Covering a wide range of architectural styles adjusted for modern requirements


By developing a design, specific to each individual client’s needs.


Ensuring visualisation and understanding a design is provided every step of the way


To ensure the best results


From Drawing to Construction, we overview the project in all steps of building


Welcome to Lees Architects LLP

Lees Architects is an architects practice in North London. We provide a full scope of services from feasibility through to on site management for projects ranging from bespoke extensions, to new build houses to blocks of flats. Our experience and understanding of the planning and construction process through projects of varying scales ensures each client receives tailored advice to best achieve their desired outcome. From our office base in High Barnet, we provide our services throughout London, Hertfordshire and the surrounding areas. Lees Architects is registered with the RIBA and ARB.

Featured Projects

We have a huge amount of experience of both the planning system and construction industry which allows our projects to run smoothly from the outset.


Our Reputation

  • Have no hesitation in recommending Lees Architects LLP

    June 2022

    We would have no hesitation in recommending LeesArchitects LLP. Stuart Lees was full of great ideas, he listened to what we wanted and he delivered. As the build progressed, Stuart was quick to respond to any and all queries. We felt that Lees Architects were invested in our project and we are delighted with the result.

    Will & Tamsyn Noble
  • Very professional and always available to talk through problems

    April 2021

    Dealt with Sam with regards to a kitchen extension and remodelling of first floor rooms. Very professional and always available to talk through problems. I was originally hesitant to go with an architect as wanted the ease of a design and build contractor. However, Sam dealt with all aspects from drawings, to arranging structural engineer, to planning applications, build over agreements etc. I couldn’t highly recommend him enough. He realizes that is a stressful situation for homeowners and always took the time to explain things and make it a priority to get queries resolved.

    Frederick Harlley
  • Recommend them and use their services again

    October 2020

    BRILLIANT!  Intuitive and very experienced. I used them when I was planning my recently built extension.  I would not hesitate to recommend them and use their services again.

    Al Duracell
  • Can always rely on Stuart


    I have worked with Lees Architects many times and they always provide high quality, professional service. As a building contractor, I can always rely on Stuart to offer good advice and produce drawings on time and at a fair price when using him on our projects.

    Building Contractor
  • Wraparound rear and side extension, complete with loft conversion

    January 2016

    Stewart provided thoughtful drawings for this project, he matched up my requirements and ensured the plans would make the best use of the space. He managed the process smoothly through planning, and once planning was granted he produced detailed construction drawings that my builder informed me were very detailed and helpful. Stuart was always on hand for any questions and was always very quick to get back to me on any questions. The end result speaks for its self and I owe that to Stuart.

    I would highly recommend Lees Architects due to Stuarts excellent service.

    James Chamier

Lees Architects LLP are ARB and RIBA accredited

We pride ourselves on excellent customer care.

We are architects who provide a service to clients to design all types of buildings, from extensions to new build blocks of flats. A unique service for each client, bespoke to their needs.

We are at the forefront of architectural design by integrating new ideas, new materials and new methods of construction into our buildings. We have a huge amount of experience of both the planning system and construction industry which allows our projects to run smoothly from the outset.