
CasaValidator
Rightmove
PropertyXRay.com.au
Zoopla
London property AI, backed by 2M Land Registry sales. Ask plain-English questions about London property prices, trends and affordability. Open data, open calculations. £1.99 for 10 queries.
LayerStack’s Arm-based cloud virtual machines, powered by cloud-optimized CPU based on Arm architecture that deliver excellent cost-effective processing power, allowing you to easily complete the most demanding application development.

Website, pricing, platforms and company facts side by side.
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| Website | openprop.co.uk | layerstack.com |
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| Company | Startup from the United Kingdom · 1 - 9 employees · 2026 | — |
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In their own words, as submitted to SaaSHub.

OpenProp is an AI property analyst for the London residential market. Ask anything in plain English — "median flat price in Lewisham 2024", "is Tower Hamlets a buyers' market", "where can a £450k budget actually reach" — and get an answer computed live from 1.76...
No description of LayerStack Arm-based Cloud Server yet.
What each product offers, as listed by its team.

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An editorial look at what each product does well and who it suits.

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Overall verdict
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How often each product is chosen within a category, 0–100% relative to the other.

As answered by people managing OpenProp.co.uk and LayerStack Arm-based Cloud Server.
OpenProp.co.uk's answer
OpenProp computes every answer live from 1.76M HM Land Registry transactions instead of summarising scraped portal listings or relying on an LLM's memory. A multi-agent router sends each question to a purpose-built specialist (market analysis, borough comparison, planning evidence, rent-vs-buy), so answers come back with the underlying numbers, charts, and transaction counts — not a confident guess.
OpenProp.co.uk's answer
PropertyData and LandInsight cost £50–£500/month and require a property-industry login. Zoopla and Rightmove show asking prices, not sold prices. ChatGPT hallucinates London boroughs. OpenProp is £1.99 for 10 queries, one-off, no subscription — answers are auditable against the raw Land Registry source on every query, and every answer ships with the chart or heatmap that backs it.
OpenProp.co.uk's answer
First-time buyers, renters deciding which borough to commit to, family upsizers, relocators moving into London, planning consultants and residents preparing objection evidence, and journalists who need defensible numbers fast. Anyone who needs a real answer about London property without paying agency rates or trusting a chatbot.
OpenProp.co.uk's answer
Built by a solo data scientist who got tired of watching friends make six-figure London property decisions on the back of Rightmove asking prices and Zoopla "estimates." Open data exists — HM Land Registry publishes every London sale under OGL v3.0 — but it's a 5GB CSV most people can't open. OpenProp is the layer that turns that public dataset into plain-English answers anyone can use.
OpenProp.co.uk's answer
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