Spotted when a home's energy certificate shows at least 15 m² (and 15%) more floor area than an earlier one. Only homes with two certificates show up, so the real number is higher. A busy street suggests extensions get permission here; check the council's planning register for the details.
Storm overflows within 2 km
2storm overflows within 2 km
2,356hours of spills in 2025 between them (typical neighbourhood: about 36)
153spill events counted
Southern Water
Mannings Heath Wwtwinto River Arun76 spills, 1,252 hours in 2025
700 m away
Southern Water
Monks Gate Wwtwinto Tributary Of Nuthurst Stream77 spills, 1,104 hours in 2025
Planning Inspectorate list of nationally significant infrastructure projects (roads, railways, energy, water, waste), October 2026 (OGL). Each is placed at one point, usually the middle of the site; long schemes run well beyond it.
Transport schemes within 20 km
None on our list yet. We're starting with recently opened and under-construction rail schemes.
The longer view
Like-for-like prices in Horsham South, Mannings Heath & Nuthurst: +23% over five years (2020 → 2025).
Council tax list: 20 homes added in the neighbourhood since April 2024.
Population (GP registrations): -2.1% in two years.