Since 2005, GBG Building Services has delivered high-quality refurbishment and restoration projects for prime residential properties across Central and West London and Surrey. We work on architect-designed projects, period houses and listed buildings, with typical construction budgets ranging from £500,000 to £5 million.
Led by Director Mariusz Gawecki BSc (Hons) MCIOB, we act as the main contractor for private clients, family offices, developers and their design teams. Mariusz personally oversees every project, supported by a dedicated site manager and a trusted team of skilled craftspeople and specialist trades. 

What we do

• Hands- on Project Management
• Full refurbishment and reconfiguration of prime houses and apartments 
• Restoration of period and listed properties
• Extensions and structural alterations
• Manufacturing bespoke kitchens and furniture, joinery 
• Integration and improvment of M&E, smart-home and AV systems
• Soundproofing

Recent work

• St George's Hill, Surrey – complete 600sqm residence refurbishment with bespoke joinery, bronzed metal detailing and marble and quartzite finishes, delivered with a leading international architectural studio.
• Kensington Green, W8 – Full internal renovation of a 140 sqm apartment in a Grade II Listed building close to this private gated community
• Notting Hill – Restoration to all facades and internal refurbishment
• Many others

How we work

We offer detailed and realistic pricing, budgets, and programmes. Discreet, respectful sites. Clear weekly reporting. Calls returned within two hours.

"Mariusz and the team delivered the project on time, on budget and to an exceptionally high standard. In our experience with luxury construction companies, this is rare." – Stefan, private client.

We welcome early involvement at the design stage and would be delighted to work with you on your next project.

Contact Mariusz directly: 07917876080 [email protected]