andras/perfect-postcode
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages 2 Wiki Activity Actions

All changes

Browse source
This commit is contained in:
Andras Schmelczer 2026-03-14 21:36:00 +00:00
parent 593f380581
commit 49f7ec2f5a
60 changed files with 1783 additions and 679 deletions
Download patch file Download diff file Expand all files Collapse all files

10
frontend/src/components/learn/LearnPage.tsx
View file

@ -23,7 +23,7 @@ const DATA_SOURCES = [
id: 'epc',
name: 'Energy Performance Certificates (EPC)',
origin: 'Ministry of Housing, Communities & Local Government',
use: 'Domestic Energy Performance Certificates providing floor area, number of rooms, construction age, energy ratings, property type, and built form. Fuzzy-joined with Price Paid records by address within postcode buckets. Property owners can opt out of public disclosure.',
use: 'Domestic Energy Performance Certificates providing floor area, number of rooms, construction year, energy ratings, property type, and built form. Fuzzy-joined with Price Paid records by address within postcode buckets. Property owners can opt out of public disclosure.',
optOutUrl: 'https://www.gov.uk/guidance/energy-performance-certificates-opt-out-of-public-disclosure',
url: 'https://epc.opendatacommunities.org/downloads/domestic',
license: 'Open Government Licence v3.0',
@ -140,7 +140,7 @@ const FAQ_ITEMS: FAQItem[] = [
{
question: 'What is the "Estimated current price" and how is it calculated?',
answer:
'The estimated current price is an inflation-adjusted estimate of what a property might be worth today, based on its last known sale price. It works in three stages. First, a repeat-sales price index (built from properties that have sold more than once) tracks how prices have moved within each postcode sector and property type over time — this adjusts the historical sale price to current levels. Second, spatial comparable sales from nearby properties of the same type are used to refine the estimate. Third, a machine learning model captures quality differences that the index alone misses (such as floor area, energy rating, local amenities, and deprivation). Properties with post-sale improvements detected from EPC records — such as extensions or renovations — also receive a renovation premium. The more recently a property sold, the closer the estimate will be to the actual sale price; older sales are adjusted more heavily.',
'The estimated current price is an inflation-adjusted estimate of what a property might be worth today, based on its last known sale price. It works in three stages. First, a repeat-sales price index (built from properties that have sold more than once) tracks how prices have moved within each postcode sector and property type over time - this adjusts the historical sale price to current levels. Second, spatial comparable sales from nearby properties of the same type are used to refine the estimate. Third, a machine learning model captures quality differences that the index alone misses (such as floor area, energy rating, local amenities, and deprivation). Properties with post-sale improvements detected from EPC records - such as extensions or renovations - also receive a renovation premium. The more recently a property sold, the closer the estimate will be to the actual sale price; older sales are adjusted more heavily.',
},
{
question: 'How are current for-sale and for-rent listings found?',
@ -150,7 +150,7 @@ const FAQ_ITEMS: FAQItem[] = [
{
question: 'What area does this cover?',
answer:
'England. The core datasets — Land Registry prices, EPC energy certificates, deprivation indices, crime statistics, school ratings, broadband speeds, noise mapping, and council tax — all cover England. Points of interest from OpenStreetMap cover Great Britain, but the property-level data is England only.',
'England. The core datasets - Land Registry prices, EPC energy certificates, deprivation indices, crime statistics, school ratings, broadband speeds, noise mapping, and council tax - all cover England. Points of interest from OpenStreetMap cover Great Britain, but the property-level data is England only.',
},
{
question: 'Why is data missing for my property?',
@ -160,7 +160,7 @@ const FAQ_ITEMS: FAQItem[] = [
{
question: 'How do I find areas that match what I\'m looking for?',
answer:
'Use the Filters panel on the left. Add filters for the features you care about — for example, set a price range, require a minimum energy rating, or select "Freehold" only. All filters combine with AND logic, so every property must satisfy every filter. Use the eye icon to pin a feature as the colour source — this lets you, say, colour the map by price while filtering on floor area and energy rating at the same time. The hexagons will update in real time as you adjust.',
'Use the Filters panel on the left. Add filters for the features you care about - for example, set a price range, require a minimum energy rating, or select "Freehold" only. All filters combine with AND logic, so every property must satisfy every filter. Use the eye icon to pin a feature as the colour source - this lets you, say, colour the map by price while filtering on floor area and energy rating at the same time. The hexagons will update in real time as you adjust.',
},
{
question: 'How does the travel time feature work?',
@ -180,7 +180,7 @@ const FAQ_ITEMS: FAQItem[] = [
{
question: 'How reliable is the crime data at this scale?',
answer:
'Crime figures are sourced from data.police.uk and aggregated as yearly averages (2023\u20132025) per LSOA — an area of roughly 1,500 people. This means the numbers reflect a neighbourhood average, not a specific street. Crime counts are broken down by type (violence, burglary, anti-social behaviour, vehicle crime, etc.) so you can filter on the categories that matter to you. As with all area-level statistics, they are useful for comparing neighbourhoods but should not be over-interpreted for individual streets.',
'Crime figures are sourced from data.police.uk and aggregated as yearly averages (2023\u20132025) per LSOA - an area of roughly 1,500 people. This means the numbers reflect a neighbourhood average, not a specific street. Crime counts are broken down by type (violence, burglary, anti-social behaviour, vehicle crime, etc.) so you can filter on the categories that matter to you. As with all area-level statistics, they are useful for comparing neighbourhoods but should not be over-interpreted for individual streets.',
},
{
question: 'What does the school rating represent?',