A trusted local team delivering extensions, loft conversions, renovations and bespoke carpentry across South West London and Surrey. Fully insured and proud of every job we finish.
From full home extensions to bespoke fitted joinery, we handle every stage — design, build and finish — with one accountable team.
Single & double-storey, side-return and wrap-around extensions that add space and value — managed from foundations to finish.
Turn unused roof space into a bright bedroom, office or en-suite. Dormer, hip-to-gable and Velux conversions fully project-managed.
Renovations, structural alterations, groundworks and full refurbishments — reliable, tidy and built to last.
Fitted wardrobes, staircases, kitchens, alcove units and hardwood joinery — crafted and installed to a flawless finish.
Complete supply-and-fit refurbishments including tiling, plastering, plumbing and electrics coordinated by one team.
From small repairs to ongoing landlord and commercial maintenance — a builder you can call and rely on.
BenMar Construction Ltd is a trusted construction company dedicated to delivering high-quality building solutions across residential, commercial and industrial sectors. We combine technical expertise, skilled craftsmanship and a client-first approach to deliver projects that exceed expectations while maintaining the highest standards of safety, quality and efficiency.
No pushy sales, no hidden costs — just honest advice, clear pricing and craftsmanship we're happy to put our name to. Every project gets a single point of contact and a written quote before any work begins.
Marius Beniusis is the Chief Executive Officer of BenMar Construction Ltd, providing strategic leadership and driving the company's vision for excellence in the construction industry. With a strong commitment to quality, integrity and innovation, he leads the organisation in delivering construction projects that consistently meet the highest standards of workmanship, safety and client satisfaction.
Under his leadership, BenMar Construction Ltd has built a reputation for professionalism, reliability and delivering projects on time and within budget. Marius works closely with clients, consultants and project teams to develop lasting partnerships and ensure every project is completed to exceptional standards.
His leadership philosophy is centred on transparency, continuous improvement and sustainable business growth. By fostering a culture of collaboration, accountability and excellence, Marius has positioned BenMar Construction Ltd as a trusted partner for residential, commercial and industrial construction projects.
A selection of our recent builds across South West London and Surrey — from Richmond and Wimbledon to Banstead, Chiswick, Epsom and Motspur Park. Click any photo to enlarge.
Completed extension — Richmond
Side extension — Banstead
Garden extension — Chiswick
Rear extension & decking — Motspur Park
Garden room — Raynes Park
Period property build — Epsom
Open-plan interior — Raynes Park
Bathroom refurbishment — Wimbledon
Fitted wardrobes — Wimbledon
Walk-in dressing room — Wimbledon"From the first quote to the final clean-up they were professional, tidy and completely reliable. Our extension is exactly what we hoped for."
"They tackled the build really efficiently given how tight the space was to work in, and the custom cabinets they made are superb. Big thumbs up to Marius."
"I've used a lot of builders over the years and these are by far the best. Genuinely care about the work. Wouldn't use anyone else."
Tell us what you have in mind and we'll arrange a free, no-obligation site visit and written quote.
Get Your Free QuoteProudly serving South West London and Surrey, including:
Call, email or send us a message and we'll get back to you within one working day.
