{ "name": "Lettza Development Feasibility Inputs", "title": "Development Feasibility Inputs", "url": "https://lettza.com/datasets/development-feasibility-inputs/", "csv": "https://lettza.com/datasets/development-feasibility-inputs.csv", "markdown": "https://lettza.com/datasets/development-feasibility-inputs/index.md", "computed_at": "2026-10-18", "license": "https://lettza.com/terms", "headline": "The median published figure in the Development Feasibility Inputs is 235,000 GBP across 4 figures from 2 sources' own pages (range 178,000 to 302,000 GBP), read 12 October 2026.", "quotes": [ "The median published figure in the Development Feasibility Inputs is 235,000 GBP across 4 figures from 2 sources' own pages (range 178,000 to 302,000 GBP), read 12 October 2026.", "2 of the 11 named sources read in full publish a figure; 9 publish none, read 12 October 2026.", "Development Feasibility Inputs, jurisdiction England: median 302,000 GBP across 1 source, read 12 October 2026.", "Development Feasibility Inputs, jurisdiction Northern-Ireland: median 178,000 GBP across 1 source, read 12 October 2026.", "Development Feasibility Inputs, jurisdiction UK: median 285,000 GBP across 1 source, read 12 October 2026.", "Development Feasibility Inputs, jurisdiction Scotland: median 185,000 GBP across 1 source, read 12 October 2026.", "The median is unchanged since 26 September 2026 (was 235,000 GBP across 4)." ], "citation": "\"Lettza Development Feasibility Inputs\", updated 2026-10-18, https://lettza.com/datasets/development-feasibility-inputs/.", "changed_since": { "since": "2026-09-26", "previous_median": 235000, "delta": 0, "direction": "unchanged", "sentence": "The median is unchanged since 26 September 2026 (was 235,000 GBP across 4)." }, "national": { "unit": "GBP", "n": 4, "median": 235000, "min": 178000, "max": 302000, "p25": 179750, "p75": 297750, "mean": 237500, "units": { "GBP": 4 }, "published_sources": 2, "named_sources": 11, "read_sources": 11, "not_published": 9, "published_share": 0.182 }, "by_axis": { "jurisdiction": { "England": { "GBP": { "n": 1, "median": 302000, "min": 302000, "max": 302000, "p25": 302000, "p75": 302000, "mean": 302000 } }, "Northern-Ireland": { "GBP": { "n": 1, "median": 178000, "min": 178000, "max": 178000, "p25": 178000, "p75": 178000, "mean": 178000 } }, "UK": { "GBP": { "n": 1, "median": 285000, "min": 285000, "max": 285000, "p25": 285000, "p75": 285000, "mean": 285000 } }, "Scotland": { "GBP": { "n": 1, "median": 185000, "min": 185000, "max": 185000, "p25": 185000, "p75": 185000, "mean": 185000 } } } }, "rows": [ { "source": "ONS House Price Index", "url": "https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/housepriceindex/latest", "figure": "£302,000 ", "value": 302000, "unit": "GBP", "vat": null, "axis": { "jurisdiction": "England" }, "retrieved_at": "2026-10-12", "quote": "Average house prices over the 12 months to December 2023 decreased in England to £302,000 (negative 2.1%), decreased in Wales to £214,000 (negative 2.5%), but increased in Scotland to £190,000 (3.3%).", "source_class": "primary-government", "text_sha256": "36d877f8428627478fd77dcf82e55a6812929be11cd3f9da9aad70ae4cb70486" }, { "source": "ONS House Price Index", "url": "https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/housepriceindex/latest", "figure": "£178,000 ", "value": 178000, "unit": "GBP", "vat": null, "axis": { "jurisdiction": "Northern-Ireland" }, "retrieved_at": "2026-10-12", "quote": "Average house prices increased by 1.4% to £178,000 in the year to Quarter 4 (Oct to Dec) 2023 in Northern Ireland.", "source_class": "primary-government", "text_sha256": "36d877f8428627478fd77dcf82e55a6812929be11cd3f9da9aad70ae4cb70486" }, { "source": "ONS House Price Index", "url": "https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/housepriceindex/latest", "figure": "£285,000 ", "value": 285000, "unit": "GBP", "vat": null, "axis": { "jurisdiction": "UK" }, "retrieved_at": "2026-10-12", "quote": "Figure 2: The average UK house price was £285,000 in December 2023 (provisional estimate)", "source_class": "primary-government", "text_sha256": "36d877f8428627478fd77dcf82e55a6812929be11cd3f9da9aad70ae4cb70486" }, { "source": "Registers of Scotland Property Market Report 2023-24", "url": "https://www.ros.gov.uk/about/news/2024/property-market-report-2023-24", "figure": "£185,000", "value": 185000, "unit": "GBP", "vat": null, "axis": { "jurisdiction": "Scotland" }, "retrieved_at": "2026-10-12", "quote": "The median price of a residential property in Scotland was £185,000", "source_class": "primary-government", "text_sha256": "d2009bd53dc798715cf8ab89cc98147f58fec927ae5ff3b0b574f32ee012071d" } ], "not_published": [ { "source": "MHCLG / VOA land value estimates", "url": "https://www.gov.uk/government/collections/land-value-estimates", "retrieved_at": "2026-09-12", "reason": "read in full and no accepted figure on the page" }, { "source": "Land values dataset (data.gov.uk)", "url": "https://www.data.gov.uk/dataset/d9f66cea-1888-44cb-8959-6ebc98f5da6b/land-values", "retrieved_at": "2026-09-12", "reason": "read in full and no accepted figure on the page" }, { "source": "ONS construction output in Great Britain", "url": "https://www.ons.gov.uk/businessindustryandtrade/constructionindustry/bulletins/constructionoutputingreatbritain/latest", "retrieved_at": "2026-09-11", "reason": "read in full and no accepted figure on the page" }, { "source": "Registers of Scotland data and statistics", "url": "https://www.ros.gov.uk/data-and-statistics", "retrieved_at": "2026-09-12", "reason": "read in full and no accepted figure on the page" }, { "source": "Scottish Government housing statistics", "url": "https://www.gov.scot/collections/housing-statistics/", "retrieved_at": "2026-10-12", "reason": "read in full and no accepted figure on the page" }, { "source": "ABS Building Approvals, Australia", "url": "https://www.abs.gov.au/statistics/industry/building-and-construction/building-approvals-australia/latest-release", "retrieved_at": "2026-10-11", "reason": "read in full and no accepted figure on the page" }, { "source": "ABS Building Activity, Australia", "url": "https://www.abs.gov.au/statistics/industry/building-and-construction/building-activity-australia/latest-release", "retrieved_at": "2026-10-12", "reason": "every candidate on the page was refused" }, { "source": "ABS Producer Price Indexes, Australia", "url": "https://www.abs.gov.au/statistics/economy/price-indexes-and-inflation/producer-price-indexes-australia/latest-release", "retrieved_at": "2026-10-12", "reason": "read in full and no accepted figure on the page" }, { "source": "ABS Total Value of Dwellings", "url": "https://www.abs.gov.au/statistics/economy/price-indexes-and-inflation/total-value-dwellings/latest-release", "retrieved_at": "2026-09-12", "reason": "read in full and no accepted figure on the page" } ], "sources": [ { "url": "https://www.gov.uk/government/collections/land-value-estimates", "label": "MHCLG / VOA land value estimates", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.data.gov.uk/dataset/d9f66cea-1888-44cb-8959-6ebc98f5da6b/land-values", "label": "Land values dataset (data.gov.uk)", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.ons.gov.uk/economy/inflationandpriceindices/bulletins/housepriceindex/latest", "label": "ONS House Price Index", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.ons.gov.uk/businessindustryandtrade/constructionindustry/bulletins/constructionoutputingreatbritain/latest", "label": "ONS construction output in Great Britain", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.ros.gov.uk/data-and-statistics", "label": "Registers of Scotland data and statistics", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.ros.gov.uk/about/news/2024/property-market-report-2023-24", "label": "Registers of Scotland Property Market Report 2023-24", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.gov.scot/collections/housing-statistics/", "label": "Scottish Government housing statistics", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.abs.gov.au/statistics/industry/building-and-construction/building-approvals-australia/latest-release", "label": "ABS Building Approvals, Australia", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.abs.gov.au/statistics/industry/building-and-construction/building-activity-australia/latest-release", "label": "ABS Building Activity, Australia", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.abs.gov.au/statistics/economy/price-indexes-and-inflation/producer-price-indexes-australia/latest-release", "label": "ABS Producer Price Indexes, Australia", "license": "the publisher's own terms; quoted for reporting and comment" }, { "url": "https://www.abs.gov.au/statistics/economy/price-indexes-and-inflation/total-value-dwellings/latest-release", "label": "ABS Total Value of Dwellings", "license": "the publisher's own terms; quoted for reporting and comment" } ], "methodology": "Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 2 of the 11 named sources that could be read published a usable figure; 9 published none and are recorded as not published, never filled in; 0 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in GBP (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 4 figures, never sentences; 22 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per area per input per period, each quoted from the statistical authority with its release date; the derived figure is the RESIDUAL - end value minus build cost minus finance cost from the index above, giving the land value a scheme can bear in that area, and the gap between that and the state's own land value estimate. That residual is what a feasibility study computes one site at a time and what no agency, no software vendor and no lender publishes across a whole country; the series across dated releases answers 'is it getting harder', which is the only version of this question that is news.", "embed": "

235,000 GBP

median published figure, Development Feasibility Inputs, across 2 sources, read 12 October 2026

Source: Lettza Development Feasibility Inputs
" }