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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.
| King Cross | Calderdale | England and Wales | |
|---|---|---|---|
| Postcodes in a conservation area | 0% | 14% | 10% |
| Postcodes under an Article 4 direction | 0% | 0% | 16% |
| Listed buildings | 7 | 37 | 12 |
| Postcodes in a tree preservation order zone | 0% | 12% | 3% |
| Flats | 6% | 14% | 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 |
|---|---|---|---|---|
| 115, Parkinson Lane | Loft conversion | 2026 | – | 2 → 2 |
| 3, Devon Street | Loft conversion | 2026 | – | 10 → 6 |
| 32, Summergate Street | Loft conversion | 2026 | – | 5 → 4 |
| 7, St Pauls Road | Extension | 2026 | +21 m² | – |
| 29, Kingston Street | Extension | 2026 | +98 m² | 3 → 4 |
| 53, Hammond Street | Loft conversion | 2026 | +12 m² | 3 → 4 |
| 48, Thomas Street South | Loft conversion | 2026 | – | 5 → 5 |
| 4, Kingston Drive | Extension | 2026 | +23 m² | – |
| 5, Gibraltar Avenue | Extension | 2026 | +110 m² | 4 → 8 |
| 16, Constitutional Street | Extension | 2026 | +25 m² | – |
| 133, Warley Road |
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 ↗
| King Cross | Calderdale | England and Wales | |
|---|---|---|---|
| Rated A or B | 1% | 6% | 12% |
| Rated E, F or G | 43% | 25% | 16% |
| Homes on mains gas | 99% | 92% | 86% |
| Gas use per home (kWh a year) | 13,251 | 12,416 | 11,043 |
| Households in fuel poverty | 19% | 12% | 10% |
| Homes built before 1919 | 76% | 37% | 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 Yorkshire & Humber, 8% (12,484 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 King Cross.
| Stamp duty on the new home | £100 |
|---|---|
| Estate agent on yours 1.2% + VAT | £1,512 |
| Solicitors, buying and selling | £3,000 |
| Survey | £600 |
| Removals | £1,500 |
| Money gone | £6,712 |
| Building, plus 15% for design, planning and contingency | £57,500 |
|---|---|
| Less what it adds to your home's value 60% of the local price | −£15,000 |
| Money gone | £42,500 |
On these figures, moving loses about £35,788 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.
| Mytholmroyd & Cragg Vale | 29.2 | 20% | 0% | 268 | 4% |
|---|---|---|---|---|---|
| Greetland & Stainland | 27.8 | 28% | 0% | 103 | 6% |
| Sowerby Bridge | 27.7 | 17% | 0% | 54 | 5% |
| Skircoat Green | 26.8 | 71% | 0% | 32 | 5% |
| Ripponden, Rishworth & Barkisland | 22.0 | 2% | 0% | 226 | 7% |
| Sowerby & Luddendenfoot | 21.8 | 8% | 0% | 136 | 3% |
| Hebden Bridge | 21.3 | 35% | 0% | 439 | 4% |
| King Cross (this one) | 20.1 | 0% | 0% | 7 | 1% |
| Illingworth & Ogden | 19.9 | 0% | 0% | 19 | 6% |
| Ovenden East | 19.1 | 1% | 0% | 7 | 1% |
| Clifton & Bailiff Bridge | 18.8 | 0% | 0% | 68 | 7% |
| Rastrick West | 18.3 | 0% | 0% | 25 | 11% |
| Rastrick East | 17.3 | 0% | 0% | 13 | 3% |
| Southowram & Siddal | 17.2 | 5% | 0% | 39 | 4% |
| Elland | 17.2 | 7% | 0% | 51 | 8% |
| Brighouse | 17.0 | 0% | 0% | 33 | 6% |
| Todmorden West & Cornholme | 16.7 | 30% | 0% | 141 | 4% |
| Todmorden East & Walsden | 16.6 | 13% | 0% | 143 | 7% |
| Savile Park | 16.3 | 39% | 0% | 18 | 12% |
| Hipperholme | 15.2 | 0% | 0% | 37 | 18% |
| Northowram & Shelf | 15.1 | 9% | 0% | 49 | 5% |
| Central Halifax & Boothtown | 15.0 | 50% | 0% | 147 | 6% |
| Norton Tower & Mount Tabor | 13.7 | 19% | 0% | 21 | 4% |
| Pellon West & Highroad Well | 12.9 | 2% | 0% | 9 | 2% |
| Mixenden | 12.0 | 0% | 0% | 8 | 14% |
| Wheatley & Ovenden West | 11.8 | 0% | 0% | 9 | 9% |
| Pellon East | 9.6 | 12% | 0% | 26 | 0% |
| Neighbourhood | Council | England and Wales | |
|---|---|---|---|
| Homes with solar panels | 0.2% | 0.9% | 1.2% |
| Heated by a heat pump | 0.0% | 0.4% | 1.0% |
| Mains gas | 94.6% | 90.8% | 84.0% |
| Oil or LPG | 0.1% | 1.0% | 4.1% |
| Electric heating | 5.3% | 7.3% | 8.3% |
| Community heating | 0.0% | 0.1% | 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.
| II |
| 720 m |
Grade I and II* are the most important few per cent. Listing means consent is needed for most changes, inside and out. Contains Historic England data © Historic England 2026 (via planning.data.gov.uk), OGL.
| Extension |
| 2026 |
| +58 m² |
| – |
| 133, Warley Road | Loft conversion | 2026 | +58 m² | 4 → 4 |
|---|
| Kingston Cottage, Upper Kingston | Extension | 2026 | +37 m² | – |
|---|
| 108, Rochdale Road | Extension | 2026 | +24 m² | – |
|---|
| 34, Warley Street | Loft conversion | 2026 | – | 5 → 3 |
|---|
| 4, Craven Terrace | Loft conversion | 2026 | +39 m² | 8 → 4 |
|---|
| 26, Rose Street | Extension | 2026 | +21 m² | 4 → 4 |
|---|
| 36, Franklin Street | Extension | 2026 | +52 m² | – |
|---|
| 37, Mile Cross Place | Loft conversion | 2026 | – | 6 → 4 |
|---|
| 11, Mayfield Gardens | Loft conversion | 2026 | +5 m² | 7 → 5 |
|---|
| 24, Eton Street | Extension | 2026 | +42 m² | – |
|---|
| 4, Park View | Loft conversion | 2026 | +9 m² | 6 → 5 |
|---|
| 16, Victoria Terrace | Extension | 2026 | +41 m² | – |
|---|
| 136, Warley Road | Extension | 2026 | +10 m² | 4 → 4 |
|---|
| 14, Bubwith Grove | Extension | 2026 | +20 m² | – |
|---|
| 26, College Terrace | Extension | 2026 | +66 m² | – |
|---|
| 11, Westbury Place | Loft conversion | 2026 | – | 5 → 5 |
|---|
| 15, Gibraltar Road | Loft conversion | 2026 | +22 m² | 9 → 5 |
|---|
| 6, Haugh Shaw Road | Extension | 2026 | +19 m² | 8 → 9 |
|---|
| 10, Thrum Hall Lane | Loft conversion | 2026 | – | 5 → 3 |
|---|
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.