From extensions and renovations to full commercial builds — Bizzy Builders delivers exceptional craftsmanship across London and the Home Counties.
We handle every aspect of construction — from the initial groundwork to the final finishing touches. Fully insured, all work guaranteed.
Single and double storey rear, side and wrap-around extensions designed to maximise your living space and add genuine value to your property.
Dormer, Velux, hip-to-gable and mansard loft conversions — we transform unused roof space into stunning, fully habitable rooms.
Full basement excavation, tanking, and conversion. We create additional living space below ground with full waterproofing guarantees.
From single dwellings to small residential developments, we manage new build projects from groundworks through to completion and handover.
Full property renovations, period property refurbishments, kitchen and bathroom fit-outs, and structural alterations.
Office refurbishments, retail fit-outs, restaurant and hospitality spaces — delivered on time and within budget with minimal disruption.
Flat roof installations, pitched roofing repairs, felt and GRP systems, guttering, fascias, soffits and full waterproofing solutions.
Block paving, resin bound driveways, patios, garden landscaping, boundary walls and fencing — transforming your outdoor spaces.
Full first and second fix electrical and plumbing — our certified in-house trades handle all services from heating systems to rewires.
Bizzy Builders was founded on a simple principle: do the job right, treat clients fairly, and never cut corners. That ethos runs through everything we do — from our initial site surveys to our final snagging inspections.
Public liability insurance up to £5M. All operatives CSCS card holders. CHAS accredited. We take health & safety seriously on every site.
We work with architects, structural engineers, and planning consultants to take your project from concept through to planning permission and building regulations approval.
No hidden costs or surprise invoices. We provide detailed, itemised quotes before any work begins, and we stick to them.
We set realistic timelines and deliver on them. You'll receive regular progress updates throughout your project with a dedicated project manager on hand.
We stand behind our work. All structural work comes with our 10-year guarantee, giving you total peace of mind long after completion.
Based in London, we cover all 32 boroughs plus surrounding counties. If you're within the M25 — and often beyond — we can come to you.
Contact us and we'll arrange a free, no-obligation site visit to discuss your project, understand your vision and assess the site.
We provide a fully itemised, fixed-price quote within 5 working days — broken down by trade with clear timelines and payment schedule.
If required, we coordinate with architects and handle all planning applications and building regulations submissions on your behalf.
Our expert team gets to work. You'll have a dedicated site manager and receive regular progress photos and updates throughout.
We complete a thorough snagging inspection before handing over your finished project — along with all certificates and guarantees.
Bizzy Builders transformed our Victorian terrace with a stunning rear extension and loft conversion. The team were professional, tidy and delivered exactly on time. We couldn't be happier.
Used Bizzy Builders for a full office refurbishment across two floors. They worked around our trading hours with minimal disruption. Outstanding quality from start to finish.
The basement conversion exceeded all expectations. The team dealt with complex groundwork issues professionally and the result is a beautiful extra floor to our home. Highly recommended!