GLB PartnersConstruction & property maintenance

W1

Builders in Mayfair & Marylebone

High-end refurbishments of apartments and townhouses in Mayfair and Marylebone, planned around Westminster's rules, listed building consent and the landed estates.

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Our work in Mayfair and Marylebone

Most homes here are apartments in mansion blocks and converted townhouses, or Georgian and Victorian houses, many of them listed. Projects are usually internal and finished to a very high standard: full refurbishments, new kitchens and bathrooms, layout changes, and careful restoration of period detail.

  • Full apartment and townhouse refurbishments
  • Bespoke kitchens and bathrooms
  • Layout changes and structural alterations
  • Restoring cornicing, joinery and floors
  • Mews house refurbishments
  • Discreet, tidy sites with one point of contact

Recent work

An extension with a full refurbishment in Fulham, and a two-storey extension in a conservation area. See all projects

Extension with exposed painted beams opening onto the garden, Fulham
Before & afterRefurbishmentFulham, SW6

Side and rear extension and full house refurbishment

Comprehensive side and rear extension with complete house refurbishment featuring luxury bathroom renovation with premium fixtures, elegant tiling, and modern design.

Duration10 weeksBudget£95,000 – £120,000
Two-storey extension in West Hampstead with full-height oak-framed glazing
Before & afterExtensionWest Hampstead, NW6

Double storey extension plus internal refurbishment

A stunning contemporary two-storey extension with floor-to-ceiling glazing, bespoke timber kitchen, and complete internal refurbishment of a Victorian property.

Duration6 monthsBudget£180,000 – £220,000

Running a job in central London

A central London refurbishment is as much about logistics as building. Parking bay suspensions, delivery slots, skip licences and neighbours a party wall away all need planning, and so does the paperwork for the freeholder or estate.

We put a clear programme together before we start, keep the site clean and quiet within the permitted hours, and give you one person to deal with throughout. Where design or consents are involved, we work alongside your architect or interior designer.

Questions about building in Mayfair and Marylebone

Do you work in mansion block apartments?

Yes. We handle the licence to alter, agree working hours and lift use with the building, and protect the common parts throughout.

Can you work to an interior designer's specification?

Yes. We often build to an architect's or designer's drawings and finishes schedule, and work alongside them through the project.

Do you cover other central areas?

Yes, including St James's, Fitzrovia and Belgravia, as well as Kensington, Chelsea and Notting Hill.

How do I get a quote?

Book a free site visit online, call 0844 818 0188 or send your details on WhatsApp to 07532 669431. We come and look at the space, talk it through and send an itemised quote.

Nearby areas we cover

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What our clients say

4.9from 11 Google reviews

Read them on GoogleLeave a review

GLB has been a star find for me. The whole experience of refurbishing our property was as close to being a pleasure as building work can be! Geraldo is a super nice guy and a very good listener; he's patient and remains a calming presence even when the inevitable unexpected snag crops up.
Geraldo runs a tight ship and his team are of the same high calibre—professional, efficient, and very tidy. As a property investor, I was anxious about finding a replacement for my previous builder of many years, but GLB has filled those shoes seamlessly. His prices are very competitive, the work is outstanding, and most importantly, he delivered exactly what was promised on time. Highly recommended.

Shabs J.Google review

Geraldo and his team recently completed a full fit-out of our flat that we purchased in terrible condition. It included a complex relocation of the kitchen and boiler to create an additional bedroom and create an open plan kitchen, diner and lounge. From start to finish, Geraldo was a true professional. His attention to detail is second to none—not just in the construction, but in the administration as well. Without even being asked, he provided a complete handover pack including Building Regs, Gas Safe, and Electrical certificates, along with all appliance warranties. We used our local council for Buildings Regulations and he deftly managed all their requirements, easing the worry for us tremendously.

He was incredibly helpful during the pre-construction phase, providing all the necessary documentation to satisfy our freeholder’s requirements. Throughout the build, he suggested several clever ways to save on costs while actually improving the design and functionality of the space. He is a 'communication is key' professional who always answers his phone and solves problems with total patience and clarity. Even after the project was finished, he went out of his way to help with a minor follow-up issue. I wouldn’t dream of using anyone else for future work.

Hus H.Google review

The team did an excellent job on my refurbishment! This included installing engineered wood flooring throughout, new kitchen, new bathrooms (2+1 separate WC), underfloor heating, plastering plus many more jobs. They kept me updated of progress all along the way especially when I was away and minimised the pain of doing work while also living in the house. My first point of call if I ever needed something done.

Feyi O.Google review

GLB has worked with us for over two years, firstly doing renovations and then little “bits & bobs”. Outstanding quality, service and staying with you when others “ride off into the sunset”. Geraldo and the team come with highest recommendations and they are a true delight to work with….a firm you can trust for the long haul…no hesitations in adding a five star recommendation….and I am difficult.

James G.Google review

Geraldo built an extension to my flat, a new kitch and toilet/shower room. I am very pleased with it. He and his team were expert, informed, attentive to detail, good timekeepers - and friendly. I recommend them

John C.Google review

GLB Construction was great to work with from start to finish. The team was professional, easy to communicate with, and paid close attention to the details. The work was done on time and turned out exactly as expected. Overall it was a smooth experience and I’d definitely recommend GLB Construction to anyone looking for reliable construction work.

ArdianGoogle review

Geraldo has done various jobs for us over the years. Transforming an entire floor including 4 bedrooms and 3 bathrooms. Pergola, fencing and also roof works. Extremely good skills and very friendly. Open to suggestions and ideas. Would highly recommend.

Z. H.Google review

We had work done a while back so we can say that Geraldo’s work has stood the test of time ..no cheap materials no shortcuts…if something isnt a good idea structurally.. he will let you know…he has a very good understanding of the client’s vision..and does not shy away from starting all over if something doesnt feel right..great work

Mehreen A.Google review

"Top-notch service! I hired them for a parquet installation and I couldn't be happier. The guy running the business is young, energetic, and clearly a master of his craft. It’s rare to find such high-quality woodwork combined with great communication and fair, competitive prices in London. If you need a specialist for your house renovation, look no further!"

Blerina M.Google review

We were very pleased with Gerald's work. He displayed high levels of competence, knowledge and experience. He was reliable, friendly, and helpful. Very happy to recommend.

richdormGoogle review

Geraldo is dutiful and reliable. He had done good jobs to my two properties. I highly recommend to anyone who requires.

Shirley H.Google review
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