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 CIAT - Architectural home extension plans Marlow

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The Contract Period For On Site Construction - How To Plan For The Design Process Of Your Home Extension - A clients guide.

The contracts length (the build time on site) will be detrmined by the complexity and size of the works proposed and your designers assessment of the scheme which is all subject to the final builders approval.

As a guide a classic two storey extension of say 60M2 with minimal internal alterations to the existing structure will take most good builders 3 months (12 weeks) with a 4 week overrun for final snagging or finishing due to inclement weather for example.

You are advised not to build in critical pressure timings for your scheme such as 'must be finished before going on holiday date' as this will simply add to the stress to all parties concerned.  Build in an overrun period and go for quality of build above finishing on target days.


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Architectural and Building Design Services - for planning permission and building regulations within Marlow, High Wycombe, Maidenhead, Bucks, Berks and Oxon areas.

Residential development for household extensions, conversions and new dwellings.

Measured surveys and roof inspection reports. Drawing plans on cad and specifications for planning permission, planning consent, planning approval, local authority approvals, building surveys and party wall act.

Chartered Architectural Technologists belong to CIAT (the Chartered institute of Architectural Technologists).

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