ESTABLISHED & TRUSTED
Constructing quality spaces since 2015.
We are a Glasgow-based design & build company dedicated to transforming homes with precision craftsmanship and transparent project management.
Whether you’re looking to extend your living space, convert a loft, or fully refurbish your property, our experienced team ensures a seamless process from concept to completion.

Our Mission
We build the spaces that define your lifestyle and enhance your comfort.
Our Vision
To be Glasgow most trusted construction partner, delivering bespoke extensions and conversions through transparent communication, expert craftsmanship, and a commitment to excellence in every detail.

WHY CHOOSE US
The LK Design Standard
Detailed Specification
Clear, itemized quotes with no hidden costs or surprises.
25-Year Warranty
Comprehensive insurance-backed protection for peace of mind.
Customer Focus
Dedicated project manager for every build, start to finish.
Competitive Pricing
High-end quality finishes at unbeatable market rates.
Expert Craftsmanship
Skilled tradespeople with years of experience in London homes.
On Time Delivery
Efficient project management to meet agreed deadlines.
Full Accountability
We handle everything: design, planning, build, and sign-off.
Fully Accredited
Trustmark & FMB approved standards for safety and quality.
Our Testimonial
Trusted by Homeowners Across London
Homeowner, Ealing
"We hired them for a rear kitchen extension. Despite the tight access to our garden, they managed everything perfectly. The project was completed on time and exactly on budget. Highly recommended for complex London builds."
Property Owners, Fulham
"Exceptional attention to detail. We needed a full refurbishment of a Victorian terrace, including new electrics and plumbing. The communication was excellent throughout, and the final result exceeded our expectations."
Investor, Kensington
"A truly professional construction company. From the initial quote to the final handover, everything was transparent. No hidden costs, just honest work and great craftsmanship."
Homeowner, West London

Get answers to your queries
General Questions
We bring together all the essential building services you need under one roof. From accurate surveys and 3D modeling to planning submissions, structural engineering, and the final build. We are affiliated with Trustmark/FMB and carry comprehensive insurance, ensuring a stress-free experience from start to finish.
We operate across London and Greater London, including North, West, East, and South West London. Whether you are in Ealing, Kensington, or the outskirts, our teams are ready to assist with your loft conversion or extension.
We specialize in residential House Extensions, Loft Conversions (Dormer, Mansard, Hip-to-Gable), and full Property Refurbishments. We also handle commercial projects and new builds.
Project Planning & Costs
A typical loft conversion in London costs between £18k and £80k, depending on the size and type (e.g., Velux is cheaper than Mansard). The process usually takes 4 to 8 weeks. We provide a detailed specification and fixed price quote before starting.
You are not legally required to hire an architect, but it is highly recommended for major projects like extensions. An architect ensures your design meets all legal requirements and maximizes space. We can provide full architectural design services as part of our package.
Many loft conversions (like Velux or simple Dormers) fall under "Permitted Development" and do not require full planning permission, provided they meet certain limits. However, we always recommend obtaining a Lawful Development Certificate. We handle all planning applications for you.
Construction & Process
Yes, for almost all structural work (like removing chimney breasts or adding a loft), a structural engineer is required to calculate the weight loads and specify steel beams. This is crucial for Building Regulations approval.
For loft conversions, yes – most of the work happens from the scaffolding outside, with minimal disruption until the stairs are installed. For major ground floor extensions or full refurbishments, we may recommend moving out temporarily for your comfort and safety.
A typical rear or side extension takes between 10 to 14 weeks, depending on complexity. We provide a clear schedule at the start and keep you updated weekly on progress.

"LK Design Construction transformed our dusty attic into a stunning master bedroom. The team was punctual, polite, and the finish quality is hotel-standard. They handled all the council permits too, which was a huge relief."