{
  "slug": "cheaper-twin/w1j-7-vs-sw7-3",
  "type": "cheaper_twin",
  "page_path": "/cheaper-twin/w1j-7-vs-sw7-3",
  "title": "W1J 7 vs SW7 3: the same flat, about 41% cheaper per m\u00b2",
  "hook": "\u00a31,223,460 less for an equivalent flat: same station, similar schools, ~2.6km apart",
  "shocking_number": "41%",
  "pricey": {
    "sector": "W1J 7",
    "name": "Mayfair",
    "label": "Mayfair (W1J 7)",
    "named": true,
    "est_psqm": 32986,
    "n": 724
  },
  "twin": {
    "sector": "SW7 3",
    "name": null,
    "label": "SW7 3",
    "named": false,
    "est_psqm": 19392,
    "n": 2581
  },
  "stats": {
    "gap_pct": 41.2,
    "gap_per_sqm": 13594,
    "gap_on_90sqm": 1223460,
    "gap_on_avg_home": 1077324,
    "dominant_type": "Flats/Maisonettes",
    "build_year": 1914,
    "good_secondary_catchments": 2.0,
    "station_km": 0.3,
    "distance_km": 2.6
  },
  "map_query": "lat=51.49856&lon=-0.16253&zoom=12.5&filter=Est.%20price%20per%20sqm:0:20400&filter=Good%2B%20secondary%20school%20catchments:1:11",
  "map_url": "https://perfect-postcode.co.uk/?lat=51.49856&lon=-0.16253&zoom=12.5&filter=Est.%20price%20per%20sqm:0:20400&filter=Good%2B%20secondary%20school%20catchments:1:11",
  "og_image": "https://perfect-postcode.co.uk/api/screenshot?og=1&lat=51.49856&lon=-0.16253&zoom=12.5&filter=Est.%20price%20per%20sqm:0:20400&filter=Good%2B%20secondary%20school%20catchments:1:11",
  "methodology": "Postcode sectors (e.g. N10 3) compared on estimated \u00a3/m\u00b2 of floor space. A pair is only called a 'twin' when the two sectors share the dominant property type, build era (\u00b130y), good-school catchment provision, station access, deprivation/tenure, education, age and home size, so the price gap reflects a name premium, not a different kind of area. Estimates, not valuations; aggregated to sector, never address-level.",
  "needs_name_check": true,
  "attribution": "Contains HM Land Registry data \u00a9 Crown copyright and database right. Licensed under the Open Government Licence v3.0.",
  "sources": "HM Land Registry \u00b7 EPC (DLUHC) \u00b7 Ofsted \u00b7 DfT \u00b7 ONS \u00b7 Police.uk"
}