Before a new building, roadway, utility improvement or land development project can move forward, project teams need a clear understanding of the property and its existing conditions. A land survey provides that critical starting point.
Surveying is much more than locating property lines. A professional land survey can uncover physical, legal and environmental information that may influence a project’s design, permitting requirements, construction schedule and overall feasibility.
Identifying these conditions early gives engineers, architects, developers and property owners the information they need to make informed decisions before significant time and resources are invested.
Property Boundaries and Ownership Limits
One of the primary purposes of a land survey is to establish the legal boundaries of a property.
Surveyors research deeds, subdivision plans, recorded documents and existing monuments before performing field measurements. This information helps confirm where the property begins and ends and whether the physical features on the site align with the recorded property description.
A boundary survey may identify:
- Fences, walls or structures located near property lines
- Potential encroachments from neighboring properties
- Differences between recorded documents and existing site conditions
- Missing, disturbed or incorrectly placed property markers
- Areas where ownership boundaries may require additional investigation
Confirming property limits early helps prevent designs from extending onto neighboring land or violating required setback areas.
Easements and Rights-of-Way
A property may be affected by recorded easements or rights-of-way that limit where construction can occur.
These areas may allow access for utilities, drainage facilities, roadways, shared driveways or neighboring properties. Even though the property owner may own the land, the easement holder may have specific rights to use or access that portion of the property.
A survey can help locate relevant easements and compare them with the property’s existing conditions. This may reveal that a proposed building, parking area, retaining wall or other improvement conflicts with an existing easement.
Recognizing these restrictions during the planning stage allows the project team to adjust the design before it creates permitting, legal or construction complications.
Existing Buildings and Site Improvements
Land surveys document the location of visible improvements throughout a property.
Depending on the type and scope of the survey, these features may include:
- Buildings and structures
- Roads, driveways and parking areas
- Sidewalks, curbs and retaining walls
- Fences and signs
- Stormwater facilities
- Utility poles, hydrants and visible utility structures
- Trees and other significant site features
This information allows engineers and designers to understand how the proposed improvements will interact with the existing property.
It can also reveal features that were constructed differently than shown on older plans or records.
Topography and Drainage Patterns
A topographic survey measures changes in elevation across the site. These measurements are used to create contour lines and identify the overall shape and slope of the land.
Topographic information can reveal:
- High and low areas of the property
- Steep slopes
- Existing drainage paths
- Depressions where water may collect
- Retaining walls, embankments and drainage features
- Elevation differences between the property and surrounding roads or properties
Engineers use this information when designing grading, stormwater management systems, roadways, utilities and building elevations.
Without reliable topographic data, a design may fail to account for how water currently moves across the property or how proposed construction could affect neighboring areas.
Visible Utilities and Infrastructure
A survey can locate visible evidence of utilities and infrastructure, including manholes, catch basins, valves, hydrants, utility poles and above-ground equipment.
Surveyors may also incorporate information from available utility plans or markings provided by utility location services. However, determining the precise location of underground utilities may require additional records research, utility coordination or subsurface investigation.
Understanding the location of utilities early can help identify potential conflicts with proposed foundations, roadways, drainage systems and other improvements.
It may also reveal where utility relocations, protection measures or new service connections will be required.
Access and Roadway Conditions
Access is an important consideration for nearly every development or construction project.
A land survey can document the location and dimensions of existing roads, driveways, curb openings and access points. It may also identify public rights-of-way, road centerlines and features near the property frontage.
This information can help determine whether a proposed entrance has adequate space, visibility and connection to the surrounding roadway network.
Survey data is often used by traffic and civil engineers when evaluating driveway locations, roadway improvements, pedestrian access and compliance with municipal or transportation agency requirements.
Potential Setback and Zoning Conflicts
While surveyors do not typically make zoning determinations unless included within their scope of work, survey information provides the measurements needed to evaluate zoning compliance.
Once property lines, buildings and other improvements are located, the project team can compare those conditions with applicable requirements for:
- Front, side and rear yard setbacks
- Building coverage
- Parking areas
- Buffers and landscape areas
- Building height reference points
- Distance between structures
A survey may reveal that an existing structure is already close to a required setback or that the usable development area is smaller than initially expected.
These findings can significantly affect the proposed layout of a project.
Floodplains, Wetlands and Other Environmental Features
Certain surveys may include or be coordinated with environmental mapping, floodplain information or wetland investigations.
While a standard boundary or topographic survey does not automatically determine environmental jurisdiction, surveyors can accurately locate visible streams, drainage channels, wetland flags and other environmental features identified by qualified professionals.
This information can then be incorporated into engineering plans and permitting documents.
Environmental constraints may reduce the area available for development and may require buffers, special permits or additional design considerations.
Differences Between Records and Actual Site Conditions
Older deeds, plans and municipal records do not always match what currently exists on a property.
Buildings may have been expanded, utilities may have been relocated and site improvements may have been constructed without being reflected on the latest available plan.
A new survey provides a current representation of the property based on field measurements and available records.
Identifying these discrepancies before design begins helps the project team avoid relying on outdated or incomplete information.
Why Surveying Should Happen Early
Surveying is often one of the first professional services completed during a project because nearly every later phase relies on accurate site information.
Engineers use survey data to prepare grading plans, utility designs, stormwater calculations and construction drawings. Architects use it to position buildings and evaluate site access. Developers and property owners use it to better understand a property’s opportunities and limitations.
Starting a project without an accurate survey can result in:
- Design changes
- Delayed approvals
- Utility conflicts
- Boundary disputes
- Construction errors
- Unexpected costs
Completing the appropriate survey early allows potential issues to be addressed while the project is still flexible and changes are easier to make.
Selecting the Right Type of Land Survey
The type of survey required will depend on the property, project scope and intended use of the information.
Common surveying services may include:
- Boundary surveys
- Topographic surveys
- Existing conditions surveys
- ALTA/NSPS Land Title Surveys
- Subdivision surveys
- Construction stakeout
- As-built surveys
- Utility and infrastructure surveys
A professional surveyor can review the project goals and recommend the appropriate scope of work.
Building a Stronger Foundation for the Project
A land survey gives project teams more than measurements. It provides a reliable picture of the property before design and construction begin.
By identifying boundaries, easements, elevations, existing improvements and other site conditions early, surveying helps reduce uncertainty and supports better planning throughout the project.
Carroll Engineering Corporation provides professional land surveying, civil engineering and planning services for residential, commercial, municipal and infrastructure projects throughout Pennsylvania and New Jersey.
Our surveying and engineering professionals work together to help clients understand their properties, identify potential challenges and move projects forward with accurate information from the start.
Get in touch today: info@carrollengineering.com / 215-343-5700