Our Services

Construction and bespoke renovation
services in London for:

How we deliver your project

Project management

Your project is led forward and personally supervised by Mariusz Gawecki, our company director. He has over 20 years of hands-on experience in successfully delivering both private and hospitality refurbishment projects. He is your single point of contact throughout your London project renovation.

Mariusz Gawecki and Eric Gawecki- owners of GBG Building Services ltd

Quality control

You expect the best and we are here to deliver it consistently. We meet and exceed the highest standards. We have a passion for architectural restoration, vast experience of unique finishes, and a keen eye for detail. Our perspective is to look at projects not only with a view to delivering long-lasting results, but also visually appealing features.

Luxury apartment in Knightsbridge - recpection room with two green sofas

Mechanical & Electrical (M&E)

Behind the walls of your perfect home lies kilometers of electrical cables and copper pipes that feed your entire comfort and entertainment systems.

We take enormous care to design these systems and fit only the highest quality components, which have been meticulously tested for snag-free completion and long-lasting reliability.

plant room two boilers and hot water tank
Apartment in St Johns Wood - Liquid metal bespoke joinery dressing room dark

Bespoke furniture

With the ultimate craftsmanship, your project will benefit from the same great attention to detail in the design and manufacturing of our kitchens and furniture. We specialize in delivering truly bespoke solutions with unusual finishes, such as metal inlays, liquid metal, fabrics, or gilding.

Health & Safety

We place great emphasis on planning works carefully and patiently,  then executing them safely. Our sites are well looked after clean zones with strict no-smoking policies.

Each project has a dedicated H&S supervisor regularly visiting the site to ensure compliance with regulations.

man working at height with safety harness


We care about the environment. In this day and age, being environmentally friendly is crucial for every business operation. From sourcing FSC certified timber, using safe paint, dust control, and reducing our carbon footprint by limiting site deliveries through proper planning, to the proper disposal and recycling of rubble and materials to reduce waste.



We are here to stay. You can enjoy hassle-free aftercare and support from us when your project has ended, and even after your twelve month warranty period. We are ready to assist, whatever your needs.

two shaking hands


Our offer in one place

Feel free to contact us for a digital version immediately,
or request a printed copy of our brochure.

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    Bespoke joinery - hand scraped oak vaneered panels and bronze custom made handle

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