Terms of Use

Last updated: 17 August 2026

These terms govern your use of Hong Kong Lot Viewer ("the tool"). By creating an account, you agree to these terms.

The service

The tool lets you view and search Hong Kong lot boundaries using Hong Kong Government open data and APIs — including data from the Lands Department, Planning Department / Town Planning Board, Buildings Department, Rating and Valuation Department, Development Bureau, Transport Department, and Highways Department, obtained via the Common Spatial Data Infrastructure (CSDI) Portal, DATA.GOV.HK, and Esri China (Hong Kong) Ltd. (a third-party provider that republishes certain Hong Kong open-data layers in Esri/ArcGIS formats, not a government body). You may use the tool for both personal and commercial/professional purposes, including in the ordinary course of a property consultancy, valuation, surveying, or legal practice, where the terms and conditions applicable to the underlying dataset and source permit that use and are complied with — the CSDI Portal's and DATA.GOV.HK's own Terms of Use each expressly allow use of their Data "for both commercial and non-commercial purposes," subject to attribution and the other conditions they set out (see "Intellectual property" below). The tool may be offered through free, trial, subscription, licence, or other access arrangements at the operator's discretion; features, access levels, and pricing may change from time to time.

No affiliation with the Government

This tool is an independently operated product. It is not operated, endorsed, sponsored, or affiliated with the Government of the Hong Kong Special Administrative Region ("the Government"), the Lands Department, the Development Bureau / CSDI Portal, the Planning Department, the Town Planning Board, the Buildings Department, the Rating and Valuation Department, the Transport Department, the Highways Department, or any other government body. Some map layers are sourced from these departments' open data but republished via Esri China (Hong Kong) Ltd., a private company — not a government body. Any reference to a government department, dataset, third-party data provider, or trademark describes only the source of the underlying open data, and implies no relationship, licence, or endorsement between the operator and that department or company.

Tiers

Guest — no account needed. View the map, search by address or building name, and view Bus/Minibus Stops.
Trial user — create a free account to additionally unlock DD Lot number search (e.g. "DD124 Lot50"), a selection of map overlays and department datasets (Data / Statistic), and nearby-lots loading, for 1 week from registration. Once that window lapses, these lock again.
Pro (Personal Pro / Business Pro) — a paid tier, arranged separately (including via an authorised agent) and not available as self-service sign-up within the tool, that additionally unlocks further map overlays, dashboards, and export/organisation tools not included in the Trial tier.

Which specific features fall under each tier may change from time to time at our discretion, and is reflected in the tool's own interface (e.g. a "Pro" badge) rather than fixed by this list. We may also, at our discretion, extend an individual account's access beyond what's described above. Any such extension is not advertised within the tool and confers no ongoing entitlement beyond what we've granted.

Your account

You're responsible for keeping your password confidential and for all activity under your account. Provide accurate information when you sign up. We may suspend or terminate accounts that violate these terms, abuse the service, or misuse the underlying government APIs.

Acceptable use

You agree not to: use the tool for any unlawful purpose; scrape or automate requests against it or the underlying government APIs beyond normal interactive use; reverse engineer the tool; or interfere with its normal operation.

No warranty

The tool and the government data it displays are provided "as is" and "as available", with no warranty of accuracy, completeness, currency, or availability. The tool is not official advice and is not a substitute for official government records — always verify anything important directly with the relevant government department. It is intended as an information and mapping aid, and is not a substitute for title documents, approved plans, land registry records, statutory plans, survey measurements, or professional advice. Access to the underlying government open data and APIs — including those operated directly by government departments and those operated by third-party providers such as Esri China (Hong Kong) Ltd. — is outside our control and may be slow, unavailable, degraded, changed, restricted, rate-limited, suspended, cancelled, or permanently withdrawn at any time and without notice, for any reason, including server outages or downtime at the source, scheduled or unscheduled maintenance, policy changes, or the source discontinuing or shutting down the underlying API or dataset entirely. The tool, or any feature of it, may stop working — in whole or in part, temporarily or permanently — as an immediate result of any of the above, and we may suspend or permanently discontinue the affected feature, or the tool as a whole, immediately and without notice or liability to you — this is not a breach of these terms, and does not entitle you to a refund beyond what's stated under "Limitation of liability and indemnity" below.

Any area shown (marked with a "~", e.g. "~ 560 sq ft") is calculated from the lot's mapped polygon boundary — or, where supplied by the data source, its LOTAREA attribute — and is not a registered area, survey area, or any other official measurement. It is provided for informal reference only and must not be relied upon.

Limitation of liability and indemnity

To the maximum extent permitted by law, the operator disclaims all warranties, express or implied, and accepts no liability whatsoever — whether direct, indirect, incidental, special, or consequential — for any loss, damage, cost, or expense arising from your use of, or inability to use, the tool, from any error, omission, or inaccuracy in the data it displays, or from any action taken in reliance on it. You use the tool entirely at your own risk, and agree to indemnify and hold the operator harmless against any claim, demand, or proceeding arising from your unlawful use of the tool, your breach of these terms, or your use of the underlying government open data in breach of the CSDI Portal's or DATA.GOV.HK's own Terms of Use — including, in each case, any claim brought by the Government of the Hong Kong Special Administrative Region or any of its departments in connection with that use.

Cap on liability. To the maximum extent permitted by law, and without limiting the disclaimer above, the operator's total aggregate liability to you arising out of or in connection with the tool or these terms — however arising, whether in contract, tort (including negligence), or otherwise — shall not exceed the total subscription or licence fees actually paid by you to the operator for the tool in the 12 months immediately preceding the event giving rise to the claim. If you have paid no such fees (e.g. you use a free or trial tier), the operator's total aggregate liability to you shall not exceed HK$100. This cap does not apply to liability that cannot lawfully be limited or excluded, such as liability for death or personal injury caused by negligence, or for fraud. Nothing in these terms excludes or limits any right you have under applicable law that cannot lawfully be excluded or limited, including any non-excludable statutory consumer rights.

Intellectual property

Government data displayed by the tool remains subject to the intellectual property rights of the relevant Hong Kong Government department or, where a dataset is supplied by an organisation other than the Government itself, that organisation — the CSDI Portal and DATA.GOV.HK are distribution platforms, and Esri China (Hong Kong) Ltd. a third-party provider, none of which is itself the data's owner. The tool's own code, design, and compilation belong to its operator, other than the underlying government data itself. Use of the underlying government open data displayed by the tool — including any commercial use by you — is permitted under, and remains subject to, the CSDI Portal's Terms and Conditions of Use (portal.csdi.gov.hk/csdi-webpage/doc/TNC) and DATA.GOV.HK's Terms and Conditions of Use, both of which require the Government and the relevant data source to be clearly identified and their intellectual property rights acknowledged, and require the user to indemnify the Government and relevant organisations against claims arising from that use — obligations this tool's own attribution notices are designed to help you meet, but which remain yours as the end user of the data.

Ending your account

You may stop using the tool, or request deletion of your account and data, at any time by emailing info@hklotviewer.com. We may also suspend or terminate your access for violating these terms.

Changes to these terms

We may update these terms from time to time. Continued use of the tool after a change constitutes acceptance of the updated terms.

Governing law

These terms are governed by the laws of the Hong Kong Special Administrative Region.

Contact

Questions about these terms can be sent to info@hklotviewer.com.