Mastering the Lot and Block Survey System for the Maine Real Estate Exam

Last updated: April 2026

For candidates preparing for the Maine real estate licensing exam, mastering the various methods of land description is non-negotiable. While Maine is historically recognized as a "metes and bounds" state, the modern real estate landscape relies heavily on the lot and block survey system—especially for residential subdivisions. Understanding how this system works, how it interacts with Maine's specific subdivision laws, and how to read a recorded plat is essential for both passing your exam and practicing successfully as a licensee.

In this article, we will break down the lot and block system, explore its application within Maine's legal framework, and provide practical examples to help you ace your test. For a broader overview of the testing requirements and structure, be sure to check out our Complete Maine Exam Guide.

What is the Lot and Block Survey System?

The lot and block survey system, frequently referred to as the recorded plat system, is a method used to describe and identify specific parcels of land, particularly in densely populated metropolitan areas and suburban subdivisions.

Here is how the system is generated:

1. Initial Survey: A large tract of land is first surveyed and described using a different method—in Maine, this is almost exclusively the metes and bounds system.
2. Subdivision: A licensed surveyor or engineer divides the large tract into smaller, manageable parcels. These are grouped into "blocks" (often separated by streets) and further divided into individual "lots."
3. Plat Map Creation: The surveyor creates a detailed map known as a plat map, which shows the boundaries, measurements, street names, and lot numbers of the new subdivision.
4. Recording: The approved plat map is recorded at the local County Registry of Deeds. Once recorded, the lot and block numbers become the legal description of the property.

How Lot and Block Operates in Maine

Real estate laws and surveying practices vary significantly by state. To pass the Maine real estate exam, you must understand how the lot and block system fits into Maine's specific historical and legal context.

The Historical Context: Metes and Bounds vs. Lot and Block

Because Maine was part of the original 13 colonies (originally a district of Massachusetts), it never adopted the federal Rectangular Survey System (Government Survey System) used in western states. Therefore, all land in Maine originates from a metes and bounds description. However, as towns like Portland, Bangor, and Lewiston grew, developers needed a simpler way to convey smaller parcels. Thus, the lot and block system was layered on top of the original metes and bounds descriptions to streamline the transfer of subdivision homes.

Maine Subdivision Law (Title 30-A, M.R.S.A. § 4401)

A highly testable topic on the Maine exam is the state's definition of a subdivision. Under Maine law (Title 30-A, M.R.S.A. § 4401), a subdivision is generally defined as the division of a tract or parcel of land into 3 or more lots within any 5-year period.

When a property owner hits this threshold, they trigger municipal subdivision review. Once the municipality approves the subdivision, the resulting plat map must be filed at the Registry of Deeds before any lots can be legally sold using the lot and block description. Selling a lot in an unapproved subdivision is a violation of Maine law and can result in severe penalties for both the developer and the representing real estate licensee.

Reading a Lot and Block Legal Description

As a Maine real estate agent, you will frequently encounter lot and block descriptions in property deeds, title reports, and the Multiple Listing Service (MLS). A proper lot and block description is concise and relies entirely on the public record.

Practical Example:
"Lot 14, Block B, of the Whispering Pines Subdivision, as per plat thereof recorded in the Cumberland County Registry of Deeds, Book 245, Page 88."

Let’s break down this formula:

• Lot 14: The specific parcel of land the buyer is purchasing.
• Block B: The larger grouping of lots within the subdivision.
• Whispering Pines Subdivision: The official name of the recorded plat.
• Cumberland County Registry of Deeds: The specific Maine county office where the map is stored.
• Book 245, Page 88: The exact location in the public records where anyone can find the visual map detailing the lot's dimensions and easements.

The Role of the County Registry of Deeds in Maine

For a lot and block description to be legally valid in Maine, the plat map must be recorded in the county where the property is located. Maine has 16 counties, but a fun piece of trivia that demonstrates genuine local expertise is that Maine actually has 17 Registries of Deeds. Aroostook County is so large that it is split into a Northern Registry (in Fort Kent) and a Southern Registry (in Houlton).

When you are researching a property for a client, you will use the Book and Page number from the lot and block description to pull the plat map from the respective county registry. This map will reveal crucial details like lot dimensions, utility easements, and setback lines. If you are struggling to understand how to read these public records, utilizing top-tier study aids can help. Review our Maine Best Study Materials and Resources for recommendations on prep courses that offer visual plat map exercises.

Prevalence of Land Descriptions in Maine

To give you an idea of what you will encounter in your day-to-day practice as a Maine licensee, here is a breakdown of the primary legal description methods currently used in Maine real estate transactions.