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Professional property investment tools for UK investors. Deal analysis, mortgage comparison, stamp duty, EPC, bridging calculators, renovation specifications and much more.

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


Propty.uk is a UK-focused property investment platform offering 17 professional-grade tools across four areas: deal analysis (Deal Analyser, SDLT, bridging, land appraisal, rental benchmarking, HMO yield, mortgage comparison), renovation (refurbishment specs, HMO and mixed-use compliance),...
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As answered by people managing Propty.uk and Opalstack.
Propty.uk's answer
Propty combines 17 professional-grade tools across the entire UK property investment lifecycle — deal analysis, renovation, environmental, and financial — in one unified platform. Most competitors offer single-purpose calculators or AI-generated reports. Propty gives investors transparent, controllable tools built specifically around UK regulations (SDLT, Section 24, HMO compliance, EPC requirements), so they can run their own numbers without relying on a black box or paying for expensive mentorship.
Propty.uk's answer
Three reasons: depth, compliance, and price. Depth — 17 specialised tools versus single-purpose calculators scattered across the web. Compliance — UK-specific rules (HMO, mixed-use, EPC, Section 24, SDLT surcharges) are built in, not bolted on. Price — a self-serve £12.99/month subscription replaces £3,000 property courses and £200/month enterprise software. Transparent, data-led, and guru-free.
Propty.uk's answer
UK property investors and landlords — particularly those managing portfolios of 1 to 20 properties who want professional-grade analysis without enterprise pricing or property-guru mentorship. The core user is data-led, hands-on, and wants to control their own underwriting rather than outsourcing judgement to an AI or an adviser.
Propty.uk's answer
Propty was built in response to the state of UK property investment tools — overpriced courses, surface-level calculators, and AI products that generate reports without showing their working. The aim was a single platform of professional, transparent tools covering every stage of a deal: sourcing, underwriting, renovation, compliance, financing, and exit. Built for serious investors who want to do the maths themselves, properly, with UK regulation built in from day one.
Propty.uk's answer
React, Vite, Tailwind CSS, Firebase (authentication and tenant data), Stripe (subscriptions), and Cloudflare Pages (hosting).
Propty.uk's answer
Propty is a consumer SaaS product — the customer base is individual subscribers rather than named enterprise accounts. If the form requires a list, the most accurate framing is by segment:
UK buy-to-let landlords HMO and mixed-use property investors Property sourcers and deal packagers
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