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
10storm overflows within 2 km
452hours of spills in 2025 between them (typical neighbourhood: about 36)
77spill events counted
Southern Water
Portswood Wwtwinto River Itchen Estuary36 spills, 380 hours in 2025
800 m away
Southern Water
Lawn Road/Osbourne Roadinto Itchen Estuary11 spills, 49 hours in 2025
1.5 km away
Southern Water
Imperial Road Mount Pleasant Ceointo River Itchen7 spills, 15 hours in 2025
1.9 km away
Southern Water
Sirdar Road Southampton Csointo River Itchen17 spills, 7 hours in 2025
700 m away
Southern Water
Southcliff Road/Liverpool Streetinto Itchen Estuary3 spills, 1 hours in 2025
2.0 km away
Southern Water
Upr Shaftesbury Ave Southampton Csointo River Itchen1 spills, 0 hours in 2025
800 m away
Southern Water
Wessex Lane Southampton Outside 11into Saline Estuary2 spills, 0 hours in 2025
1.5 km away
Southern Water
Wessex Lane Southampton Outside 15into Saline Estuary0 spills, 0 hours in 2025
45 planned, approved or being built and 11 running (75 MW between them). Those within 5 km are on the map above.
Rooftop solar
Grosvenor House & Belmont House, Portswood Road - Solar PanelsApproved, not yet built · 160 kW
Apr 2025 650 m away
Rooftop solar
Airways Distribution Park, Wide Lane - Solar PanelsApproved, not yet built · 340 kW
Jun 2023 2.3 km away
Rooftop solar
Airways Distribution Park, Wide Lane, Unit 1 - Solar PanelsApproved, not yet built · 450 kW
Jan 2025 2.3 km away
Rooftop solar
Saxon House, Lower York Street - Solar Photovoltaic PanelsApproved, not yet built
May 2021 2.5 km away
Rooftop solar
Pei Genesis UK Limited, George Curl Way - Solar PanelsApproved, not yet built · 270 kW
Jan 2023 2.5 km away
Rooftop solar
Southampton General Hospital, Tremona Road - Solar PanelsApproved, not yet built · 250 kW
Feb 2024 2.9 km away
Rooftop solar
Spire Hospital, Chalybeate Close - Solar PanelsApproved, not yet built · 230 kW
May 2024 2.9 km away
Solar farm
Itchen Power, West End - Solar PanelsApproved, not yet built · 200 kW
Jan 2022 3.0 km away
Rooftop solar
Allington Lane, West End - Solar panelsApproved, not yet built · 500 kW
Nov 2021 3.5 km away
Rooftop solar
Harbour Parade - Solar PhotovoltaicsApproved, not yet built
Jul 2025 3.5 km away
Road and street works within 1 km
14 permitted works running now or planned, 7 of them major.
Major, planned
Church Lane, SouthamptonHighway improvement works · SOUTHAMPTON CITY COUNCIL · Road closure
Jan 2027 to Feb 2027 400 m away
Major
Portswood Road, SouthamptonHighway improvement works · NWP STREET LTD (formerly New World Payphones Ltd) · Multi-way signals
Oct 2026 to Oct 2026 650 m away
Major
Mayfield Road, SouthamptonHighway improvement works · NWP STREET LTD (formerly New World Payphones Ltd) · Road closure
Oct 2026 to Oct 2026 650 m away
Major, planned
Abbotts Way, SouthamptonHighway improvement works · SOUTHAMPTON CITY COUNCIL · Road closure
Feb 2027 to Mar 2027 700 m away
Major, planned
Brookvale Road, SouthamptonHighway improvement works · SOUTHAMPTON CITY COUNCIL · Road closure
Feb 2027 to Mar 2027 800 m away
Major, planned
Russell Place, SouthamptonHighway improvement works · SOUTHAMPTON CITY COUNCIL · Road closure
Feb 2027 to Mar 2027 850 m away
Major, planned
Lobelia Road, SouthamptonHighway improvement works · SOUTHAMPTON CITY COUNCIL · Road closure
Nov 2026 to Nov 2026 900 m away
Standard
Burgess Road, SouthamptonUtility repair and maintenance works · SCOTTISH AND SOUTHERN POWER DISTRIBUTION (SSEPD) · Multi-way signals
Jan 2027 to Jan 2027 600 m away
Minor
Thomas Lewis Way, SouthamptonHighway improvement works · SOUTHAMPTON CITY COUNCIL · Lane closure
Oct 2026 to Oct 2026750 m away
Major infrastructure projects within 30 km
Decided
M3 Junction 9 ImprovementHighways · Adjacent to Winnal industrial estate, Winchester, north of Alresford Road B3404
decided May 2024 16.9 km away
Pre-examination
Hampshire Water Transfer and Water Recycling ProjectDams and Reservoirs · The project is located in Hampshire, South East England, extending from Havant on the south coast, to Otterbourne near Winchester. The proposed Water Recycling Plant would be located off Harts Farm Way in Havant.
application due in May 2026 18.2 km away
Decision
AQUIND InterconnectorElectric Lines · From the UK seaward limit in the English Channel to Lovedean Substation.
application due Q4 2019 24.7 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.
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 Highfield & University: +17% over five years (2020 → 2025).
Council tax list: 10 homes added in the neighbourhood since April 2024.
Population (GP registrations): -3.2% in two years.