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).
27 planned, approved or being built and 8 running (93 MW between them). Those within 5 km are on the map above.
Battery storage
Pinstone Farm, Oxford Road - Battery Energy Storage SystemPlanning application in · 60 MW
Jul 2025 2.3 km away
Battery storage
Gerrards Cross Sewage Treatment WorksPlanning application in · 20 MW
Dec 2020 2.3 km away
Rooftop solar
Hillingdon Sports & Leisure Centre - Solar PanelsApproved, not yet built · 220 kW
Jan 2024 3.1 km away
Rooftop solar
Tims Dairy, Denham Lane - Solar PanelsPlanning application in · 220 kW
May 2026 4.5 km away
Rooftop solar
Micro House, Bury Street - Solar ArraysApproved, not yet built
Apr 2025 5.1 km away
Rooftop solar
Hillingdon Hospital, Pield Heath Road - Solar PV PanelsApproved, not yet built · 190 kW
Sept 2025 5.5 km away
Rooftop solar
Hillingdon Hospital - Hospital RedevelopmentApproved, not yet built
Jan 2023 5.5 km away
Solar farm
Iver Water Treatment Works, Court Lane - Solar PanelsApproved, not yet built
Jul 2023 6.1 km away
Rooftop solar
Northwood Health And Racquet Club, Ducks Hill Road - Solar Pv PanelsPlanning application in · 330 kW
Jul 2023 6.3 km away
Rooftop solar
Wexham Park Hospital, Wexham Street - Solar PanelsApproved, not yet built · 210 kW
Dec 2025 6.4 km away
Road and street works within 1 km
13 permitted works running now or planned, 5 of them major.
Major, planned
Ashmead Lane, DenhamUtility asset works · CITYFIBRE METRO NETWORKS LTD · Road closure
Nov 2026 to Nov 2026 200 m away
Major
Denham Avenue, DenhamDisconnection or alteration of supply · CADENT GAS LIMITED · Road closure
Oct 2026 to Oct 2026 350 m away
Major
Oxford Road, DenhamWorks for road purposes · NATIONAL HIGHWAYS · Lane closure
Jan 2027 to Jan 2027 600 m away
Major
Oxford Road, DenhamWorks for road purposes · NATIONAL HIGHWAYS · Lane closure
Feb 2027 to Feb 2027 600 m away
Major
Oxford Road, DenhamWorks for road purposes · NATIONAL HIGHWAYS · Lane closure
Mar 2027 to Mar 2027 650 m away
Standard
Oxford Road, DenhamWorks for road purposes · NATIONAL HIGHWAYS · No carriageway incursion
Oct 2026 to Oct 2026 200 m away
Standard
Oxford Road, DenhamWorks for road purposes · NATIONAL HIGHWAYS · No carriageway incursion
Aug 2027 to Aug 2027 200 m away
Standard
Oxford Road, DenhamWorks for road purposes · NATIONAL HIGHWAYS · No carriageway incursion
Sept 2027 to Sept 2027 250 m away
Standard
Denham Avenue, DenhamWorks for road purposes · NATIONAL HIGHWAYS · No carriageway incursion
Sept 2027 to Sept 2027 500 m away
Standard
Denham Avenue, DenhamWorks for road purposes · NATIONAL HIGHWAYS · No carriageway incursion
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).
application due January 2027 6.8 km away
Pre-application
Heathrow WestAirports · Heathrow Airport and land to the north-west and west of Heathrow Airport
application due November 2027 9.2 km away
Decided
Slough Multifuel Extension ProjectGenerating Stations · Land at 342 Edinburgh Avenue, Slough Trading Estate, Slough, Berkshire, SL1 4TU.
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.