Business Details
14 Years
experience
Emergency
services
Expert Construction Services in London
Established in 2012, Csmanltd has built a reputation as a trusted construction specialist in London and the Home Counties. Our team of engineers, designers, and contractors deliver comprehensive solutions including basement construction, underpinning, piling, demolition, and structural engineering. With over a decade of experience, we combine technical expertise with practical execution to provide cost-effective, compliant, and durable construction services.Our approach prioritises safety, transparency, and client collaboration, ensuring projects meet regulatory standards while addressing individual client needs. We work directly with developers and homeowners, offering end-to-end project management from initial design to final completion.
Services
Basement Construction
Underpinning
Demolition
Piling
Structural Engineering
Groundworks
Asbestos Removal
Super Structure
Details
- Year established: 2012
Highlights and features
- 12+ years of experience in London construction projects
- Offer design-and-build services with in-house engineers
- Prioritise safety and compliance with UK regulations
- Provide cost-effective solutions for developers and homeowners
- Handle projects from initial planning to completion
Associations and certifications
- ISO 9001
- ISO 14001
- CHAS
What people say
Expertise in basement conversions
Professional underpinning solutions
Timely project delivery
Strong safety focus
Transparent pricing
Services
Basement Construction
We specialise in creating additional living or commercial spaces through basement construction. Our services include excavation, waterproofing, and structural reinforcement. Projects range from under-house basements to garden-level extensions, all designed to meet UK building regulations. We handle both residential and commercial developments across London.
Underpinning
Our underpinning solutions reinforce existing foundations for structural stability. We use traditional box underpinning and mini-pile methods to support buildings requiring additional loads or affected by ground movement. Services include geotechnical surveys, party wall agreements, and compliance with London planning requirements.
Demolition
We provide controlled demolition services for residential and commercial properties. Our scope includes soft strip demolition, high street clearance, and multi-storey building dismantling. We manage asbestos removal, waste disposal, and site preparation while adhering to UK safety and environmental regulations.
Piling
Our piling services deliver deep foundation solutions for challenging ground conditions. We offer CFA, SFA, and mini-piling techniques suitable for residential extensions and large-scale developments. Projects include load-bearing calculations, geotechnical analysis, and compliance with British standards for structural integrity.
Structural Engineering
We provide engineering solutions for new builds and renovations. Our services cover reinforced concrete frames, steel structures, and temporary works. We ensure compliance with UK building codes through detailed calculations, material specifications, and on-site supervision for commercial and residential projects.
Questions
What construction services do you offer in London?
We specialise in basement construction, underpinning, demolition, piling, and structural engineering for residential and commercial properties across London.
Do you handle both residential and commercial projects?
Yes, we work with homeowners on basement conversions and developers on large-scale construction projects, including structural engineering and groundwork.
Are your services compliant with UK regulations?
All our work meets UK building codes, including safety standards, planning permissions, and environmental requirements for construction in London.
How much does basement construction cost in London?
Basement conversions typically range from £2,500 to £5,000 per square metre, depending on complexity, depth, and required structural work.
Do you provide emergency demolition services?
Yes, we offer urgent demolition services for properties requiring immediate clearance, with safety assessments and controlled dismantling procedures.
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