Epsom & Ewell · Rear Extensions
A single storey rear extension with an open-plan kitchen and living space, opening onto a new terrace.
Design & build · Groundworks · Drainage · Structural engineering across South West London & Surrey
Design & build · Groundworks · Drainage · Structural engineering across South West London & Surrey
AMTA ARGC · Basement Excavation
Basement dig-outs with temporary works, underpinning and waterproofing designed in-house.
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Overview
We are basement excavation contractors for new basements and lowered floors. Basement work depends on good temporary works and sequencing, so our engineers design the propping, underpinning and retaining walls before excavation starts.
We cover 9 councils across South West London and Surrey, and every project is run by one team from survey to sign-off. This service is part of our groundworks work, and it is often combined with foundations.
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What is included
01
Propping and sequencing designed to keep the house stable.
02
Existing walls underpinned in planned bays.
03
Spoil removed by conveyor or grab lorry.
04
Reinforced slab, retaining walls and waterproofing system.
How we work
One team, one point of contact and one programme, from the first site visit to the completion certificate.
01
We visit, measure up and agree the brief, budget and timescales.
02
Drawings and structural calculations by our own engineers.
03
Planning or permitted development, building regulations and party wall help.
04
Our site team builds, with one contact throughout.
05
Final inspections, completion certificate and handover.
Recent projects
Epsom & Ewell · Rear Extensions
A single storey rear extension with an open-plan kitchen and living space, opening onto a new terrace.
Croydon · SUDS
New storm and foul drainage runs, inspection chambers and a geocellular attenuation tank for a residential scheme.
Costs and timescales
Every project is priced after a survey, because ground conditions, structure and finishes vary from house to house. We give you an itemised quote and a written programme, so you know what you are paying for and when each stage happens.
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Areas we cover
We work across nine councils in South West London and Surrey. Choose your area to see local projects, planning notes and how we work there.
Richmond, Twickenham, Teddington, Barnes, Kew
Kingston, Surbiton, New Malden, Tolworth
Wimbledon, Merton Park, Raynes Park, Morden, Mitcham
Tooting, Balham, Wandsworth, Putney, Earlsfield
Epsom, Ewell, Stoneleigh
Hounslow, Chiswick, Isleworth, Brentford
Ealing, Acton, Southall, Hanwell
Dulwich, Peckham, Camberwell, Bermondsey
Croydon, Purley, Coulsdon, South Croydon
Related services
Reinforced concrete frames, slabs, beams and columns for residential and commercial schemes.
Garage and basement conversions that add usable living space to your home.
FAQs
Straight answers to common questions. See all our FAQs or ask an engineer.
Most new basements do. Some boroughs also require a basement impact assessment.
Yes. Temporary works and underpinning are designed and sequenced by our engineers.
It depends on size and approvals. We give you a written programme with your quote covering design, approvals and each build stage.
Richmond, Kingston, Merton, Wandsworth, Epsom & Ewell, Hounslow, Ealing, Southwark and Croydon.
Free, no-obligation quote
Send a few details and one of our engineers will call you back to arrange a survey. Prefer to talk now? Call 020 3857 3805.