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Business Details
38 Years
experience
Expert Construction Services in London
Dendale Construction has been a trusted builder for over 30 years, serving both commercial and residential clients across London and the Home Counties. Established in 1988, we specialise in delivering turnkey construction solutions, from small repairs to large-scale new builds, extensions, and refurbishments. Our approach prioritises client relationships, understanding individual needs to create lasting partnerships rather than project-based interactions. We combine cutting-edge technology with skilled tradespeople to ensure exceptional finish quality, adhering to strict safety protocols and ethical business practices.

All completed work is accredited, insured, and guaranteed, reflecting our commitment to integrity and continuous improvement. Our team is CRB-checked and fully qualified, with expertise spanning heritage buildings, eco-construction, education facilities, and commercial projects. We manage every aspect of property maintenance, repair, and development, offering a single point of contact for clients while maintaining rigorous standards of professionalism and customer care.
Services
Residential Extensions Commercial Refurbishments Heritage Repairs Eco Construction Project Management Property Maintenance Design & Build Listed Building Work Education Facilities Retail Fit-Outs
Details
  • Year established: 1988
Highlights and features
  • We have over 30 years of experience in residential and commercial construction.
  • All work is accredited, insured, and guaranteed for quality assurance.
  • We implement innovative technologies and methods for superior results.
  • Our CRB-checked, qualified team ensures professionalism and safety.
  • We offer guaranteed workmanship with a 10-year insurance-backed warranty.
Associations and certifications
  • FENSA
  • GGF Insurance
Services
Residential Extensions
We design and build custom residential extensions, including loft conversions, basement developments, and full-width rear additions. Our projects incorporate energy-efficient materials, bespoke kitchen installations, and structural enhancements while maintaining compliance with heritage requirements where applicable. Clients benefit from seamless project management, from initial design through to handover, with a focus on maximising living space and property value.
Heritage Repairs
Specialist restoration services for heritage and listed buildings, including stucco repairs, stone masonry, and period-appropriate joinery. We employ traditional craftsmanship techniques while integrating modern safety standards. Our team works within conservation areas and SSSIs, ensuring all interventions preserve historical integrity while meeting contemporary functionality requirements for private and public clients.
Eco Construction
Energy-efficient construction solutions incorporating air-source heat pumps, solar PV systems, and advanced insulation techniques. We advise on EPC compliance, thermal performance improvements, and carbon footprint reduction strategies. Our eco-builds include new constructions and retrofit projects that combine environmental responsibility with cost savings through reduced energy consumption for residential and commercial clients.
Commercial Refurbishments
Full-scale commercial refurbishments for offices, retail spaces, and public facilities. Services include structural modifications, mechanical and electrical upgrades, and compliance with accessibility standards. We manage projects from concept to completion, minimising business disruption through phased works and offering dilapidation management services for leasehold properties.
Project Management
Comprehensive project management covering cost analysis, site supervision, and contractor coordination. We handle both residential and commercial developments, ensuring adherence to timelines and budgets while maintaining quality standards. Our services include risk assessment, procurement of materials, and compliance with building regulations across new builds, refurbishments, and maintenance contracts.
People
Dennis Swain
Managing Director
With over three decades of construction industry leadership, Dennis Swain oversees Dendale Construction's strategic direction. He champions a culture of teamwork and accountability, ensuring client satisfaction through rigorous quality control and innovative problem-solving approaches that have sustained the company's reputation since 1988.
Questions
What types of construction projects does Dendale specialise in?
We specialise in residential extensions, commercial refurbishments, heritage building restoration, eco-construction, and project management across London and the Home Counties.
Are your construction services accredited?
Yes, we are FENSA-registered with a 10-year GGF Insurance-backed warranty for our workmanship and installations.
How long does a typical extension project take?
Project timelines vary by complexity, but most residential extensions complete within 12-16 weeks from planning approval to handover.
Do you work on listed buildings?
Yes, we have extensive experience in repairing and renovating heritage and listed buildings using appropriate materials and techniques.
Can you help with commercial property maintenance?
We provide comprehensive facilities management services for commercial properties, including reactive repairs and planned maintenance programmes.
How do I request a project consultation?
Contact us via phone or our website's project enquiry form to arrange a free initial consultation with our construction specialists.