overlooking a garden.

Garage Conversions

Turn an attached garage into warm, useful accommodation with insulation, services and supervised trades combined.

Serious building projects need firm control

Major work affects how you live, what your property is worth and where a large part of your budget goes. We bring 35 years of regional construction experience to extensions, refurbishments, new homes and complex structural work in Farnham Common.
Formerly known as Sub Structure Building Contractors, we now trade as Sub Build Ltd. The name has changed, but our focus remains practical: plan carefully, manage each trade and build the job shown in the agreed specification.

Modern two-storey white house with large glass doors, a pitched roof, and a manicured lawn.

What keeps your project on firmer ground

One accountable manager

You have one point of contact coordinating decisions, trades and progress.

Documented site safety

We provide full health and safety documentation for every building job.

Recognised memberships

Our three trade memberships provide added confidence in how we operate.

Clear information before work gets under way

You need to know what is being built, how much it will cost and who is responsible for the next step. We provide a free initial indication, then inspect the site before preparing an itemised fixed-price quotation. One project manager coordinates the design, approvals, trades and inspections. We can also arrange Homebuyer Reports with structural observations, photographs, prioritised repairs and costed recommendations before you buy or redevelop.

Beau Poole

Google

Really impressed with the team at Sub Build. They were professional, friendly and clearly take great pride in the quality of their work. Communication was excellent throughout, and the attention to detail was first class. Everything was handled efficiently and to a very high standard. I’d have no hesitation recommending Sub Build to anyone looking for a reliable, professional building contractor. Great job!

Put your building plans on firm footing

Complete our enquiry form with your plans and project details, or call us to discuss the work.

Two people reviewing blueprint plans in a modern kitchen with a garden view.
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