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Understand the existing site
A rear extension may have a small footprint but a complicated route to it. Side access, steps, an occupied garden and nearby structures affect how the work is organised. Share the narrowest part of the route, overhead restrictions and the area available for deliveries or material collection. Do not assume the contractor can use a neighbouring property; any access arrangement needs to be established through the project team.
Build from the specified design
The foundation solution depends on the building and site information. LG’s construction scope should be aligned with the structural drawings and the requirements of the relevant project professionals. This page cannot determine a foundation depth or choose a type from a postcode. Where investigations or design decisions remain outstanding, identify them before treating a provisional allowance as a fixed construction detail.
Coordinate drainage and the floor
Check how existing drains, proposed pipe routes and service entries relate to the extension footprint. Floor levels and the junction with the existing building also need to be understood. Bring the drainage information and ground-floor details into the same conversation as the foundations so the work can be packaged coherently.
- Architectural layout and structural foundation details
- Existing and proposed drainage information
- Ground-floor construction and level references
- Access photographs and preferred timing
Prepare the first LG conversation
Tell us whether you are extending an occupied home, using a main builder or arranging individual trades. Describe the work you want LG to consider and what another contractor will provide. The team can discuss the available information and the next steps needed to define the package. A clear brief helps separate the groundworks enquiry from the wider extension build.