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Expert Building Services in London
Selcom Building Services has over two decades of expertise in delivering high-quality building solutions across London and the South East. Specialising in loft conversions, extensions, kitchen and bathroom installations, and commercial projects, we combine technical proficiency with client-focused service. Our team of certified professionals ensures every project meets rigorous standards, offering a 10-year guarantee on workmanship.

From initial planning to completion, we prioritise collaboration, transparency, and adherence to Gas Safe and NICEIC-approved practices. With a reputation for reliability and precision, we transform properties while maintaining seamless communication and minimal disruption.
Services
Loft Conversions Extensions Kitchen Installations Bathroom Fitting Commercial Refurbishments Roofing Plumbing Electrical Services
Highlights and features
  • We have over 20 years of experience in residential and commercial construction.
  • We provide free consultations and feasibility surveys for all projects.
  • We liaise with planning authorities on your behalf to ensure compliance.
  • All work comes with a 10-year guarantee for complete peace of mind.
  • Our certified plumbers and electricians meet Gas Safe and NICEIC standards.
Associations and certifications
  • Gas Safe
  • NICEIC
Services
Loft Conversions
We design and execute bespoke loft conversions tailored to your property's structure and your lifestyle needs. Our process includes feasibility assessments, planning permissions, and seamless integration with existing architecture. With a 10-year guarantee on all workmanship, we ensure durable, value-adding transformations that maximise space and natural light.
Extensions
From single-storey to full structural extensions, we deliver custom solutions that enhance living space and property value. Our end-to-end service covers design consultation, local authority liaison, and precision construction. We specialise in blending new builds with existing structures while adhering to strict safety and quality standards.
Kitchen Installations
Our skilled carpenters install bespoke kitchens to match your design preferences, whether modern or traditional. We work with all major brands and handle complete installations, including appliances, flooring, and tiling. Old units are removed efficiently, ensuring a hassle-free process with minimal disruption to your home.
Bathroom Fitting
We create functional, luxurious bathrooms tailored to your space and budget. Our services include layout planning, wet room installations, and fitting of high-quality fixtures. With expertise in both private and commercial projects, we ensure water-resistant finishes and compliance with building regulations.
Commercial Refurbishments
We manage full-scale commercial refurbishments, including hotels, offices, and retail spaces. Our structured approach covers project management, asbestos removal, and compliance with health and safety standards. Recent projects include maintenance for Crystal Palace Football Club and asbestos abatement in housing estates.
Questions
What areas do you cover?
We operate across London, Kent, Surrey, and Hertfordshire, with a focus on residential and commercial projects in both urban and suburban settings.
Do you offer free consultations?
Yes, we provide free initial consultations and feasibility surveys to assess your project's viability and planning requirements.
Are your tradespeople certified?
All our plumbers are Gas Safe registered, and electrical work is NICEIC-approved through our certified partners.
What guarantees do you offer?
We provide a 10-year guarantee on all building workmanship, ensuring long-term quality and client confidence.
Can you handle planning permissions?
Yes, we liaise directly with local planning authorities to secure necessary approvals for your project.
Reviews (5)
James D.
Dec 19, 2021 Report
Critical:Quality,Value
You will regret using them. terrible company. Once they have your money they dont care. Building control say they are the worst loft Company around.
Ross Mitchell
Jul 03, 2020 Report
Positive:Professionalism,Quality
Selcom completed a loft extension for us in 2019. They did a great job, everyone was really nice and friendly. They did a great job and worked with us to make sure we got what we wanted and quickly resolved any issues etc. About a year later and no issues to report all still looks great.
Adar Cohen
Dec 12, 2019 Report
Super unreliable company - total time wasters! They came over to give me a quote, took some measurements and then never got back to me despite chasing them several time. Always said I'll have it soon. The following year I tried again, they always said they'll call me back to book an appointment but never did. In the end I got them to make one and the day before the appointment they cancelled and said they are too busy to come over.
Lisa Fenwick
Aug 29, 2018 Report
Excellent building company. Very happy with our 2 loft conversions . A Polite discreet and flexible bunch of professional builders.
Paul Conning
Dec 05, 2016 Report
Dreadful, the builders were fantastic, the roofers terrible. Our loft was signed over on march 2014 and after numerous leaks they replaced it with a new one. I'm already on my 3rd leak. The roof holds about an inch of water for about 3/4 days after rain. The roofer came this morning to fix the latest leak and i asked him why he did'nt put a fall or gradient on when he put the second roof on he said he was'nt a carpenter. The roof is the main part of having a loft, if this keeps leaking it defeats the object.