About Streetary
Methodology, data sources and the limits of street-level comparisons
What is Streetary?
Streetary is a free, independent resource for exploring streets and nearby places in England and Wales. Its scoring framework has nine dimensions; each street's overall score uses only the dimensions with available data. Coverage is not complete, and a score is not a property valuation or a prediction of personal safety.
Our goal is to make neighbourhood-level data accessible to everyone — whether you are buying your first home, relocating for work, or simply curious about your own street.
Scoring Methodology
The overall score is a weighted average from 0 to 100. These are the configured weights before excluding unavailable dimensions:
| Dimension | Weight | What It Measures |
|---|---|---|
| Safety | 20% | Recorded incident counts and categories for the associated LSOA area; no population-adjusted rates |
| Daily Access | 15% | Proximity to supermarkets, GP surgeries, pharmacies, post offices |
| Transport | 15% | Distance to bus stops, rail stations, tube and tram stops |
| Green-space proximity | 10% | Green spaces, parks and natural areas nearby |
| Market Value | 10% | Recorded transaction activity from HM Land Registry; not a valuation or a return forecast |
| Family | 10% | Nearby schools, Ofsted ratings, primary and secondary phases |
| Energy Efficiency | 8% | Currently unavailable: EPC data is not included in published scores |
| Flood Risk | 7% | Environment Agency planning flood zones in England. Welsh NRW categories are displayed separately and are not converted into this score |
| Amenity proximity | 5% | Counts of recorded amenities and transport stops within 500m; not walking routes |
Weights are renormalised over available dimensions. Energy is currently unavailable; the flood score is limited to England. Welsh flood observations remain separate because the sources and categories differ. Transaction trends without verified comparison windows are withheld. Scores are heuristic benchmarks — a lower score means the street scored lower on our measured metrics, not that it is a bad place to live. Many factors that matter (community spirit, noise, views, character) are not captured by open data.
Data Sources
All data comes from publicly available, government or community open data sources:
| Source | What It Provides | Licence |
|---|---|---|
| Ordnance Survey Open Names | Named features used to identify streets and their coordinates | OGL v3.0 |
| ONS Census 2021 | Demographics, tenure, household composition by LSOA | OGL v3.0 |
| HM Land Registry | Recorded property transactions; dates and sample sizes vary by street | OGL v3.0 |
| police.uk | Recorded incidents aggregated to LSOA areas; not street-level or population-adjusted rates | OGL v3.0 |
| Ofsted | School inspection ratings in England; no equivalent Welsh coverage | OGL v3.0 |
| NaPTAN (DfT) | Public transport stops — bus, rail, tube, tram | OGL v3.0 |
| Environment Agency | Flood risk zones from Flood Map for Planning | OGL v3.0 |
| Natural Resources Wales (NRW) | Flood Risk Assessment Wales categories, shown separately from English planning zones | See the source attribution on each Welsh flood section |
| OpenStreetMap | Points of interest — shops, parks, amenities | ODbL |
Quality Controls
Automated checks assess street identity and the available evidence before publication. They cover:
- Identity — street, district and linked postcode records
- Coverage — which independent sources contribute usable observations
- Duplicates — potentially overlapping records and similar data profiles
- Specificity — whether the page contains information about this street
- Consistency — agreement between visible facts, descriptions and structured data
A missing source does not automatically remove a useful page. Publication also considers duplicate resolution and observed search demand. Automated checks do not replace a manual review of every street or guarantee that every record is correct.
Limitations
Streetary is a data tool, not professional advice. Important limitations include:
- Scores reflect available open data only — many quality-of-life factors are not captured
- Crime comparisons use recorded incidents in the associated LSOA statistical area, not a street-specific or population-adjusted crime rate
- Census data is at LSOA level (typically 1,000-3,000 people), not individual streets
- Street-level median prices are withheld when fewer than eight transactions are recorded; the sales count remains visible
- School proximity does not guarantee admission to that school
- Flood zones are modelled, not observed — localised flooding may not appear
Always consult qualified professionals before making property or relocation decisions.
How should I compare two streets?
Use the street comparison tool to view the available dimensions and sales counts side by side. Check which dimensions are missing before interpreting a difference in overall score. The same number can summarise different combinations of available evidence.
Does an unavailable value mean zero?
No. It means that usable evidence is missing or the value has been withheld. A missing flood observation does not establish low risk, and a withheld price does not mean that no homes were sold.
How recent is the information?
Each source has its own observation period and update schedule. Read the source dates and coverage shown with the data. A page's processing date is not the date of every observation or evidence of a new manual inspection.
Editorial standards & corrections
Streetary follows five commitments:
- Independence — no listings, no property portal commissions, no paid rankings, no sponsored inclusions.
- Transparency — every data source is public and cited; the scoring methodology is public and reproducible.
- Data recency — source providers publish on different schedules (police.uk and Land Registry monthly, Ofsted rolling, Census fixed). Streetary's imported snapshot may lag behind the provider. A "Record processed" date is not a manual review or the observation date of every source.
- Corrections — any factual correction is reviewed personally within 5 working days. Email [email protected] with the URL and the issue.
- Honest limitations — scores are relative, based on measurable open data. Community, character, noise and many quality-of-life factors are not captured; the Limitations section above states this openly.
Who Runs Streetary
Streetary is built and maintained by Yoel Castaño, an independent software developer working with UK open government data since 2025. He designed and runs the entire pipeline behind this site — the ingestion of 8+ UK government datasets, the 9-dimension scoring methodology described above, and the publishing system that produces the street pages and their source information.
Yoel also builds and maintains the Callejear network of hyperlocal open-data sites across Spain, France, the Netherlands, Belgium, Portugal and other European markets — applying the same principle: turn public data into accessible, honest street-level context, with no listings and no commissions.
Streetary is independently funded, hosts no property listings and earns no commissions from portals — rankings cannot be bought or influenced. Corrections and methodology questions are personally reviewed within 5 working days.
- Contact: [email protected]
- LinkedIn: linkedin.com/in/yoelcastanopeon
- Full author profile: Read more about Yoel Castaño →
Contact
Questions, corrections or data enquiries: [email protected].
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