Engineering and surveying to divide a parcel into legally recorded lots — from preliminary layout through final plat recording with the County Clerk.
A subdivision plat is a recorded legal document. Once filed with the County Clerk, it defines property ownership for decades — every lot boundary, easement, right-of-way, and restriction is permanent public record. There is no such thing as an approximate subdivision plat.
Getting there requires coordinated civil engineering and land surveying: boundary work to establish the existing parcel, design work to lay out the new lots and infrastructure, and a structured approval process through town, county, and state agencies. MLA handles both disciplines under one roof — no hand-offs between firms, no gaps in the record.
The final subdivision plat is filed with the County Clerk and becomes the official record of every lot, easement, and right-of-way. It cannot be loosely drawn or approximately dimensioned — every line and number is a legal statement.
Most municipalities require road plans, drainage design, and utility extensions before approving a subdivision. The lot layout alone is not enough — the infrastructure serving those lots must be engineered, too.
Town Planning Board, Monroe County DOT, NYSDEC, and the Town Engineer all review a subdivision application. SEQR is required by state law. MLA manages every submission, deadline, and response.
Subdivision follows a structured approval pathway required by New York State Town Law. Here's how a parcel becomes legally divided lots — and what's required at each step.
What We Do
Deliverable
Certified boundary plat + topographic base map — the data foundation every subsequent design phase is built on. This step cannot be skipped or approximated.
What We Do
Deliverable
Preliminary subdivision plat submitted to the Planning Board for concept review and feedback — confirms the layout is viable before full infrastructure engineering begins.
What We Do
Deliverable
Full infrastructure drawing set with drainage calculations — what the Planning Board requires before granting final subdivision approval. No infrastructure design means no final approval.
What We Do
Deliverable
All required agency applications submitted and tracked — SEQR determination, SPDES permit, DOT permit, and Health Department approval as applicable. MLA manages every deadline and response.
What We Do
Deliverable
Final subdivision plat recorded with the County Clerk — the permanent public record that defines every new lot, easement, and right-of-way. From this point, the lots exist as legal parcels.
The final plat recording is not the end of the project — it's the end of the approval process. MLA remains available for construction staking and as-built documentation as the new lots are developed.
A complete subdivision engagement produces the following documents — each one required to move through the approval process and ultimately record new legal lots.
Boundary Survey & Base Map
Certified survey plat (PLS-stamped) establishing the existing parcel, with topographic data as the design foundation.
Preliminary Plat Layout
Lot layout drawing for Planning Board review — confirms the subdivision concept before infrastructure engineering begins.
Road Plans, Profiles & Cross-Sections
Full road design drawing set showing geometry, grades, pavement design, and drainage inlets. Required before final approval.
Stormwater Management Plan & Calculations
Engineered drainage design and supporting calculations demonstrating compliance with NYSDEC and municipal requirements.
SEQR Documentation
Full environmental review documentation required by New York State law for most subdivision actions.
Final Subdivision Plat (County Clerk Recording-Ready)
The recorded legal document that creates the new lots — signed and sealed by the PLS, approved by all required parties, filed with the County Clerk.
Webster, NY
12-lot residential subdivision on a 14.3-acre parcel — boundary survey through final plat recording, with full road design, stormwater management, and Monroe County DOT coordination.
Wayne County, NY
4-lot residential subdivision on a rural parcel — boundary survey, preliminary and final plat, septic feasibility coordination with the Health Department.
Ontario County, NY
Commercial subdivision and lot line adjustment for a multi-tenant commercial property — reconfiguring existing lot lines to accommodate a new building pad.
Whether you're subdividing a family parcel or planning a full residential development, we'll tell you what the process requires and what the realistic timeline looks like. Let's talk.