Here are some situations when you need a surveyor:

1. Land purchase:
   If you're considering buying a piece of land, you should hire a surveyor to determine its boundaries and verify that the property lines match the legal description in the deed. A survey will also identify any encroachments, easements, or other issues that could affect the property's value.

2. Property development:
   Before starting any construction project, you should have a surveyor evaluate the site. They can determine the topography, soil type, and other factors that could affect the project's feasibility. A surveyor can also create a site plan that shows the location of existing structures, utilities, and other features that could affect the construction process.

3. Boundary disputes:
   If you're involved in a dispute over property boundaries, a surveyor can provide an objective assessment of the situation. They can identify the true boundary lines and provide evidence to support their findings. A surveyor's report can be used in court to resolve the dispute.

4. Flood zones:
   If you live in an area prone to flooding, you may need a surveyor to determine if your property is in a flood zone. A surveyor can evaluate the topography and hydrology of the area and provide a flood risk assessment. This information can be used to determine if you need flood insurance or if you should take other steps to protect your property.

5. Infrastructure projects:
   Surveyors are essential in infrastructure projects, such as road construction or utility installations. They can provide accurate measurements and create detailed maps that help engineers and construction crews plan and execute the project.

6. Property sales:
   If you're selling a property, a surveyor can provide a detailed report that shows the location of all structures and features on the property. This information can help potential buyers understand the property's boundaries and assess its value.

Why Do You Need a Surveyor?

1. Accuracy:
   Surveyors use specialized equipment to measure distances and angles accurately. They also use technology such as GPS and laser scanning to create precise 3D maps of the area. This level of accuracy is crucial in many industries, including construction and real estate.

2. Legal Requirements:
   In many cases, a survey is required by law before a property can be sold or developed. For example, some local authorities require a survey before issuing a building permit. A surveyor can ensure that you meet all the legal requirements and avoid costly fines or legal disputes.

3. Planning and Design:
   A survey provides critical information for planning and designing new projects. The data collected by the surveyor helps architects, engineers, and construction crews plan the project and ensure that it is executed correctly.

4. Boundary Disputes:
   A surveyor's report can be used in court to resolve boundary disputes. A surveyor can provide an objective assessment of the situation, identify the true boundary lines, and provide evidence to support their findings.