Contract Administration in Isleworth

Documented building context

Hounslow’s Isleworth Riverside appraisal, whose cover is dated October 2021, records differing building histories along Church Street. It identifies earlier fabric behind the frontages at 59 and 61, Gothic features at 55–57, and an eighteenth-century brick group at 49–53. These are named examples within a varied street, not one construction date or specification for Isleworth.

Isleworth tender and contract decisions

A Church Street tender should distinguish the specific building's phases and materials rather than apply one historic date to the whole frontage. Hounslow identifies earlier fabric behind some buildings and different architectural treatments at others. Obtain the actual survey and alteration evidence, then ask the designer to locate the retained wall, proposed opening and repair interfaces on the issued drawings. A street-facing photograph alone cannot establish the construction behind a later facade.

For a repair involving Gothic details or an eighteenth-century brick group, separate decorative treatment from work to the supporting fabric. Specify the accepted material or sample where needed and include protection of adjoining surfaces. Define the extent of opening-up and the adviser responsible for the response. If the exposed construction differs from the tender basis, retain the finding, revised detail and JCT instruction together. The contractual assessment should follow the executed documents and evidence of the actual change.

Rear additions and upper accommodation need their own access and occupation plan. Show how the contractor reaches the work and which entrances or services must remain available. Obtain any separate management or neighbour arrangements through the appropriate client adviser. Programme inspections before relevant junctions become concealed. At completion, use the same component references for approved details, tests, guarantees and outstanding items, distinguishing completed contract work from excluded or inaccessible fabric.

Clarify design responsibility and the information still needed before choosing the JCT form. The contract should reflect this property's defined scope and interfaces; the riverside appraisal cannot supply a current permission, a hidden construction detail or evidence that an earlier alteration was completed correctly.

HCS cannot act as independent contract administrator where HCS is the contractor.

Contract scope

• Hounslow: Isleworth Riverside Conservation Area Appraisal, October 2021 — PDF / printed page 27, paragraph 5.2.8, Church Street: 59, 61, 55–57 and 49–53. Cover states October 2021; the January 2022 upload label is not treated as an edition date.

• Major works
• Tendering
• Clerk of Works
• Employer's Agent
• Insurance reinstatement

• Hounslow area guide
• Richmond
• Twickenham
• Chiswick
• Brentford
• Osterley

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