Business Details
Your Trusted Partner for Home Extensions in London
Established as a specialist construction company, we have dedicated our expertise to transforming homes across South West London. Our deep understanding of Victorian and Edwardian architectural styles allows us to work harmoniously with your property's unique characteristics while delivering modern, functional extensions. With a commitment to exceptional customer care, we assign a dedicated site foreman to oversee every project and ensure regular communication with our Managing Director, Roman Cmiel. As the only London-based company specialising exclusively in side returns and rear house extensions, we combine technical proficiency with a personal touch, evidenced by our reputation built through client referrals.Our TrustMark, Which? Trusted Trader, and Federation of Master Builders accreditations underscore our adherence to industry standards and client satisfaction. We prioritise transparency, offering fixed-price contracts and regular progress updates to ensure a seamless experience from initial consultation to project completion.
Services
Kitchen Extensions
Side Return Extensions
Rear House Extensions
Bespoke Extensions
Structural Design
Underfloor Heating
Plumbing Alterations
Patio Creation
Garden Walls
Rooflight Installation
Highlights and features
- We are London's only specialist in side returns and rear house extensions
- Dedicated site foreman assigned to every project for daily oversight
- Regular progress updates directly from our Managing Director
- Fully accredited by TrustMark, Which? Trusted Trader, and FMB
- Proven track record of transforming homes since 2006 (based on FMB membership criteria)
Associations and certifications
- TrustMark
- Which? Trusted Trader
- Federation of Master Builders
What people say
Excellent customer care
Professional and personable
Completed on time
Highly recommended
Great communication
Services
Kitchen Extensions
We specialise in creating light-filled kitchen extensions that maximise space and property value. Our expert team handles structural design, plumbing, and electrical work while maintaining your home's architectural integrity. Clients benefit from seamless integration with existing spaces and enhanced natural light through bi-fold doors and rooflights.
Side Return Extensions
Transform underutilised side return spaces into functional living areas. We overcome engineering challenges while preserving property character. Our process includes structural calculations, party wall agreements, and bespoke design solutions tailored to terraced and semi-detached homes across South West London.
Rear House Extensions
Expand your living space with custom rear extensions that blend modern functionality with traditional architecture. Our comprehensive service covers planning permission, structural work, and interior finishing. Clients enjoy increased property value and improved garden access through contemporary glass installations.
Underfloor Heating
We integrate energy-efficient underfloor heating systems into all extension projects. This modern solution provides even warmth distribution while maintaining clean floor aesthetics. Our installations comply with building regulations and include comprehensive warranties for long-term reliability.
Structural Design
Our in-house architectural expertise ensures technically sound designs that meet building regulations. We handle load-bearing calculations, material specifications, and coordination with utility providers. This service guarantees structural integrity while achieving clients' vision for their transformed spaces.
People
Roman Cmiel
Managing Director
With over 15 years in residential construction, Roman leads our projects with technical expertise and client-focused management. He established our company's reputation for quality through meticulous attention to detail and transparent communication throughout the building process.
Adrian
Site Manager
As lead site manager, Adrian oversees daily operations with 12 years of experience in London property renovations. His expertise in managing live-site projects ensures minimal disruption to homeowners while maintaining strict quality control standards.
Questions
Do you work on listed buildings or conservation areas?
Yes, our experience with Victorian and Edwardian properties includes projects in conservation areas. We understand the specific requirements and will guide you through the planning process.
Can I live in my home during the extension work?
Yes, we design temporary living solutions to minimise disruption. Our team creates protected zones and temporary kitchens to maintain comfort during construction.
What guarantees do you offer?
We provide a 2-year workmanship guarantee and coordinate insurance-backed warranties through TrustMark for added client protection.
How long does a typical extension take?
Most kitchen extensions take 12-16 weeks from start to finish, including structural work, plumbing, and interior finishes.
Do you handle planning permissions?
We manage permitted development applications and coordinate with local authorities to ensure compliance with all building regulations.
What sets you apart from other builders?
We're London's only specialist in side return extensions, combining architectural expertise with dedicated project management and transparent fixed-price contracts.
Reviews (2)
Sanjay Patel
May 21, 2021
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LKE have done two kitchen extensions for my family now, one for me and one for my dad which is probably enough of a positive statement. The team of builders are always on time, super polite and work extremely hard..and leave the house orderly at the end of each day. The office is always responsive to queries and questions and am very happy with the end product. Once again, thanks to Roman and the team!
Morris Zwi
Jul 02, 2020
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It was an absolute pleasure to work with Roman and his team from The London Kitchen Extensions company who recently did our kitchen extension!
Roman is highly professional, experienced and transparent in the agreement of the contract. What you see is what you get! Everything that is included in the contract is explicitly specified and any additional pieces of work are itemised as extras. He gave good advice about getting quotes from others: "Ask what is not included in the conteract."
We spoke to others and saw the work he had done for them. It was done to a high standard. They started and finished
Roman is highly professional, experienced and transparent in the agreement of the contract. What you see is what you get! Everything that is included in the contract is explicitly specified and any additional pieces of work are itemised as extras. He gave good advice about getting quotes from others: "Ask what is not included in the conteract."
We spoke to others and saw the work he had done for them. It was done to a high standard. They started and finished
