High-value extensions, renovations and structural work for period properties across Hampstead, Highgate and Central London — delivered by our own trades, start to finish.
Completed refurbishmentEvery job below is handled directly by our own teams — no subcontracting out the parts we can't stand behind.
Whole-property refurbishments that keep what makes a period home worth having — the cornicing, the proportions, the character — while modernising everything you can't see.
View service →Side-return, rear and double-storey extensions engineered specifically for North London's period properties — planned around your home's existing structure, not against it.
View service →Loft conversions that add real, usable headroom and living space — not just a staircase to a space you still have to duck through.
View service →Load-bearing wall removal, structural steel installation and underpinning — engineer-signed, and planned around your property's actual construction, not a generic assumption.
View service →Re-roofs, repairs and ongoing maintenance across slate, tile and flat roofing — most call-outs assessed within 48 hours of getting in touch.
View service →Whole-house renovations planned and project-managed by one team from the first sketch to the final handover — not handed between contractors along the way.
View service →Rewires, consumer unit upgrades and certified electrical work, tested and signed off to current UK wiring regulations on every job.
View service →From leak repairs to full re-piping, the same plumbers see the job through from quote to completion — not a rotating cast of subcontractors.
View service →External rendering and brickwork repair that fixes what's actually causing the damage, not just what's visible on the surface.
View service →Patios, driveways and outdoor hard landscaping designed to complement the main build — usually the finishing touch on a larger renovation or extension.
View service →Kitchen design, plumbing, electrics and fit coordinated as one project by our own trades — not three separate contractors you have to manage yourself.
View service →Interior and exterior decoration — usually the final stage of a wider renovation, but just as happy to take on as a standalone job.
View service →Office, retail and mixed-use commercial renovations, run with the same fixed-quote, single-point-of-contact approach as our residential work.
View service →Sash window restoration, bifold doors and secure external doors, fitted with period properties and conservation requirements in mind.
View service →Retail and hospitality shopfitting delivered to a fixed timeline, planned around your trading calendar rather than ours.
View service →Side-return, rear and double-storey extensions from a builder actually based in Hampstead — not a company that just covers the postcode. Twenty years working these streets, their conservation rules and their period foundations.
View service →The same site manager who quotes the job runs it. No handoff to a different crew halfway through.
Fixed pricing before work starts, with variations agreed in writing — not added to the invoice afterward.
Most of our work is in Victorian and Edwardian properties — we plan around old walls, not against them.
Public liability cover and trade-specific certification on every project we take on, no exceptions.
Discover the genuine delight expressed by our valued customers as they share their positive experiences with GML Construction, highlighting the exceptional quality and professionalism that sets us apart in the construction industry.
GML Construction exceeded my expectations! From the initial consultation to the final nail, their team demonstrated unmatched professionalism and delivered our project on time and within budget. I highly recommend GML for anyone seeking top-notch construction services.
"Working with GML Construction was a pleasure. The team's attention to detail and commitment to quality craftsmanship ensured that my dream home became a reality. I appreciate the transparency, communication, and dedication throughout the entire construction process."
"GML Construction is the epitome of reliability. Their skilled team managed our commercial project with precision and efficiency. The level of expertise they brought to the table was impressive, and I wouldn't hesitate to engage them for future construction endeavors. A truly commendable company!"
