Subdivision Plat vs Lot Split

A subdivision plat is a formal process that creates multiple lots with new infrastructure (streets, utilities, drainage) through public hearings, engineering design, construction, and recording with the county. It is governed by Florida Statutes Chapter 177. A lot split (also called a minor subdivision or administrative split) divides one parcel into up to 8 residential lots without adding infrastructure, through a simpler administrative approval. Florida HB 1143 mandates that local governments allow lot splits of up to 8 lots with expedited administrative review.

Under Florida HB 1143, you can split a parent parcel into up to 8 residential lots through an administrative lot split process. Some counties set lower thresholds — for example, some allow only 2-4 lots through administrative splits. The split must comply with existing zoning (minimum lot size, setbacks, frontage) and cannot include new public streets or utility infrastructure. If you need more than 8 lots or require new infrastructure, a full subdivision plat is required.

A lot split costs $3,000-$15,000 total — including survey ($1,500-$5,000), application fees ($350-$2,500), and legal review ($500-$2,000). A full subdivision plat costs $15,000-$100,000+ — including boundary and topographic surveys, engineering plans (drainage, utilities, roads), application/impact fees ($500-$7,600+), infrastructure construction, and inspections. Costs vary significantly by county — Coral Gables charges $7,612 + $761/lot for a plat review, while Crestview charges $350 + $15/lot.

A lot split typically takes 30-90 days from application to recording — faster if the lot complies with zoning and no variances are needed. The surveyor prepares the lot split survey in 1-3 weeks, the county reviews the application in 2-6 weeks, and recording takes 1-2 weeks. A full subdivision plat takes 6-18 months due to the engineering design, public hearing process, infrastructure construction, and inspection phases.

Yes. A Florida-licensed Professional Surveyor and Mapper (PSM) must prepare the survey showing the proposed lot lines, dimensions, and area. Some counties accept a survey sketch for simple lot splits, while others require a full boundary survey. The surveyor also provides legal descriptions for the new lots that will be recorded in the county records. Without a licensed surveyor, the county will not approve the split.

It depends on the county. Some Florida jurisdictions (e.g., Lake County) specifically exclude properties in platted subdivisions from the administrative lot split process. In these cases, you would need a replat — a formal process to amend the existing subdivision plat. Other counties allow splits within platted subdivisions if the resulting lots meet zoning requirements. Check your county's land development code or consult a local surveyor before proceeding.

A replat changes the lot lines within an already-recorded subdivision plat. You need a replat when you want to combine lots, adjust lot lines, or split a lot within a platted subdivision. The process is similar to a new plat — engineering review, public hearing (depending on county), and recording — but typically faster and cheaper because infrastructure already exists. Replats are governed by FL Statutes Ch. 177 and local land development codes.

Yes, this is one of the most common reasons for a lot split. After the split is approved and recorded, each resulting lot receives its own legal description and parcel number. You can then sell any lot independently. The split must comply with zoning (minimum lot size, setbacks, road frontage), and any existing structures must meet setback requirements on the reduced lot. A surveyor can evaluate your property before you apply to confirm the split is feasible.