Construction Company North London

Best Builders for your New Home and Extension Projects in North London

Marriott is a construction company in North London. We offer a range of building services like loft conversions, new builds and house extensions in North London. We also cover Hertfordshire. Our clients can choose from two types of construction packages. At the Design and Build stage, our architect prepares your structural and architectural drawings. So they can secure permission from your Local Authority. After that, our builders in north London will proceed and complete the construction. Marriott interior designers can help you create bespoke house interiors. Designers will create a design to match your personality and style. Our build only package is for those who already have hired an architect to do the design. Marriott will build your new home or house extension following your existing plans and specifications. Our building services include project management, ensuring smooth cooperation between builders and contractors. We work under insured conditions and with the accreditation of the Federation of Master Builders. You can be confident in the quality of the building work we do. Marriott Construction provides all clients with up to a fifteen-year structural warranty. We have built a lasting relationship with our clients, who are happy to recommend our design, management and builder services.

Large luxury new build house in North London

New Home Construction

Whether you are planning to build a traditional bungalow or a luxury mansion, our North London builders can help you build your perfect house.

Large rear home extension with a shaker kitchen in North London

Kitchen Extensions

If your home is in need of a new larger kitchen, but you do not want to move, building a house or kitchen extension could be the perfect solution.

Luxurious interiors of a North London house after renovation

House Renovations

If your home requires renovation. Our experts interior designers, floor fitters and painters can help you design and create the perfect interiors.

New Build and Kitchen Extension Case Studies

Do you want to build a bespoke new home? Or redesign your existing property by adding a house extension or a loft conversion? Our skilled team of creative designers, and builders in North London, offer the perfect solutions for every project. We work with our clients to ensure that they get the new home, extra space or the brand new kitchen they have been envisioning. Get benefit from our extensive experience in luxury homes and house extensions. Request a free consultation today, and we will advise you on how to best proceed with your project.

Single storey rear house extension in North London

Large House Extension in North London

After building and completing this luxury rear house extension with bespoke kitchen. Our team of expert London builders renovated the interiors of every room in the house.

Luxury new build house in Hertfordshire built by a London construction company

Luxury New Home in Hertfordshire

This bespoke mansion, designed by Stanley Architects in Bushey, Herts. Built from start to finish by our London building company using top quality building materials.


I have been using Frank and his team for many years, and am always impressed by their professionalism and attention to detail. They are highly skilled and can do any job, big or small. They actually built our entire house from scratch a few years ago, and now we use them for property maintenance jobs around the house and garden. They are highly reliable, trustworthy, punctual, neat and tidy, and can do anything. Always my first port of call if there is anything to build or fix in the house. Highly recommend.


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  • 183 Edgware Road
  • London
  • NW9 6LP
  • 2 Athenaeum Road
  • Whetstone
  • N20 9AE

Book a site visit - 0748 529 8186
Other enquiries - 0208 205 8173
Hours: Mon to Fri 09:00 - 17:00

We operate across North London, North West London and Hertfordshire. Including BarnetBushey, Camden, Edgware, Finchley, Hampstead, Hendon, IslingtonMill Hill, Potters BarStoke Newington and Watford