99 Structural Engineers

your local Kensington-based practice

239 Kensington High St, London, W8 6SN Directions

   Open today 09:00 - 17:00

Business overview

Kensington-based structural engineering consultancy. Specialising in residential, carbon zero and MMC.

99 Structural Engineers are based on High Street Kensington and provide structural engineering consulting locally in the Royal Borough of Kensington and Chelsea (RBKC) and the surrounding area of West London.

Our clients include private individuals as well as local businesses such as the Ledbury restaurant, award-winning architects such as Simone de Gale and a series of projects for Kensington Council.

Our three main segments are Residential, Carbon Zero and MMC. We provide structural engineering design for basements, extensions and renovations. We design using traditional materials of concrete, masonry, steel and timber. We can also provide sustainable options that move towards Carbon Zero or for accelerated construction programmes using MMC. We offer structural engineer consulting on your property either pre-purchase, in response to a concern, or if a dispute or insurance claim should arise. We are able to assist with regulatory compliance such as Letters to Freeholders, Structural Surveys and Building Control submissions. We can be appointed for site visits, client monitoring services or checking calculations.


99 Structural Engineers Grade II Listed Kensington Townhouse Refurb Extension Successful Planning Approval © Agnese Sanvito
Architect: Architecture for London, Engineer: 99 Structural Engineers, Photo: Christian Brailey
Architect: Architecture for London, Engineer: 99 Structural Engineers, Photo: Christian Brailey
Rooftop Extension and Internal Refurbishment Steel Frame Existing Masonry Architect: Architecture for London, Engineer: 99 Structural Engineers, Photo: Christian Brailey
Internal refurbishment and reorganisation including structural changes and strengthening to Grade II Listed Cottage for private client. Architect: ARCI, Engineer: 99 Structural Engineers
99 Structural Engineers were appointed by the Park Management of Royal Borough of Kensington and Chelsea Council to advise on repairs to a wall enclosing the Dutch Garden at the Grade II Listed Holland Park. Photo: Pierra
Architect: Smallwood Architects, Engineer: 99 Structural Engineers, Contractor: Mallett Construction, Photo: Mallett Construction.

Products & Services

Beam Design

Building Control

Building Renovations

Construction Design

Construction Engineers

Consulting Engineers

Defect Analysis

Engineering Models

Foundation Design

Reinforced Concrete Design

Retaining Walls

Self Build Homes

Site Engineers

Site Investigations

Structural Calculations

Structural Design

Structural Drawings

Structural Glass

Structural Repairs

Structural Surveys


Timber Engineers

Timber Frame Buildings

Timber Repair



Very helpful, good service

John was very helpful and carried out all works as discussed. Very good service, I would definitely use him again.
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