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).
7 permitted works running now or planned, 5 of them major.
Major, planned
Nascot Wood Road, WatfordUtility asset works · CADENT GAS LIMITED · Some carriageway incursion
Nov 2026 to Nov 2026 550 m away
Major
Fuller Gardens, WatfordHighway repair and maintenance works · HERTFORDSHIRE COUNTY COUNCIL · Road closure
Oct 2026 to Oct 2026 650 m away
Major
Milton Street, WatfordHighway improvement works · HERTFORDSHIRE COUNTY COUNCIL · Road closure
Nov 2026 to Nov 2026 900 m away
Major
Garfield Street, WatfordHighway improvement works · HERTFORDSHIRE COUNTY COUNCIL · Road closure
Nov 2026 to Nov 2026 900 m away
Major
Hempstead Road, WatfordHighway improvement works · HERTFORDSHIRE COUNTY COUNCIL · Two-way signals
Sept 2026 to Oct 2026 1000 m away
Minor
Middle Way, WatfordUtility repair and maintenance works · AFFINITY WATER - C · Some carriageway incursion
Oct 2026 to Oct 2026 400 m away
Minor
Langley Road, WatfordHighway repair and maintenance works · HERTFORDSHIRE COUNTY COUNCIL · Multi-way signals
Nov 2026 to Nov 2026 850 m away
DfT Street Manager permits (OGL), England. Dates are the planned ones; works often finish early or overrun.
Major infrastructure projects within 30 km
Pre-application
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).
Beechtree Junction, Potters Crouch - Solar PV PanelsPlanning application in · 50 MW
Jul 2025 6.9 km away
Biomass
Appspond Lane Energy PlantApproved, not yet built
Mar 2021 7.2 km away
Running nearest: Woodside Leisure Centre - Solar PV Panels (rooftop solar, 2.3 km); Mount Vernon Hospital - Solar Panels (rooftop solar, 7.4 km); Aylett Nurseries - Solar Panels (rooftop solar, 9.1 km); Elstree Film And TV Studios, Shenley Road - Solar Panels (rooftop solar, 9.9 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.
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.