Exploiting housing and real estate market information: Regulations from March 1, 2026

Exploiting housing and real estate market information: Regulations have become an essential need for investment, business, and asset management activities. From March 1, 2026, a new legal framework sets specific requirements regarding authority, procedures, and the scope of data access. Long Phan Consulting Company analyzes these new regulations and provides guidance on legal data exploitation to mitigate risks in practical application under Decree 357/2025/NĐ-CP.

Regulations on accessing information and data on housing and the real estate market effective from March 1, 2026

Article 33 of Decree 357/2025/NĐ-CP (effective from March 1, 2026) specifies the exploitation of information and data on housing and the real estate market as follows:

1. The Ministry of Construction is entitled to exploit all information and data integrated, connected, shared, provided, and updated on the information system and database of housing and the real estate market. Data exploitation activities related to personal data and master data must comply with the law on personal data protection, national data architecture frameworks, and national data management/governance frameworks. Data access is performed through a decentralization and monitoring mechanism with clearly described purposes; sensitive data must be anonymized or granted special access rights, including:
   • Data shared and connected from national databases on population, land, construction, planning, and specialized databases on investment, finance, tax, banking, and notarization of ministries and branches as prescribed in Article 28 of Decree 357/2025/NĐ-CP.
   • Information and data from Provincial People’s Committees as prescribed in Article 29 of Decree 357/2025/NĐ-CP.
2. Ministries and branches specified in Article 28 of Decree 357/2025/NĐ-CP are entitled to exploit information and data to serve their respective state management tasks. Exploiting housing and real estate market data outside their management scope requires approval from the management agency of the housing and real estate market information system.
3. Provincial People’s Committees are entitled to exploit all housing and real estate market data within their local jurisdiction.
4. Organizations and individuals wishing to exploit specialized and detailed information/data on housing and the real estate market as prescribed in Appendix VI attached to Decree 357/2025/NĐ-CP shall send a request form (using the template in Appendix III) to the Ministry of Construction via: online submission on the National Public Service Portal, direct submission at the one-stop-shop of the Ministry of Construction, postal services, or the administrative procedure handling system of the Ministry of Construction.
5. Forms of exploiting and using information on housing and the real estate market include:
   • Direct exploitation and use through the Web Portal of the housing and real estate market information system.
   • Exploitation and use through online data connection and sharing between information systems.
   • Exploitation and use by sending written requests to competent authorities.
6. Within 07 days from the receipt of a registration for access/use rights, the Ministry of Construction shall consider granting access, exploitation, and use rights electronically or via the Notification template in Appendix IV. In case of refusal, a response stating the reason must be provided using the template in Appendix V.
7. State secrets, information related to the identity data of other citizens, and information related to the business activities of enterprises shall not be exploited except for serving the activities of state management agencies.
8. Foreign organizations may only access and exploit information/data through secure APIs or anonymous copies; they are not allowed to copy original data containing identity information.
9. Sharing or transferring information/data cross-border must comply with the law on data before provision.

>>> See more: Official Land Data Request Procedure

Disclosing information about housing and the real estate market

The disclosure of information is an obligation of the management agency to ensure transparency in the real estate market, as stipulated in Article 35 of Decree 357/2025/ND-CP, specifically as follows:

1. The Ministry of Construction publishes aggregated information on housing and the real estate market nationwide on the housing and real estate market information system at the website https://batdongsan.xaydung.gov.vn, on a quarterly basis: Before the 15th day of the first month of the quarter following the publication quarter.
2. Provincial People’s Committees shall publish aggregated information on housing and the real estate market within their jurisdiction on the portal of the housing and real estate market information system and on the local government’s managed website on a quarterly basis: Before the 15th day of the first month of the quarter following the publication quarter.

Principles for building, managing, and utilizing information systems and databases on housing and the real estate market

The housing data system is operated on the principles of focus, uniformity, and absolute security as prescribed in Article 4 of Decree 357/2025/NĐ-CP, establishing a management model from central to local levels with strict technical standards:

• Centralized Management: Built and managed uniformly from central to local levels. The Ministry of Construction manages it nationwide; Provincial People’s Committees collect, update, and manage it locally.
• Timely Service: Ensuring timely support for state management, national defense, security, socio-economic development, and transparency.
• Authorized Access: Relevant agencies, organizations, and individuals are granted access rights to initiate, share, update, and search data according to state-defined decentralization.
• Open and Standardized: Built with open features and standards for databases, APIs, and decentralization models; meeting national security standards and architecture.
• Data Cleaning and Authentication: Collected data must be cleaned, authenticated from legal sources, and reflect the true legal status. Every record is logged to ensure traceability of edits and changes.
• State Property: Information and data formed from the system are state assets managed by the Ministry of Construction.
• Strict Security: Managed strictly to ensure information safety, state secrets, and personal privacy; ensuring efficiency and convenience for administrative procedures.
• Integrated Disclosure: Information and figures disclosed on the Portal are integrated data.
• Purpose Compliance: Use of data must ensure the correct purpose and comply with laws on digital connection, data, electronic transactions, and access to information.

>>> See more: Principles for the National Housing and Real Estate Database (Effective March 1, 2026)

Long Phan Consulting Company provides consulting services on information and data exploitation related to housing and the real estate market

Long Phan Consulting Company provides in-depth services for the process of exploiting housing and real estate market information:

• Analyze customer data usage needs and compare them with current legal regulations to determine the types of information permitted to be accessed, the authority to provide it, and the limitations on its use.
• Instructions for preparing request forms, proposals, and supporting documents proving the purpose of use, following the prescribed forms and required documents; verifying their validity before submission.
• Submit applications through the public service portal or in person; monitor processing progress, provide additional documents as requested, and handle any issues that arise during the evaluation process.
• Analyze the legal validity of documents refusing to provide data; draft complaints, petitions, or explanatory documents to protect the legitimate rights and interests of clients.

Frequently Asked Questions about Exploiting housing and real estate market information

Below are some frequently asked questions about exploiting housing and real estate market information; please refer to them:

Can an individual request detailed information about a specific real estate project?

Individuals who need to access specialized and detailed information and data on housing and the real estate market as stipulated in Appendix VI attached to Decree 357/2025/ND-CP may submit a request form using the template in Appendix III attached to Decree 357/2025/ND-CP to the Ministry of Construction through the following methods: online submission via the National Public Service Portal, direct submission at the one-stop service department of the Ministry of Construction, submission via postal service, or submission through the Ministry of Construction’s administrative procedure processing system.

(Legal basis: Clause 4, Article 33 of Decree 357/2025/ND-CP.)

What is the maximum timeframe for the Ministry of Construction to respond to requests for data access?

Within no more than 7 days from the date of receiving the application for the right to access and use information and data on housing and the real estate market, the Ministry of Construction shall consider granting access, exploitation, and use rights to information and data on housing and the real estate market electronically or according to the Notification form in Appendix IV attached to Decree 357/2025/ND-CP. In case of refusal to grant the right to access and use, a response must be provided stating the reasons according to the Notification form in Appendix V attached to Decree 357/2025/ND-CP.

(Legal basis: Clause 6, Article 33 of Decree 357/2025/ND-CP.)

Are foreign businesses allowed to copy original housing data in Vietnam?

Foreign organizations may only access and utilize information and data through secure APIs or anonymized copies of data as prescribed. Direct access, copying, downloading, or storing of original data containing personally identifiable information is prohibited in any form. The use of data must be for the intended purpose and comply with information security and privacy requirements as stipulated by law.

(Legal basis: Clause 8, Article 33 of Decree 357/2025/ND-CP.)

What types of information are strictly prohibited from being accessed on real estate data systems?

It is strictly prohibited to exploit information classified as state secrets, personal identification data of other citizens, and information related to the business secrets of enterprises, except for the purpose of state management.

(Legal basis: Clause 7, Article 33 of Decree 357/2025/ND-CP.)

Is the housing information system connected to tax and banking data?

Yes, the information system and database on housing and the real estate market are built with openness and standardized database, API, and access control models; complying with the national data architecture framework and security standards; having economic and technical norms described by competent state agencies; ensuring data connectivity and sharing with the national comprehensive database and other relevant specialized databases; and data in connected and shared databases is not re-collected.

(Legal basis: Clause 4, Article 4 and Point a, Clause 1, Article 33 of Decree 357/2025/ND-CP.)

Will data already in the national database be collected again when building the housing information system?

No, according to the principle of connectivity and sharing, data fields that already exist in interconnected national databases do not need to be re-collected by the management agency.

(Legal basis: Clause 4, Article 4 of Decree 357/2025/ND-CP.)

Who is the agency responsible for cleaning and verifying local data?

The provincial People’s Committee is the agency directly responsible for collecting, updating, cleaning data, and managing the exploitation of databases within the local area.

(Legal basis: Clauses 1 and 5, Article 4 of Decree 357/2025/ND-CP.)

Conclusion

Strict compliance with the regulations on exploiting housing and real estate market information ensures legality in business activities. Promptly grasping Decree 357/2025/NĐ-CP helps minimize legal risks and optimizes the use of national data resources. If you have any inquiries, please contact Long Phan Consulting Company via hotline 1900636389.