UK property intelligence
Property decisions, explained.
Sourced, dated UK property data and plain-English analysis, from first search to long-term management.
Example Investment Score of 72 out of 100 for a fictional terrace in Leeds, with one sub-score shown as not assessed.
- Data hosted in the UK
- Every value sourced and dated
- Accessible to WCAG 2.2 AA
- Referral partners disclosed
The problem
UK property work is fragmented at every stage.
Decisions and operations are spread across portals, datasets, device apps and spreadsheets. Each stage starts again from scratch.
Buyers and investors
Listings on several portals. Flood, school, crime and planning data elsewhere. Yield worked out by hand.
Homeowners and landlords
Certificate dates in calendars, repairs agreed by text, and one app for every smart device.
Managers and estates teams
Tenants, rent, leases, repairs and compliance in separate tools. Deadlines get missed.
Developers and builders
Appraisal, planning, cost and sales in different tools. No digital record at handover.
Nothing carries a property's data, provenance and history from first search to long-term operation.
What changes
What you stop doing.
PropSage removes the joins between tools: the copying, re-keying and chasing that sit between one stage and the next.
| Today | With PropSage | Availability |
|---|---|---|
| Today: Checking the same home on several portals | With PropSage: One search across PropSage listings and licensed feeds | Available first |
| Today: Hunting for flood, school and planning data on other sites | With PropSage: Location and property evidence in one view | Available first |
| Today: Rebuilding the yield spreadsheet for every property | With PropSage: Calculators that save every assumption, with purchase tax for the property's nation | Available first |
| Today: Figures with no source or date | With PropSage: Every value sourced, dated and labelled | Available first |
| Today: Certificate dates kept in calendars and folders | With PropSage: A compliance register that reminds you before expiry | Coming in Phase 2 |
| Today: Re-checking a whole appraisal when one assumption moves | With PropSage: Scenarios and sensitivity on the same record | Coming in Phase 2 |
| Today: Board packs assembled from several systems | With PropSage: One record and audit trail for every site | Coming in Phase 2 |
The platform
One record that follows the property.
What you learn when you search stays with the property as it is developed, let, managed and connected. Nothing is typed in twice.
One property record
Sourced, dated and confidence-scored
Available first
PropSage Discover: search, compare and list free.
Research Assistant
From a brief to a sourced shortlist
Describe what you want in plain English. Check how we have read your brief, then get a shortlist and report with every source cited.
- Always labelled as AI
- Says when it does not know
- Search by place, postcode, a drawn area or travel time
Example Research Assistant answer: how the brief was read, a cited result, and one requirement it could not check. Labelled as AI.
Comparison
Compare homes on the evidence
Property, location, schools, environment, safety, planning and finance, side by side, with the source under every row.
- Estimates shown as ranges
- Gaps marked "not available"
- Export with attributions
Example side-by-side comparison of two fictional homes in Leeds, with the source under every row, estimates shown as ranges and one value marked not available.
Investment Score
A score that shows its working.
The PropSage Investment Score weighs location, transport, schools, environment, affordability, rental potential and planning risk. You set the weights. It tells you what drove the result and what it could not assess.
- Your weights, saved as a profile you can reuse
- The main drivers, written in plain English
- Missing data flagged as "not assessed", never scored as zero
PropSage provides information and software, not surveying, legal or financial advice. The Investment Score is a decision-support tool, not a guarantee of performance or a substitute for a survey or valuation.
Example of a verified last-sold price with its source, retrieval date, licence and confidence.
Calculators
Calculators that keep the working
Mortgage, affordability, purchase tax, yields and cash flow. Inputs and assumptions are saved with every result.
- Purchase tax for the nation the property is in
- Rent shown as a range, with its method
- Checked against independent test cases
Example buy-to-let calculation for a fictional terrace in Sheffield: rent shown as an estimated range, gross and net yield ranges, and the saved assumptions.
List free, and always will be
Owners, agents, developers and renovators list for sale or to let at no charge. Listings are checked before they go live.
One search, one record
PropSage listings and licensed feeds, de-duplicated into one record per property.
Saved searches and alerts
Hear when something new fits, without checking several sites.
Suggestions that say why
Properties we think fit, and the reasons. Correct us and the suggestions improve.
Introductions to professionals
Brokers, surveyors, conveyancers and planners, introduced when you ask.
A source and date on every value
Verified facts, estimates and AI assessments, each labelled for what it is.
The platform
See the platform in 44 seconds.
A silent overview, from first search to long-term management. It plays only when you press play.
Transcript
Property information is scattered across portals, datasets and spreadsheets. PropSage puts it on one record, with every value sourced, dated and confidence-scored. Search, compare and list free. An illustrative Research Assistant shortlist for Bristol is shown, and labelled available first. A score that shows its working: an illustrative Investment Score, including a row marked not assessed. You set the weights. The score shows its drivers and flags what it could not assess. Every value has a source and a date. A verified last-sold price is shown. Verified facts, estimates and AI assessments are labelled differently. One record follows the property. Discover is available first. Develop and Manage are planned for Phase 2. Automate is planned for Phase 3. Built for scrutiny: data hosted in the UK, every value sourced and dated, accessible to WCAG 2.2 AA, and referral partners disclosed. PropSage. Wise counsel for the whole property lifecycle. Join early access at propsage.co.uk. PropSage provides information and software, not surveying, legal or financial advice.
Provenance is the product, not a footnote.
Every externally sourced value carries its source, licence, retrieval date, coverage and confidence.
Provenance
Every value has a source and a date.
Each figure shows where it came from, when it was retrieved and how confident we are. Verified facts, estimates and AI assessments are labelled differently, and missing data is flagged, never scored as zero.
Verified
From an authorised source such as HM Land Registry or the EPC Register, with the date we retrieved it.
Estimate
Calculated by a stated model or formula, shown as a range with its confidence.
AI-generated
Written by our assistant from sourced data, labelled as AI and linked to its citations.
Who it is for
Built for the people who move UK property forward.
- Homeowners Search, compare and list your home free, with the reasoning shown.Available first
- Property developers List new-build stock free today. Appraisal and handover tools are coming.Available first
- Construction and renovation Show renovated stock and get ready for project tools in Phase 2.Available first
- Corporate property teams One record for every site, lease and certificate. Coming in Phase 2.Coming in Phase 2
- Buyers and investors Yields, cash flow and an explained score, on sourced data.Available first
- Landlords and agents List vacancies free now; tenancy and compliance tools follow.Available first
Built for the UK
Built for all four nations.
Stamp duty in England and Northern Ireland, LBTT in Scotland and LTT in Wales. Tenancy rules that differ by nation. PropSage is designed around those differences, not around London.
| Nation | Applies | Collected by |
|---|---|---|
| England and Northern Ireland | Stamp Duty Land Tax (SDLT) | HM Revenue & Customs |
| Scotland | Land and Buildings Transaction Tax (LBTT) | Revenue Scotland |
| Wales | Land Transaction Tax (LTT) | Welsh Revenue Authority |
PropSage applies the rules for the nation where the property is. Rates and rules change; we show the version and effective date we used.
England · purchase tax: SDLT
Scotland · purchase tax: LBTT
Wales · purchase tax: LTT
Northern Ireland · purchase tax: SDLT
Roadmap
One phase at a time.
We do not build a module ahead of its phase. Each phase has one objective to prove.
Phase 0Now
Discovery
Confirm scope, pricing and the delivery plan.
Phase 1Next
The free tier
PropSage Discover: free listings, search, comparison, the explained score, calculators and the Research Assistant.
Phase 2Coming in Phase 2
Lifecycle
PropSage Manage and PropSage Develop on the same record, with integrated partner journeys.
Phase 3Coming in Phase 3
Connected property
PropSage Automate brings devices from many manufacturers onto one dashboard, as its own subscription.
How it works
Six principles behind every screen.
Authorised data, shown with its source. Analysis that explains itself. People accountable where decisions affect people.
- 01Authorised data only.We use licensed feeds and public datasets such as HM Land Registry, the EPC Register, the Environment Agency, Ofsted and Police.uk. We do not scrape websites.
- 02Every value sourced and dated.Verified facts, estimates and AI assessments are labelled differently. If a source is withdrawn, the value is marked unavailable.
- 03Missing data is flagged, never scored as zero.When we cannot assess part of the Investment Score, we say so and re-weight the rest.
- 04AI that cites its sources.Our assistants answer from PropSage data and documents, cite what they relied on, and say when they do not know. You are always told when you are talking to AI.
- 05People stay accountable.Where a decision affects a person, such as choosing a tenant, a named person makes it, not the software.
- 06Decision support, not advice.PropSage provides information and software, not surveying, legal or financial advice. We introduce regulated professionals through disclosed partners.
Partner services
Introductions, openly disclosed.
When you need a mortgage broker, insurer, surveyor, conveyancer or planner, we can introduce one. We tell you if we are paid for the introduction before you share any details.
How partner introductions work- Mortgage broker
- Insurer
- Surveyor
- Conveyancer
- Planner
Trust
Built for scrutiny from the first release.
Hosted in the UK (AWS London)
UK GDPR by design
Accessible to WCAG 2.2 AA
Customer data is not used to train third-party models
Certifications on our roadmap, claimed only once held
Questions
Common questions
Is PropSage free?
Listing a property and searching are free. Premium analysis, business and enterprise plans will be priced before launch.
Does PropSage give financial or legal advice?
No. PropSage provides information and software, not surveying, legal or financial advice. We can introduce regulated professionals, and we disclose any fee we receive.
Where is my data stored?
In the UK, on Amazon Web Services' London region. See the Trust Centre for details.
Does PropSage work in Scotland, Wales and Northern Ireland?
Yes. We design for the rules of each nation, for example SDLT, LBTT and LTT, and say where coverage of a dataset is limited.
PropSage provides information and software, not surveying, legal or financial advice.
