Why Neighbour Relations Matter
In London's densely packed streets, an extension project next door is a significant event for neighbours. Noise, dust, vehicle access, scaffolding, and temporary disruption to services are genuine inconveniences. How the building owner and contractor manage these matters affects the relationship — and, more practically, affects the risk of formal disputes or injunctions.
Pre-Construction Preparation
Party Wall Notices
If the extension triggers the Party Wall etc. Act 1996 (see our separate guide), the party wall notice process will formally involve the neighbour before work starts. The Party Wall Award records the condition of the neighbouring property and the agreed access and working arrangements.
Schedule of Condition Survey
Even where the Party Wall Act does not apply, it is strongly advisable to commission an independent schedule of condition of adjacent properties before any works begin.
A schedule of condition is a photographic and written record of the existing condition of:
- The neighbouring property's walls, foundations, and garden
- Any pre-existing cracks, settlement, or defects
- Internal rooms adjacent to the work area if access is granted
Why this matters: If a neighbour later claims that a crack appeared during your works, the schedule of condition is your evidence that the crack existed before construction started. Without it, any pre-existing defect could be attributed to your works, creating a liability that is difficult to disprove.
The survey is typically carried out by a building surveyor or party wall surveyor and costs £300–£700.
Communication Before Works Start
- Write to neighbours before work begins, explaining the nature and expected duration of the works
- Provide a contact name and number for any concerns
- Confirm the agreed working hours (typically 8am–6pm Monday to Friday, 8am–1pm Saturday, no work on Sundays or Bank Holidays — though this varies by borough)
- Be honest about likely noise and dust periods (particularly demolition and groundwork stages)
During Construction
Site Management
- Ensure scaffolding does not encroach on neighbours' property without their written permission
- Stack materials within the site boundary
- Ensure hoardings and site protection are adequate
- Ensure wheel-wash or similar is available to prevent mud being tracked onto the road
- Manage waste contractor vehicles to minimise street obstruction
Responding to Concerns
If a neighbour raises a concern during works:
- Take it seriously — inspect and respond promptly
- If structural damage is alleged, stop the works and have an independent inspection carried out before resuming
- Keep written records of all communications
Access Over Neighbouring Land
If access to the neighbouring property is required during the works (for example, to scaffold from next door's garden, or to work on the shared wall from their side), this requires their prior written consent. The Party Wall Award may grant this access if the party wall process was engaged — but not otherwise.
Post-Construction: Closing Out Dilapidations
After the works are complete:
- The party wall surveyor (if involved) will carry out a post-construction inspection and compare the condition against the pre-works schedule
- Any damage caused by the works should be repaired by the building owner
- A written confirmation from the party wall surveyor that no damage was caused (or that any damage has been remedied) provides closure
Common Disputes and How to Avoid Them
| Issue | Prevention |
|---|---|
| Crack alleged during works | Pre-construction schedule of condition |
| Boundary encroachment | Confirm boundary positions before setting out |
| Party wall access refusal | Serve notice well in advance, engage a party wall surveyor |
| Noise complaints | Agree working hours in writing before start |
| Scaffolding licence disputes | Check local authority requirements, inform neighbours |
| Dust/debris on neighbour's property | Hoarding, sheeting, and regular clean-up |
RCB Design & Build
RCB includes pre-construction neighbour communication as a standard part of project mobilisation. We coordinate party wall notice service, schedule of condition surveys, and clear communication plans with neighbouring properties before work begins — reducing the risk of disputes and building goodwill for a smoother project.