Land & Parcel Glossary
Plain-English definitions of the terms every land buyer should know — from landlocked parcels and perc tests to easements, zoning, and mineral rights. Each entry explains what the term means, why it matters when buying land, and how to check it on a real parcel.
Land Owl is a parcel intelligence platform for land investors, developers, and researchers — 160M+ U.S. parcels with county-verified ownership, zoning, and infrastructure data on one map.
Ownership & Legal Rights
Adverse Possession Adverse possession is a legal doctrine that lets someone gain ownership of land they do not hold title to by openly occupying and using it, without the owner's permission, continuously for a period set by state law. If the statutory requirements are met for the full period, the occupier can ask a court to make them the legal owner. Deed Restriction A deed restriction is a private limitation on how a property can be used, written into a deed or recorded against the title, that binds the current owner and everyone who owns the land after them. Common examples prohibit mobile homes, commercial uses, further subdivision, or structures below a minimum size. Easement An easement is a legal right to use part of someone else's land for a specific purpose — most commonly access, utilities, or drainage — without owning it. Most easements “run with the land,” meaning they stay in force when either property changes hands. Eminent Domain Eminent domain is the government's power to take private property for public use, provided the owner is paid just compensation — a requirement set by the Fifth Amendment. The legal proceeding used to exercise it is called condemnation, and the power can extend to certain authorized entities such as utilities and pipelines. Landlocked Parcel A landlocked parcel is a piece of land with no direct legal access to a public road — it is surrounded entirely by other privately owned property. Reaching it means crossing a neighbor's land, which is only lawful with a recorded easement or other legal access right. Legal Access Legal access is a legally enforceable right to reach a parcel from a public road — either because the parcel fronts the road directly or because a recorded easement crosses intervening land. It is distinct from physical access: a usable driveway means nothing legally if no recorded right backs it up. Mineral Rights Mineral rights are the ownership rights to the resources beneath a parcel's surface — oil, gas, coal, and other minerals. In the U.S. they can be “severed” and sold or leased separately from the surface, so owning the land does not always mean owning what lies under it. Right-of-Way A right-of-way is a legal right to pass over land owned by someone else, most commonly the strip of land used for a road, trail, railroad, or utility corridor. It can exist as an easement across private land or as a strip the government or a railroad owns outright. Riparian Rights Riparian rights are the water-use rights that come with owning land that touches a river, stream, or lake — typically the right to make reasonable use of the water, access it, and build features like docks subject to regulation. They attach automatically to waterfront land in states that follow the riparian doctrine, which covers most of the eastern United States.
Zoning & Land Use
Buildable Lot A buildable lot is a parcel of land that can legally and practically support construction — it meets zoning requirements for the intended use, has legal access, can be served by water and sewer or well and septic, and has enough physically suitable ground after setbacks, easements, floodplains, and wetlands are accounted for. “Buildable” is not an official designation; it is a conclusion you reach after checking all of those constraints. CC&Rs (Covenants, Conditions & Restrictions) CC&Rs — covenants, conditions, and restrictions — are private rules recorded against a property that govern how it can be used, typically created by a developer for a subdivision and often enforced by a homeowners association. They bind every future owner of the land, layering private restrictions on top of public zoning. Entitlement Entitlement is the legal process of obtaining government approvals to develop a piece of land for a specific use — rezonings, site plan approvals, subdivision approvals, variances, and permits. Land that has completed this process is called “entitled,” meaning the right to build the proposed project has been secured even though construction has not started. Land Use Code A land use code is a classification assigned to a parcel — most commonly by the county assessor — describing how the land is currently used, such as single-family residential, agricultural, commercial, or vacant. It describes present use for assessment purposes and is distinct from zoning, which governs what uses are legally allowed. Setback A setback is the minimum distance a building or structure must be kept from a property line, road right-of-way, or other feature, as required by local zoning ordinances. Front, side, and rear setbacks together define the buildable envelope of a lot. Subdivision A subdivision is the legal division of one parcel of land into two or more lots, carried out under local subdivision regulations and usually finalized by recording a plat. The word also refers to the resulting development — a named community of platted lots. Zoning Zoning is the system of local rules that divides land into districts and controls what each parcel can be used for — residential, agricultural, commercial, or industrial — along with standards like minimum lot size, setbacks, and building height. Zoning is set at the county or municipal level, so the rules for two similar parcels can differ dramatically.
Environment & Site Conditions
Conservation Easement A conservation easement is a recorded legal agreement that permanently restricts development and certain uses of a property in order to protect its conservation values — such as wildlife habitat, farmland, forest, or open space — while the owner keeps title to the land. It is held and enforced by a land trust or government agency and binds all future owners. FEMA Flood Zone FEMA flood zones are risk classifications mapped by the Federal Emergency Management Agency showing how likely an area is to flood, published on Flood Insurance Rate Maps (FIRMs). High-risk zones (those starting with A or V) have at least a 1% annual chance of flooding, while Zone X covers moderate- and minimal-risk areas. Floodplain A floodplain is the low-lying land adjacent to a river, stream, lake, or coastline that floods when water levels rise. In land buying, “the floodplain” usually means the regulatory floodplain — the area FEMA maps as having at least a 1% annual chance of flooding, where development is restricted and flood insurance is often required. Perc Test A perc test (percolation test) measures how quickly water drains through the soil on a site, which determines whether the land can support a septic system. On land without sewer service, a passing perc test is usually required before the county will issue a septic permit — and without one, the parcel may be unbuildable. Septic System (Rural Land) A septic system is an on-site wastewater treatment setup — typically a buried tank plus a drainfield — used where municipal sewer service is not available, which covers most rural land. Whether a parcel's soil can support one is a make-or-break question for building a home on unsewered land. Soil Survey A soil survey is a mapped inventory of the soil types in an area, classifying soils by texture, depth, drainage, and slope and rating their suitability for uses like building foundations, septic systems, and agriculture. In the U.S., the national soil survey is maintained by the USDA's Natural Resources Conservation Service (NRCS) and is free to the public. Wetlands Delineation A wetlands delineation is a field study that identifies and maps the boundaries of wetlands on a property, based on the three federal indicators: hydric soils, wetland vegetation, and wetland hydrology. It is performed by qualified environmental consultants following the U.S. Army Corps of Engineers delineation manual and its regional supplements.
Maps, Measurement & Records
Acreage Acreage is the size of a piece of land measured in acres, where one acre equals 43,560 square feet — roughly three-quarters of an American football field. It is the standard unit for describing, pricing, and comparing rural and undeveloped land in the United States. Cadastral Map A cadastral map is an official map showing the boundaries, dimensions, and identifying numbers of land parcels within a jurisdiction, maintained primarily for property taxation and land administration. County assessor parcel maps — and the digital GIS parcel layers built from them — are the cadastral maps most land buyers encounter. GIS Parcel Data GIS parcel data is the digital map of property boundaries maintained in a geographic information system, with each parcel linked to attributes like owner name, parcel number (APN), acreage, assessed value, and land use. It is compiled primarily from county assessor and recorder records and powers most online parcel maps. Lot Line Adjustment A lot line adjustment is a legal procedure that moves the boundary between adjoining parcels without creating any new parcels — land is shifted from one lot to its neighbor and new deeds are recorded. Because no new lots result, it typically goes through a streamlined county or city review rather than the full subdivision process. Metes and Bounds Metes and bounds is a method of legally describing land by tracing its perimeter — starting at a defined point of beginning, then following a sequence of compass bearings and distances (the “metes”) and physical or neighboring boundaries (the “bounds”) back to the start. It is the dominant description method for rural and irregular parcels, especially in the eastern United States. Parcel Number (APN) An APN — Assessor's Parcel Number, also called a parcel ID or tax parcel number — is the unique identifier a county assessor assigns to each parcel of land for taxation and record-keeping. It works like a fingerprint for the property: formats vary by county, but every assessed parcel has exactly one. Plat Map A plat map is a recorded drawing that shows how a tract of land is divided into lots, including lot lines, dimensions, lot numbers, streets, easements, and dedicated areas. Once approved by the local government and recorded with the county, the plat becomes part of the official land records and lots can be legally described by reference to it.
Buying & Transactions
Assemblage Assemblage is the process of combining two or more adjacent parcels of land into a single larger holding, usually so the combined site can support a use that none of the individual parcels could. The value gain created when the whole is worth more than the sum of the parts is called plottage. Due Diligence (Land) Due diligence is the investigation a buyer performs before closing on land to verify that the property is what it appears to be — confirming title, access, zoning, boundaries, soils, flood and wetland status, utilities, and anything else that affects whether the land can be used as intended. It typically happens during a contractual due diligence period, during which the buyer can walk away if the findings are bad. Improved vs. Unimproved Land Improved land has been altered to make it usable or buildable — typically with utilities, road access, grading, or structures — while unimproved (raw) land remains in its natural state with no such additions. The distinction drives price, financing terms, carrying costs, and how much work stands between purchase and use. Off-Market Land Off-market land is property that is not publicly listed for sale — there is no MLS listing, sign, or advertisement, and any deal happens through direct contact with the owner. Buyers find it by researching ownership records and reaching out to owners who may be willing to sell, rather than by browsing listings. Timberland Timberland is land whose primary value comes from growing and harvesting trees, whether managed commercially or held as forested acreage with merchantable timber. Its price reflects two components: the underlying land and the standing timber, which can be worth as much as the dirt itself. Title Search A title search is an examination of the public land records to confirm who legally owns a property and to uncover anything recorded against it — liens, easements, deed restrictions, unpaid taxes, and other encumbrances. It is the foundation of a title insurance commitment and a standard step before closing any land purchase.
All terms A–Z
Z
Ready to find your perfect parcel?
Join thousands of investors using Land Owl to discover and analyze land opportunities.