WHAT IS 1/500 PLANNING? DOCUMENTS, PROCEDURES, AND KEY LEGAL ISSUES TO KNOW

What Is a 1/500 Detailed Planning? Documents, Procedures, and Key Legal Issues

1/500 detailed planning is a common term used to refer to a detailed planning scheme whose drawings are presented at a scale of 1/500.

Simply put, a 1/500 scale means that 1 unit of measurement on the drawing corresponds to 500 units of measurement in reality. For example, 1 cm on the drawing corresponds to 5 m on the actual site.

However, it is important to note that 1/500 refers to the drawing scale and is not the name of an independent legal procedure.

Detailed planning may specify various elements of the planned area, including:

• Boundaries and scope of the area.
• Land-use functions.
• Land-use structure.
• Population.
• Building density.
• Building height.
• Floor area ratio (FAR).
• Building setbacks.
• Transportation system.
• Technical infrastructure.
• Architectural and landscape space.
• Location and scale of buildings.

Under the current legal framework, the preparation, appraisal, approval, and management of urban and rural planning are governed by the Law on Urban and Rural Planning and its implementing regulations. Law No. 47/2024/QH15 took effect on July 1, 2025; subsequently, Law No. 144/2025/QH15 amended and supplemented a number of provisions and took effect on January 1, 2026.

What Does 1/500 Planning Mean for a Real Estate Project?

In real estate project development, detailed planning plays an important role because it helps concretize a development plan within a defined area.

1. Determining the Land-Use Structure

The planning may identify areas designated for:

• Residential land.
• Transportation land.
• Green space.
• Public facilities.
• Technical infrastructure.
• Other land-use functions.

This provides a basis for businesses to assess the development potential of their land bank and determine their product strategy.

2. Determining Construction Planning Indicators

Indicators such as building density, building height, floor area ratio, and spatial organization requirements directly affect the project's development plan.

Therefore, when assessing a land bank, businesses need to consider planning indicators rather than focusing solely on the size of the land parcel.

3. Determining the Infrastructure System

Detailed planning also presents the organization of transportation and relevant technical infrastructure systems.

For urban areas, residential developments, or large-scale projects, this is particularly important when assessing project feasibility.

4. Serving as a Basis for Subsequent Development Steps

Approved planning may serve as an important basis for carrying out subsequent steps in accordance with the law.

However, businesses should understand that planning is only one part of the project's overall legal framework.

What Is the Difference Between 1/500 and 1/2000 Planning?

1/500 and 1/2000 planning are commonly mentioned when businesses study planning for project development.

They can be generally distinguished as follows:

Criteria	Planning at 1/2000 Scale	Planning at 1/500 Scale
Level of detail	More general	More detailed
Scope	Usually broader	Usually more specific
Purpose	Provides spatial organization orientation at a broader scale	Concretizes spatial organization and land-use plans
Land use	Provides orientation appropriate to the planning level	More specific to individual areas/land parcels under the planning scheme
Infrastructure	Presented according to the relevant orientation and network	Further detailed within the planning area

However, it should not be mechanically understood that every project must undergo 1/2000 planning before 1/500 planning.

The type of planning required must be determined based on the planning system applicable to the area, the nature of the project, the planning scope, and the applicable laws and regulations.

Therefore, when studying a specific project, it is necessary to consider the entire relevant planning system, rather than looking only at the drawing scale.

Is 1/500 Planning Mandatory?

Not every real estate project is automatically required to have 1/500 planning.

Whether detailed planning is required depends on the type of planning, location, scope, nature of the project, existing planning system, and applicable legal regulations at the time of implementation.

Therefore, the question “Is 1/500 planning mandatory?” cannot be answered with a single rule applicable to all projects.

When assessing a project, businesses should check:

1. Whether the area already has detailed planning.
2. Whether there is already planning at an appropriate level to serve as a basis for implementation.
3. Which category the project falls under under the laws on urban and rural planning.
4. Whether new planning or planning adjustments are required.
5. Whether the existing planning remains consistent with the project's development plan.

This is also why businesses should not rely solely on advertising statements such as “the project already has 1/500 planning” to assess the project's overall legal status.

What Documents Are Included in 1/500 Planning?

The specific document set depends on the type of planning and the circumstances under which the planning is prepared. The current legal framework is guided by Decree No. 178/2025/ND-CP, as amended and supplemented by Decree No. 34/2026/ND-CP, together with detailed regulations issued by the Ministry of Construction.

In general, planning documentation may include the following main groups:

1. Planning Task Documents

The planning task sets out the basic requirements for preparing the planning scheme, such as:

• Scope and boundaries.
• Area size.
• Nature of the area.
• Planning objectives.
• Spatial organization requirements.
• Indicators to be studied.
• Infrastructure requirements.

2. Planning Scheme Explanatory Report

The explanatory report presents the basis for preparing the planning scheme, existing conditions, development orientation, and solutions for spatial organization, land use, technical infrastructure, and other relevant matters.

3. Planning Drawings

The drawings visually present the contents of the planning scheme at an appropriate scale. In applicable cases, detailed planning may be presented at a 1/500 scale.

4.Planning Management Regulations

This section helps establish management requirements and control the implementation of the planning after approval.

5. Related Documents

Depending on the circumstances, additional documents may include surveys, existing-condition maps, specialized technical documents, and other materials supporting the preparation and appraisal of the planning scheme.

Note: A fixed list of documents should not be applied to every project. The required documentation must be determined based on the specific type of planning and the regulations applicable at the time the planning is prepared.

What Are the Steps in the 1/500 Planning Procedure?

The 1/500 planning procedure can generally be visualized as the following sequence:

Determine requirements → Prepare documents → Prepare planning scheme → Collect opinions → Appraisal → Approval → Public disclosure and implementation

However, the specific procedure may vary depending on the circumstances and the competent authority.

1. Step 1: Determine the Scope and Necessity of Planning

First, it is necessary to determine whether the area falls within a case requiring detailed planning, the planning scope, and its consistency with the existing planning system.

2. Step 2: Prepare the Planning Task and Required Documents

The entities responsible for organizing the planning process prepare the planning task, existing-condition data, maps, and other documents required for preparing the planning scheme.

3. Step 3: Prepare the Planning Scheme

Based on the planning task and collected data, the planning scheme is prepared with contents relating to land use, spatial organization, architecture, transportation, and technical infrastructure.

4. Step 4: Collect Opinions

Depending on the circumstances, opinions on the planning documents may be collected from relevant authorities, organizations, residential communities, and other relevant parties in accordance with the law.

5. Step 5: Appraisal

The planning documents are appraised by the competent authority in accordance with the prescribed legal procedures.

The appraisal aims to assess the planning scheme's compliance with planning requirements and other relevant matters.

6. Step 6: Approval

After the appraisal process is completed and the requirements are satisfied, the planning scheme is submitted to the competent authority for consideration and approval.

The specific approving authority depends on the type and scope of planning and the applicable decentralization framework.

7. Step 7: Public Disclosure and Implementation

After approval, the planning is publicly disclosed and implemented in accordance with regulations.

Under the current legal framework, approved planning contents must be publicly disclosed within the statutory period, except for information classified as state secrets.

Which Authority Has the Power to Approve 1/500 Planning?

The competent authority cannot be determined solely based on the term “1/500.”

The competent authority depends on:

• Type of planning.
• Planning scope.
• Scale.
• Location.
• Nature of the area.
• Decentralization and delegation of authority under current law.

Therefore, when implementing a specific project, businesses need to identify all three stages:

Planning authority → Appraisal authority → Approving authority

Correctly identifying the competent authority from the outset helps minimize the risk of having to revise documents or repeat procedures.

Key Legal Issues Regarding 1/500 Planning

The legal status of 1/500 planning is an issue that businesses and real estate buyers need to pay particular attention to.

The most important point is:

Having 1/500 planning does not mean that the project has completed all legal procedures.

Planning is only one component of the project's legal framework.

Depending on the project, a business may still have to complete procedures relating to:

• Investment.
• Land.
• Land-related financial obligations.
• Planning.
• Design.
• Construction.
• Environment.
• Fire prevention and firefighting.
• Conditions for conducting real estate business.
• Acceptance and commissioning of the project.

Therefore, when assessing a project's legal status, one should not ask only:

“Does the project have 1/500 planning?”

Instead, the broader question should be:

“What stage of the legal process is the project currently at, and what procedures remain to be completed?”

Can Construction Begin Immediately Once 1/500 Planning Is Approved?

Not necessarily.

Approved planning is only one of the bases for project implementation. Construction also depends on other procedures and conditions under construction, land, investment, and other relevant laws.

Therefore:

Having 1/500 planning ≠ being immediately authorized to construct.

Businesses need to review all legal conditions applicable to the construction works and the project before commencing construction.

Can Land Lots Be Sold Once 1/500 Planning Is Approved?

1/500 planning alone cannot be used to conclude that land lots are legally eligible for sale.

The ability to put real estate products on the market depends on the type of product, the project's legal status, and the applicable legal conditions for conducting real estate business.

Therefore, buyers should not rely solely on the statement:

“The project already has 1/500 planning”

to conclude that the product is legally eligible for transaction.

Additional legal documents and business conditions applicable to the specific type of product must be reviewed.

Can 1/500 Planning Be Adjusted?

It may be adjusted in cases permitted by law.

Depending on the nature and extent of the changes, an adjustment may involve:

• Scope of adjustment.
• Contents to be changed.
• Adjustment documents.
• Collection of opinions.
• Appraisal.
• Approval of the adjustment.

Businesses should not arbitrarily change important contents of approved planning without first determining the legal requirements applicable to the adjustment.

In particular, changes relating to land-use structure, transportation, construction indicators, or spatial organization may significantly affect the project's development plan.

Key Legal Issues to Check When Reviewing 1/500 Planning

When reviewing a project, one should not look only at planning images or drawings.

At a minimum, the following groups of information should be checked:

1. Planning Approval Decision

Check:

• Decision number.
• Date of issuance.
• Issuing authority.
• Scope of application.
• Approved contents.

2. Land Boundaries

Compare the boundaries shown in the planning documents with the actual land area.

3. Land-Use Structure

Determine the area and function of each type of land.

4. Planning Indicators

Check indicators such as:

• Building density.
• Building height.
• Floor area ratio.
• Population.
• Setback.
• Building scale.

5. Transportation

Check:

• Roads.
• Right-of-way width.
• Transportation connections.
• Planned roads.

6. Technical Infrastructure

Review the following systems:

• Water supply.
• Drainage.
• Electricity supply.
• Wastewater treatment.
• Other technical infrastructure.

7. Consistency with Higher-Level Planning

The detailed planning must be reviewed in relation to the broader relevant planning system.

8. Overall Legal Status of the Project

This is a particularly important step.

Planning is only one part of the project's legal status. Businesses and investors should also review documents relating to investment, land, construction, and business eligibility.

Common Mistakes When Assessing 1/500 Planning

1. Looking Only at the Drawings Without Checking the Approval Decision

The drawings should be reviewed together with the approval decision and related documents.

2. Equating 1/500 Planning With “Full Legal Approval”

This is a common mistake.

Approved planning does not mean that the project has completed all procedures relating to land, investment, construction, and real estate business.

3. Failing to Check the Latest Version of the Planning

If the planning has been adjusted, relying on outdated documents may lead to an inaccurate assessment of the project.

4. Focusing Only on Residential Land Area

A project may also include transportation land, green space, public facilities, and technical infrastructure.

Therefore, residential land area does not always accurately reflect the development potential of the entire land bank.

5. Failing to Compare Planning With Actual Site Conditions

The actual boundaries, area, and site conditions should be checked to identify inconsistencies between the documents and the physical site.

Is 1/500 Planning the Final Step in a Project's Legal Process?

No.

1/500 planning is only one link in the project development process.

The overall process can be illustrated as:

Land bank research → Investment → Land → Planning → Design → Construction → Sales/Business → Handover

Depending on the project, the sequence and required procedures may vary.

The important point is that businesses must determine where the planning stage sits within the project's overall legal roadmap.

Frequently Asked Questions About 1/500 Planning

1. What Is 1/500 Planning?

1/500 planning is a common term for detailed planning represented by drawings at a 1/500 scale. It helps concretize spatial organization, land use, infrastructure, and development indicators within the planning area.

2. Is 1/500 Detailed Planning Mandatory?

Not every project is automatically required to prepare detailed planning at a 1/500 scale. The applicable type of planning must be determined based on the project type, location, existing planning system, and applicable legal regulations.

3. What Are the Steps in the 1/500 Planning Procedure?

In general, the process may include determining requirements, preparing documents, preparing the planning scheme, collecting opinions, appraisal, approval, public disclosure, and implementation. The specific procedure depends on each case.

4. What Is the Difference Between 1/500 and 1/2000 Planning?

Planning presented at a 1/500 scale provides a higher level of detail, while 1/2000 planning generally covers a broader area. However, it should not be understood that every project must go through a 1/2000 planning process before proceeding to 1/500 planning.

5.Does Having 1/500 Planning Mean the Project Has Full Legal Approval?

No. Planning is only one part of the project's overall legal framework. Additional procedures relating to investment, land, construction, environment, and real estate business must be reviewed depending on the specific case.

6. Can Land Lots Be Sold Once 1/500 Planning Is Approved?

This cannot be concluded based solely on 1/500 planning. The conditions for putting the product on the market and other legal requirements applicable to the specific project and product must also be reviewed.

7. Can 1/500 Planning Be Adjusted?

Yes, it may be adjusted in cases permitted by law, provided that the applicable documents, procedures, and competent authority requirements are properly followed.

1/500 planning is an important component in concretizing plans for spatial organization, land use, and infrastructure within an area or project.

For real estate businesses, studying 1/500 detailed planning helps provide a clearer assessment of land development potential, product structure, construction indicators, and project implementation plans.

However, it is particularly important to remember:

1/500 planning does not mean that the project has completed its entire legal process.

When assessing a project, planning, investment, land, construction, and business eligibility should be reviewed together to accurately determine the project's current stage and identify the procedures that remain to be completed.

The legal framework governing urban and rural planning has undergone significant changes from 2025 to 2026. Therefore, when applying these regulations to a specific project, businesses should cross-check the relevant legislation that is in force at the time of implementation.