4.4 Subdivision, As-Built, and Consultation Surveys

Creating new parcels

NCEES lists surveys to establish new parcels, lots, or units, including types of subdivisions, platting, condominiums and associations, deed restrictions and restrictive covenants, and zoning and subdivision ordinances. Creating land is a simultaneous conveyance event, so the geometry the surveyor sets becomes the senior record for the new lots.

Subdivision platting

A subdivision plat divides a parent tract into lots, blocks, streets, easements, and dedications. The surveyor must:

1. Establish and verify the parent boundary from evidence and title.
2. Design lots that meet zoning minimums, frontage, and setback rules.
3. Show streets, rights-of-way, drainage, and easements with dedications.
4. Set and describe monuments as the platting ordinance requires.
5. Satisfy recording requirements so the plat is enforceable.

Because lots are created simultaneously, no lot is senior; later retracement prorates any difference among lots between found original monuments.

Condominiums and unit developments

A condominium divides ownership into units plus common elements. Unit boundaries are often defined by building features and may be three-dimensional (floors, ceilings, walls), governed by the state condominium statute and the declaration. This differs from a flat lot-and-block subdivision because the description includes vertical limits and shared common areas.

Restrictions and covenants

Deed restrictions and restrictive covenants are private limits recorded in the chain of title that run with the land. They can be stricter than zoning. A surveyor preparing or interpreting a plat must account for recorded covenants, building lines, and association controls, not just the public zoning ordinance.

As-built and record drawings

An as-built or record-drawing survey documents what was actually constructed. NCEES lists as-built calculations including slopes and grades, techniques, and horizontal and vertical positions relative to a plan or datum. The deliverable shows measured final positions, elevations, inverts, and slopes, plus deviations from plan where relevant, tied to the project control and datum. It must not simply reprint the design plan. The professional value is an accurate record of reality for operations, maintenance, regulatory compliance, and future design.

Consultation services

Consultation surveys advise on development feasibility before full design or acquisition. NCEES lists site topography and slope, site access, zoning standards for new projects, and floodplains as related to land development. A consultation identifies constraints early so a client can decide whether and how to proceed:

• Topography and slope that affect grading cost and drainage.
• Legal and physical access, frontage, and easement needs.
• Zoning, density, setbacks, and use limits.
• Floodplain and regulatory exposure.

The consultation deliverable is advice and constraint mapping, not a final boundary or construction product, and the surveyor should state assumptions and the limits of the analysis.

Types of subdivisions

NCEES lists types of subdivisions, so distinguish them. A minor subdivision (a few lots, often no new public road) typically follows a streamlined approval; a major subdivision creating streets and infrastructure follows full preliminary-plat and final-plat review. A lot-line adjustment moves a boundary between existing parcels without creating a new lot and follows a different, lighter process. Replatting revises an existing recorded plat. The surveyor must apply the correct local procedure, because recording a plat under the wrong process can be void or unenforceable.

Platting geometry and monumentation

A defensible subdivision plat closes mathematically, ties to the parent boundary and to recoverable monuments, and labels every curve, bearing, distance, easement, and dedication. The platting ordinance specifies monument types and where they must be set: typically block corners, lot corners, points of curvature, and street intersections. The plat must also show the basis of bearings, the controlling parent-tract evidence, and certificates for the surveyor, owner, and approving authorities. Missing or ambiguous monumentation is a common reason a plat is rejected or causes later retracement disputes.

Dedications and easements on plats

A dedication transfers an interest (often a street or park) to the public or a jurisdiction; the plat language and acceptance govern whether the dedication is effective. Easements shown on a plat (utility, drainage, access) burden the lots they cross and must be described precisely. The surveyor distinguishes a dedication (ownership or public interest) from an easement (a use right), because they have different legal effects and different effects on the buildable area of a lot.

As-built calculations and tolerances

An as-built is more than a redraw: it reports measured inverts, rim elevations, pipe slopes, structure locations, and clearances, then compares them to design tolerance. A storm pipe designed at 1.00 percent but built at 0.40 percent may not drain; the as-built must catch and report that deviation. As-built positions tie to the same control and datum as the design so the comparison is valid, and the surveyor labels the survey date and the limits of what was accessible to measure.

Zoning and subdivision ordinances

NCEES lists zoning and subdivision ordinances under new-parcel surveys. Zoning governs use, density, lot area and width minimums, height, and setbacks; the subdivision ordinance governs the platting process, street and block standards, monumentation, drainage, and dedication requirements.

A lot that meets zoning area but fails the subdivision ordinance's frontage or access rule cannot be approved. The surveyor confirms the parcel satisfies both before designing the plat, and notes any required variances. Condominium and association developments add the governing condominium statute and the recorded declaration, which define units, common elements, and the association's authority over shared areas.