Exceptional Craftsmanship, Honest Service & Quality You Can Trust.
With over 15 years of experience, JSTM Construction delivers high-quality house extensions, renovations, and architectural builds across London. We take pride in clear communication, honest pricing, and outstanding finishes.
Continuous prime London operations since 2008
Extensions, renovations & period homes
Comprehensive public & employer liability
Projects delivered on agreed schedule
Building Beautiful London Homes With Care & Precision
JSTM Construction was founded with a clear goal: to make home building and renovation a positive, transparent experience for London homeowners.
Too often, building projects suffer from unexpected cost increases, poor communication, and missed deadlines. We do things differently. We provide clear, itemized quotes from day one, set realistic schedules, and stand behind our work with a 10-year guarantee.
Every project is managed on-site by an experienced project manager who coordinates all trades, keeps you informed with regular updates, and ensures work is carried out to the highest standard.
“Building or extending your home should be exciting, not stressful. We treat every property with the utmost care, communicate openly, and deliver work we are truly proud of.”
Zero Hidden Variations
Detailed, fixed-price quotes with full cost transparency. Every item is agreed before we start, so there are no unexpected extras.
Dedicated Site Manager
A dedicated project manager on-site throughout your build. Your single point of contact, always available to keep you updated.
Architectural Collaboration
We work closely with your architect, structural engineer, and interior designer to build your plans with complete accuracy.
10-Year Work Guarantee
Insurance-backed warranty supported by the Federation of Master Builders (FMB), giving you lasting peace of mind.
How We Deliver Quality on Every Build
We follow clear, proven building standards to ensure your home is safe, structurally sound, and beautifully finished.
Strict Health & Safety
Full compliance with UK building safety standards on every project. Clean, safe, and organized worksites from start to finish.
In-House Specialist Trades
We employ qualified, experienced tradespeople including Gas Safe heating engineers, NICEIC certified electricians, and master carpenters.
Regular Progress Updates
Regular photo updates, progress reports, and site walkthroughs so you always know exactly how your build is progressing.
Snag-Free Handover
A thorough quality inspection before handover to ensure every detail meets our high standards before you move back in.
Meet Our Leadership & Building Team
Our directors and senior managers have decades of combined construction experience across London, bringing practical expertise to every project.
Julian Davies
Founder & Managing Director
Over 24 years of experience leading high-end residential renovations, house extensions, and bespoke builds across London.
Marcus Sterling
Head of Structural Engineering
Chartered Structural Engineer specializing in structural steelwork, foundations, party wall matters, and load-bearing alterations.
Elena Rostova
Director of Architectural Design
Experienced architect with extensive knowledge navigating London planning permissions, building control, and conservation areas.
David Chen
Head of Joinery & Finishes
Leads our custom joinery team, crafting bespoke fitted wardrobes, staircases, kitchen cabinetry, and custom woodwork.
Certified by Leading UK Building & Safety Bodies
We are proud members of respected industry associations, ensuring all our work complies with the highest UK standards.
Vetted & Inspected Builders
Government Endorsed Quality
Certified Heating & Gas
Certified Electrical Works
Clean & Respectful Sites
Based on 140+ verified London homeowner and client reviews
Book a Free Consultation & Site Visit
Speak directly with our team about your project ideas. We offer free site surveys, budget advice, and friendly guidance.
Registered Headquarters
JSTM Construction • Suite A204, 2nd Floor, Vista Centre
50 Salisbury Road, Cranford, Hounslow TW4 6JQ, UK
Available for in-person architectural consultations
Request a Free Consultation
Share a few details about your project and we will contact you within 24 hours.