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
No monitored sewer storm overflows within 2 km (England only).
SDC M40 CampusGenerating Stations · The site of the project is located in Buckinghamshire, England. It is approximately 2km to the west of Gerrards Cross, approximately 2.5km east of Beaconsfield and approximately 1.5km north of Hedgerley. The site comprises land immediately to the south of the A40 Oxford Road and immediately to the north of the M40 motorway. It has a history of landfill activities and is currently operated by Veolia for the landfilling of inert building waste (albeit the site no longer accepts any forms of waste).
application due January 2027 20.2 km away
Decided
Slough Multifuel Extension ProjectGenerating Stations · Land at 342 Edinburgh Avenue, Slough Trading Estate, Slough, Berkshire, SL1 4TU.
decided Nov 2023 27.6 km away
Pre-application
Heathrow WestAirports · Heathrow Airport and land to the north-west and west of Heathrow Airport
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 Hemel Hempstead Town: +10% over five years (2020 → 2025).
Council tax list: 120 homes added in the neighbourhood since April 2024.
Population (GP registrations): +1.4% in two years.
Ashlyns Nursing Home, Chesham Road - Solar PanelsApproved, not yet built · 160 kW
Sept 2025 6.2 km away
Running nearest: Iron Mountain Site (rooftop solar, 2.4 km); Woodside Leisure Centre - Solar PV Panels (rooftop solar, 8.7 km).
DESNZ Renewable Energy Planning Database, April to June 2026 (OGL). Projects of 150 kW and over; refused, withdrawn and abandoned ones are left out.
Major
Anchor Lane, Hemel HempsteadUtility asset works · CADENT GAS LIMITED · Road closure
Sept 2026 to Oct 2026 850 m away
Standard
High Street, Hemel HempsteadDisconnection or alteration of supply · CADENT GAS LIMITED · Some carriageway incursion
Oct 2026 to Oct 2026 700 m away
Standard
Christchurch Road, Hemel HempsteadNew service connection · CADENT GAS LIMITED · Give and take
Oct 2026 to Oct 2026 750 m away
DfT Street Manager permits (OGL), England. Dates are the planned ones; works often finish early or overrun.
application due November 2027 29.6 km away
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.