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What can I build, and will it pay? The planning rules, what neighbours have built, planning decisions, energy upgrades, and whether extending pays.
| Holbury North, Blackfield & Fawley | New Forest | England and Wales | |
|---|---|---|---|
| Postcodes in a conservation area | 0% | 13% | 10% |
| Postcodes under an Article 4 direction | 30% | 49% | 16% |
| Listed buildings | 30 | 26 | 12 |
| Postcodes in a tree preservation order zone | 0% | 5% | 3% |
| Flats | 6% | 13% | 22% |
planning.data.gov.uk (OGL), Historic England. The rules at one address are on its postcode's Improving page. General guidance, not planning advice.
| Home | Work | Seen | Space added | Rooms |
|---|---|---|---|---|
| 34, Wilverley Place | Extension | 2026 | +15 m² | – |
| 108, Hampton Lane | Extension | 2026 | +18 m² | – |
| 7, Hartsgrove Avenue | Extension | 2026 | +23 m² | – |
| Fairmile, Blackfield Road | Extension | 2025 | +54 m² | 9 → 10 |
| 17, Wilverley Place | Extension | 2025 | +17 m² | – |
| 8, Wentworth Grove | Extension | 2025 | +12 m² | 5 → 7 |
| 5, Alum Close | Extension | 2025 | +30 m² | 5 → 6 |
| 12, May Crescent | Extension | 2025 | +16 m² | 5 → 6 |
| 1, May Crescent | Extension | 2025 | +22 m² | 5 → 6 |
| The Laurels, New Road | Extension | 2024 | +123 m² | 6 → 6 |
Planning applications outside London aren't published as open data yet, so search the council's own register: the drawings, the decision and the agent are there. Find the council's planning register on GOV.UK ↗
| Holbury North, Blackfield & Fawley | New Forest | England and Wales | |
|---|---|---|---|
| Rated A or B | 5% | 7% | 12% |
| Rated E, F or G | 13% | 15% | 16% |
| Homes on mains gas | 97% | 87% | 86% |
| Gas use per home (kWh a year) | 10,638 | 10,638 | 11,043 |
| Households in fuel poverty | 9% | 8% | 10% |
| Homes built before 1919 | 4% | 11% | 20% |
A home's own recommended upgrades and their costs are on its energy certificate, shown on its page.
MHCLG energy certificates; DESNZ fuel poverty.
Across England and Wales, homes extended by a typical 30 m² and then resold rose about 11.1% more than similar homes nearby over the same years (124,884 resales); in South East, 13.4% (24,181 resales).
Rough build costs and resale evidence, not quotes or a valuation. How extensions pay off by size, type and region.
The money you don't get back either way, for the same extra space in Holbury North, Blackfield & Fawley.
| Stamp duty on the new home | £11,950 |
|---|---|
| Estate agent on yours 1.2% + VAT | £5,184 |
| Solicitors, buying and selling | £3,000 |
| Survey | £600 |
| Removals | £1,500 |
| Money gone | £22,234 |
| Building, plus 15% for design, planning and contingency | £57,500 |
|---|---|
| Less what it adds to your home's value 60% of the local price | −£47,400 |
| Money gone | £10,100 |
On these figures, extending loses about £12,134 less. Moving also changes the area, the schools and the commute; extending means months of building work and depends on planning.
Building costs vary a lot (a single-storey rear extension is often £2,000–£3,000 per m², more in London). How much space adds depends on the home and street: what extensions added to resale prices. A guide, not advice; nothing you type leaves this page.
Where people extend most, and where the planning rules are tighter.
| Ashurst & Cadnam | 50.4 | 20% | 96% | 22 | 4% |
|---|---|---|---|---|---|
| Brockenhurst & Sway | 40.5 | 16% | 100% | 75 | 9% |
| Bransgore & Burley | 32.4 | 26% | 50% | 79 | 10% |
| Milford & Lymington South | 32.1 | 9% | 92% | 71 | 10% |
| Ringwood North & Ibsley | 31.7 | 15% | 31% | 77 | 5% |
| Barton on Sea | 31.7 | 1% | 99% | 7 | 5% |
| Lymington Town & Boldre | 30.3 | 58% | 96% | 367 | 14% |
| Hordle & Bashley | 28.6 | 0% | 19% | 45 | 5% |
| Ringwood South | 26.5 | 31% | 2% | 97 | 13% |
| Lyndhurst & Minstead | 26.2 | 69% | 98% | 115 | 8% |
| Holbury North, Blackfield & Fawley (this one) | 21.6 | 0% | 30% | 30 | 5% |
| Lymington North & West | 20.7 | 1% | 20% | 27 | 13% |
| Marchwood & Dibden | 19.9 | 10% | 89% | 21 | 2% |
| New Milton East | 19.8 | 0% | 9% | 6 | 6% |
| New Milton West | 19.4 | 1% | 5% | 6 | 8% |
| Hythe | 19.2 | 5% | 84% | 20 | 6% |
| Fordingbridge, Rockbourne & Woodgreen | 18.9 | 43% | 26% | 375 | 12% |
| Totton Town | 18.4 | 3% | 79% | 26 | 8% |
| Totton Rushington | 16.5 | 0% | 34% | 1 | 2% |
| Langdown & Dibden Purlieu | 16.4 | 1% | 65% | 6 | 7% |
| Holbury South | 16.4 | 0% | 1% | 0 | 4% |
| Totton Calmore | 15.7 | 0% | 5% | 0 | 2% |
| West Totton | 14.8 | 1% | 0% | 5 | 3% |
| 6, Hughes Close |
|---|
| Extension |
| 2024 |
| +20 m² |
| 6 → 7 |
| 149, Hampton Lane | Extension | 2024 | +56 m² | – |
|---|
| 12, Crawte Avenue | Extension | 2024 | +18 m² | – |
|---|
| 22, Newlands Close | Extension | 2024 | +76 m² | 5 → 9 |
|---|
| 225, Hampton Lane | Extension | 2023 | +21 m² | – |
|---|
| 2, Evergreen Cottage, The Drove | Extension | 2023 | +28 m² | 3 → 5 |
|---|
| 1, Holly Copse, Blackfield Road | Extension | 2022 | +36 m² | – |
|---|
| 2, Holly Copse, Blackfield Road | Extension | 2022 | +38 m² | – |
|---|
| 2, St Michaels Close | Loft conversion | 2022 | – | 6 → 6 |
|---|
| Northwood, The Pentagon | Extension | 2022 | +17 m² | 5 → 6 |
|---|
| Northwood, The Pentagon | Loft conversion | 2022 | +17 m² | 5 → 6 |
|---|
| Iona, Blackfield Road | Extension | 2022 | +12 m² | 5 → 5 |
|---|
| 141, Hampton Lane | Extension | 2022 | +18 m² | – |
|---|
| 9, Ashdown Road | Extension | 2021 | +25 m² | – |
|---|
| 26, May Close | Extension | 2020 | +13 m² | 5 → 4 |
|---|
| Plot 1, The Drove | Extension | 2019 | +53 m² | – |
|---|
| 150, Hampton Lane | Extension | 2018 | +21 m² | – |
|---|
| Blackbird Cottage, Chapel Lane | Extension | 2018 | +8 m² | 6 → 5 |
|---|
| Blackbird Cottage, Chapel Lane | Loft conversion | 2018 | +8 m² | 6 → 5 |
|---|
| 8, Blackfield Road | Extension | 2016 | +35 m² | – |
|---|
Not every extension shows here. We only see building work when a new energy certificate is lodged, which happens when a home is sold, let or newly built. A loft or extension added since then won't appear, even with planning permission and building control sign-off, because those records aren't published as open data outside London. Missing work doesn't mean missing paperwork.
From energy certificates: an extension where a later certificate shows more floor space, a loft conversion where roof rooms appear.
Sort by any column; open a neighbourhood for the same view.
| Neighbourhood | Council | England and Wales | |
|---|---|---|---|
| Homes with solar panels | 1.6% | 1.2% | 1.2% |
| Heated by a heat pump | 0.6% | 1.2% | 1.0% |
| Mains gas | 94.0% | 86.1% | 84.0% |
| Oil or LPG | 1.1% | 4.3% | 4.1% |
| Electric heating | 3.9% | 7.4% | 8.3% |
| Community heating | 0.0% | 0.6% | 2.1% |
From each home's latest energy certificate, so panels or heat pumps fitted since aren't counted and the shares are lower than today's real figures. Compare areas in the data explorer.