Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS
External wall insulation and timber boarding added to east wall. Front door design updated, bi-fold doors changed to 6 doors and addiotnal rooflight added to landing outside bedroom 6 (as Non-Material Amendment to Planning Permission 26/00817/FPH granted 03.06.2026)
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Progress
Application details
- Reference
- 26/02210/NMA
- Local authority
- North Hertfordshire
Key dates
- Submitted
- 2 Sept 2026
- Validated
- 2 Sept 2026
- Target decision
- 30 Sept 2026
Estimated project value
£7k–£19k
Typical UK cost for this job type, at UK average rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade / BestBuilders 2026 roof replacement, 3-bed semi.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.