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Canonbury House Refurbishment and Rear Extension
Canonbury, Islington
A full house refurbishment including a rear extension, excavation for a single-storey extension, and a lower garden terrace.

Field James Ltd · Company 03417057 · Trading heritage since 1997
Active, accounts up to date·main contractor & developer·Head office London
Field James Ltd was established in 1997 by Simon Rawson BSc, MCIOB, who has extensive experience in the construction industry, having worked for large building contractors. The company has successfully guided Field James through a diverse range of projects, from early television productions to restaurants and high-class residential refurbishments. Based in Highbury, North London, Field James operates within the M25 area, undertaking a variety of work including new builds, house extensions, and the refurbishment of grade 1 listed buildings, restaurants, and dance studios.
They are committed to building quality homes and commercial properties to the highest standards, holding registration with the NHBC. Simon's son, Sachin, joined the business in 2022 and is pursuing his MCIOB qualification, bringing a new generation of expertise to the company. Field James prides itself on its diverse project portfolio and its commitment to quality and client satisfaction.
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Canonbury, Islington
A full house refurbishment including a rear extension, excavation for a single-storey extension, and a lower garden terrace.
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Hampstead
A large detached house converted from four flats into a four-storey family home with two one-bedroom apartments on the lower ground floor.

West Hampstead
Extensive structural remodelling of an existing family house, including a rear extension, loft conversion, and roof terrace.
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Highgate, London
Full refurbishment of a property in Highgate.
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Mayfair
Full refurbishment of a Mount Street Restaurant.

Hampstead
A full house conversion and rear extension.

Hampstead Garden Suburb
A two-storey extension and dormer.

Roehampton, Southwest London
House conversion and rear extension.

Totteridge
A bespoke cedar clad garden office and gym built for a client's garden.
Crouch End
Kitchen, bathroom and rear extension at a family home.

Totteridge
A whole house refurbishment with rear and side extensions.

Watford, Hertfordshire
A full 5 bedroom house build in Mock Tudor style.
This profile was compiled from public records. Claim it to add the things buyers ask for:
Field James is a London-based building company established in 1997, specializing in new builds, house extensions, and refurbishments of high-class residential properties, restaurants, and dance studios. Their listed services include Main contractor, House builder, Refurbishment, Extensions and Loft conversions.
Field James Ltd is registered at 189 Highbury Quadrant, London, N5 2TE, in London.
Field James Ltd states that it works across London and M25.
Accounts filed for the year to 2025 report 3 employees, which places the company in the 1-9 employees band.
Field James Ltd does not disclose turnover: UK small-company accounts are not required to. Based on headcount and trade debtors in its filed accounts, turnover is likely to fall between £530k and £1.4m. This is an estimate, not a filed figure.
Companies House lists Field James Ltd as active, with accounts most recently made up to 2025-08-31.
Field James Ltd displays NHBC on its website.
Field James Ltd works in Residential, Commercial and Leisure.
Field James Ltd was incorporated on 1997-08-08.
Planyard keeps budgets, committed costs and variations live, so the figure in front of you is today's rather than last month's.