London's Basement Specialists
Expert basement construction, waterproofing, and underpinning across London. Transform your space with trusted professionals.
25+ Years Experience
Trusted specialists with proven track record
Waterproof Guarantee
BS 8102:2022 compliant systems
Full Service
Construction to completion, ready for fit-out
About
Delta Force Group Ltd brings over 25 years of specialized experience in basement construction across London. We build strong, secure, and waterproofed basements for homes and properties.
Complete basement solutions from start to finish
BS 8102:2022 compliant waterproofing systems
Local London company, reliable and trusted
Services
Complete basement solutions from excavation to waterproof shell
Basement Construction
Complete new build basements and under existing properties
- • Precision excavation
- • Reinforced concrete structure
- • Quality formwork techniques
Waterproofing
BS 8102:2022 compliant systems with lifetime guarantee
- • Cavity drain membranes
- • Sump pump systems
- • Resin injection sealing
Underpinning
Foundation stabilization and structural reinforcement
- • Mass concrete underpinning
- • Mini-piled systems
- • Helical piling solutions
Groundwork
Comprehensive groundwork and drainage solutions
- • French drain installation
- • Soil management
- • Drainage channels
Structural Repairs
Crack injection and carbon fiber reinforcement
- • Epoxy injection systems
- • Carbon fiber strengthening
- • Steel plate installation
Sump & Pump
Integrated moisture management systems
- • High-capacity pumps
- • Battery backup options
- • Continuous operation
Sectors
Trusted across residential, commercial and development sectors
Residential
London homeowners creating extra living space and adding value
Commercial
Office basements and retail spaces across London boroughs
Developers
Partner with construction companies for basement shell packages
Luxury Homes
High-end basement conversions with premium finishes
Listed Buildings
Specialist heritage basement work with conservation expertise
Garden Basements
Under-garden construction maximizing property potential
Why Choose Us
London's trusted basement specialists with proven results
Years Experience
Over two decades of hands-on basement construction expertise
Fully Guaranteed
Quality workmanship backed by comprehensive guarantees
Waterproof Specialists
BS 8102:2022 compliant systems with lifetime protection
Local & Reliable
London-based company you can trust with your property
Team
Meet our expert basement construction specialists
Senior Project Manager
25+ Years Experience
Oversees every project from initial survey to completion
Waterproofing Specialist
Certified Expert
BS 8102:2022 compliance and advanced system installation
Structural Engineer
Chartered Professional
Designs safe, durable basement structures for every project
Underpinning Expert
Foundation Specialist
Stabilizes existing properties for basement construction
Site Supervisor
Operations Manager
Ensures smooth daily operations and quality control
Customer Relations
Project Coordinator
Your dedicated contact throughout the entire process
Testimonials
What our London clients say about our basement work
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"Delta Force transformed our damp basement into a beautiful family room. Professional, reliable, and kept us informed throughout. Highly recommend!"
Sarah M
Kensington Homeowner
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"Exceptional basement conversion for our Victorian terrace. The team handled all permissions and delivered on time. Five stars!"
James L
Islington Property Owner
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"Professional underpinning saved our period property. Delta Force's expertise prevented structural issues. Outstanding work."
Emma W
Chelsea Homeowner
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"Garden basement gym exceeded expectations. Waterproofing is perfect after 2 years. Professional service throughout."
David R
Hampstead Resident
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"Delta Force delivered our luxury development basements on schedule. Quality workmanship and excellent communication."
Michael T
Property Developer
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"Complete basement refurbishment with new drainage. No more damp issues. Professional, reliable, and fairly priced."
Lisa K
Notting Hill Homeowner
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"Underpinning and basement extension transformed our home. Delta Force handled everything professionally. Highly recommended."
Robert M
Fulham Homeowner
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"Perfect basement wine cellar installation. Temperature control works flawlessly. Delta Force delivered beyond our expectations."
Sophie B
Westminster Homeowner
Contact
Ready to transform your basement? Get your free site survey today
Call Now
07405 046475
info@deltaforcegroupltd.com
Service Area
London & Greater London
Free Site Survey