Most renters only discover the problems after they have signed.
See what previous tenants experienced — before you commit.
Real experiences from real tenants.
Cardiff only · Try 14 Rowan Street
After finishing university I searched Cardiff's rental market for my first proper home — somewhere I could settle, feel proud of, call mine.
I felt the pressure every renter knows — sign quickly or lose it. So when I found somewhere that seemed right, I signed.
On moving day, the blanket that had been draped over the sofa during the viewing was gone. Underneath it was torn and filthy. The bed frame was broken. The mattress was old and uncomfortable. The drains smelled. The windows ran with condensation. The walls were damp.
To their credit, the landlord did eventually replace the sofa, the bed frame, and the mattress. But the process of getting issues acknowledged was slow, reluctant, and exhausting.
When I eventually moved out, the thing that stayed with me was not the frustration. It was the thought of the next person moving in — just as hopeful — with no idea what they were walking into.
I had information that could have helped them. There was nowhere to put it.
"You check reviews before a £30 dinner.
A tenancy costs £12,000 a year. Shouldn't you know more?"
Landlords know everything about a property — its history, its problems, its quirks. Tenants get a 20-minute viewing and are expected to commit thousands of pounds and months of their life.
KnowHouse gives tenants access to the one thing that closes the gap — the honest experience of the people who lived there before them.
We exist to close the information gap between landlords and tenants.
Your experience matters beyond your tenancy. KnowHouse gives you somewhere to put it.
Honest verified experience shared openly — not through attack or speculation.
Every review is verified and moderated. What you read here you can rely on.
KnowHouse is currently available in Cardiff only. We are building review density city by city. Bristol, Swansea, and beyond are coming soon.
Every person who wants to read reviews contributes one first. The platform grows with demand — not despite it.
Enter any Cardiff address or postcode. We check our database for reviews from previous tenants.
To read reviews you add a review of a property you have previously rented. One contribution unlocks the whole platform — forever.
A structured five-step process. Star ratings, issue checkboxes, and factual questions. Takes under four minutes.
Every review earns a ✓ Verified badge — confirming your email and that you are a real person.
To earn a ✓✓ Verified Tenant badge, upload a photo or screenshot of any document showing your name and the address you reviewed — a council tax bill, energy bill, tenancy agreement, or official letter. We check it manually, then delete it. Only the badge status is kept.
Every review is moderated before publishing. Verified Tenant reviews are backed by proof of residency.
Search any Cardiff address or be the first to review somewhere you have lived.
Last updated: June 2026 · KnowHouse Transparency Limited · knowhouse.uk
These Terms of Service govern your use of knowhouse.uk and any related services operated by KnowHouse Transparency Limited, a company registered in England and Wales. By accessing or using KnowHouse you agree to be bound by these terms. If you do not agree, do not use the platform.
KnowHouse is a property transparency platform that enables previous tenants to submit structured reviews of residential rental properties. The platform operates a contribute-to-unlock model — users must submit a review of a property they have previously rented in order to access reviews submitted by others.
You must be at least 18 years old to use KnowHouse. By using the platform you confirm that you are 18 or over and that any information you provide is accurate and based on your direct personal experience.
KnowHouse reviews are entirely structured — star ratings, predefined issue categories, and fixed-option factual questions. There are no freeform text fields. This means it is structurally impossible for a reviewer to name, describe, or otherwise identify any private individual through the review process.
By submitting a review you confirm that:
You retain ownership of the content you submit. By submitting a review you grant KnowHouse Transparency Limited a non-exclusive, royalty-free, perpetual licence to publish, display, and use your review on the platform and in aggregated data products.
All reviews are subject to pre-publication moderation. KnowHouse Transparency Limited reserves the right to refuse publication of any review that, in our reasonable judgment, breaches these terms, contains defamatory material, identifies private individuals, or is otherwise unlawful. We may edit reviews for legal compliance before publication. We may remove published reviews at any time if we determine they breach these terms.
KnowHouse uses a fully structured review format — star ratings and predefined categories only. There are no freeform text fields. This architecture means reviews cannot contain defamatory statements about identifiable individuals, as no mechanism exists to name or describe any person.
KnowHouse nonetheless operates in accordance with the Defamation Act 2013 and maintains a clear complaints procedure. If any party believes that a structured rating or selection is demonstrably false and damaging, they may notify us at [email protected]. We will investigate all complaints promptly and aim to respond within 48 hours.
KnowHouse Transparency Limited will cooperate with legitimate legal processes where required by law.
If you are a landlord, letting agent, or property owner and believe a review about your property contains false or defamatory content, please contact us at [email protected] with the following information: the URL or address of the reviewed property, the specific content you believe is false or defamatory, and your contact details. We will acknowledge your complaint within 24 hours and aim to resolve it within 48 hours.
You must not use KnowHouse to submit ratings you know to be false or misleading, submit reviews of properties you have not personally rented, attempt to manipulate or game the contribute-to-unlock system, submit multiple reviews of the same property, submit reviews on behalf of another person without their knowledge, or attempt to reverse-engineer, scrape, or copy the platform or its data without our written permission.
The KnowHouse brand, platform design, KnowHouse Score methodology, and aggregated data products are the intellectual property of KnowHouse Transparency Limited. You may not reproduce, distribute, or commercially exploit any part of the platform without our written permission.
Reviews published on KnowHouse represent the personal opinions and experiences of individual tenants. KnowHouse Transparency Limited does not verify the accuracy of every factual claim made in reviews beyond the moderation process described above. We make no warranties about the completeness, accuracy, or reliability of any review. You should use reviews as one source of information among many when making rental decisions.
To the maximum extent permitted by law, KnowHouse Transparency Limited shall not be liable for any loss or damage arising from your use of the platform, reliance on any review published on the platform, or any decision made on the basis of information provided by the platform. Our total liability to you in any circumstances shall not exceed £100.
We may update these Terms of Service at any time. We will notify registered users of material changes by email. Continued use of KnowHouse after changes are posted constitutes acceptance of the revised terms.
These terms are governed by the laws of England and Wales. Any disputes shall be subject to the exclusive jurisdiction of the courts of England and Wales.
KnowHouse Transparency Limited
[email protected]
[email protected]
These terms have been prepared for informational purposes. KnowHouse Transparency Limited recommends that you seek independent legal advice if you have any questions about your rights or obligations under these terms.
Last updated: June 2026 · KnowHouse Transparency Limited · knowhouse.uk
This Privacy Policy explains how KnowHouse Transparency Limited collects, uses, stores, and protects your personal data when you use knowhouse.uk. We are committed to handling your data in accordance with the UK General Data Protection Regulation (UK GDPR) and the Data Protection Act 2018.
KnowHouse Transparency Limited is the data controller for all personal data collected through knowhouse.uk. Contact us at [email protected] with any data protection queries.
Account data. When you register or submit a review we collect your email address. This is used to verify your identity, maintain your account, and send you notifications you have requested.
Review data. We collect the structured review information you submit — star ratings, issue categories, factual responses, and any optional freeform text. This data is associated with your account and the reviewed property address.
Verification documents. If you choose to apply for a Verified Tenant badge, we collect a document showing your name and address at the reviewed property. This document is used solely to verify your tenancy and is permanently deleted once verification is complete. Only the verified status is retained — not the document itself.
Notification requests. If you request email notification when a property receives its first review, we collect your email address for this purpose only.
Usage data. We collect anonymised analytics data about how the platform is used — pages visited, search queries, and interaction patterns. This data does not identify individual users and is used solely to improve the platform.
We process your personal data on the following legal bases under UK GDPR:
Verification documents submitted for the Verified Tenant badge are treated with particular care. They are stored in a private, access-controlled storage environment. They are accessible only to KnowHouse Transparency Limited for verification purposes. They are permanently and irreversibly deleted immediately after verification is complete — typically within 5 working days. We do not share, sell, or otherwise disclose verification documents to any third party under any circumstances.
By uploading a verification document you consent to this processing. You may withdraw your application at any time before verification is complete by contacting [email protected].
We do not sell your personal data. We do not share your personal data with third parties for marketing purposes. We may share data with the following categories of recipients:
Under UK GDPR you have the following rights regarding your personal data:
To exercise any of these rights please contact us at [email protected]. We will respond within one calendar month. You also have the right to lodge a complaint with the Information Commissioner's Office (ICO) at ico.org.uk if you believe we have not handled your data lawfully.
KnowHouse uses privacy-respecting analytics that do not use cookies and do not track individuals across websites. We do not use advertising cookies or share behavioural data with advertising networks. No cookie consent banner is required for our current analytics setup.
We take appropriate technical and organisational measures to protect your personal data against unauthorised access, loss, or disclosure. These include encrypted data transmission (HTTPS), access-controlled storage for sensitive data including verification documents, and restricted access to personal data within our organisation. No method of transmission over the internet is completely secure. We cannot guarantee absolute security but we are committed to protecting your data to the highest reasonable standard.
Some of our service providers may process data outside the UK. Where this occurs we ensure appropriate safeguards are in place in accordance with UK GDPR, including standard contractual clauses or adequacy decisions.
KnowHouse is not intended for use by anyone under the age of 18. We do not knowingly collect personal data from anyone under 18. If you believe a child has submitted data to our platform please contact us immediately at [email protected].
We may update this Privacy Policy from time to time. We will notify registered users of material changes by email and will always publish the date of the most recent update at the top of this page. Continued use of KnowHouse after changes are posted constitutes acceptance of the revised policy.
For any data protection queries, requests to exercise your rights, or complaints about how we handle your data:
KnowHouse Transparency Limited
[email protected]
[email protected]
For complaints to the regulator:
Information Commissioner's Office
ico.org.uk
0303 123 1113
This Privacy Policy has been prepared in accordance with UK GDPR and the Data Protection Act 2018. KnowHouse Transparency Limited recommends seeking independent legal advice if you have specific data protection concerns.