Real estate development moves fast, but projects can stall instantly if you miss the exact meaning of a legal or planning term.

To help you speak the language of the industry with confidence, we are launching our Rapid-Fire Definition Video Series—a collection of bite-sized, 2-minute breakdowns of the essential terms every developer, investor, and professional needs to know.

Our first release, Module 1: The Foundation of Land Potential, decodes the critical legal and physical terms that define a development site. Watch the quick-hit videos below, or use this post as your quick-reference glossary!

1. The PIN (Property Identification Number)

Every project starts with a unique land identifier, but the type of PIN changes how the property is structured.

  • Horizontal PIN: Defines a single parcel of land across a flat plane (typical for raw, undeveloped land).

  • Vertical PIN: Used in condominiums, dividing the air space vertically so each individual unit or parking space gets its own unique number.

Why it matters: The PIN type determines how you will eventually finance the project and legally sell off parts of the asset.

2. Highest and Best Use (HBU)

The underlying concept that dictates what actually gets built on a piece of land. To find a site’s HBU, a development concept must pass four specific tests:

1. Legally permissible under current or realistic zoning rules

2. Physically possible given the site’s size, shape, and soil

3. Financially feasible to construct

4. Maximally productive (generating the absolute highest return)

3. GFA vs. GLA (Measuring the Space)

When analyzing a building’s size, developers use two entirely different metrics depending on whether they are looking at costs or returns.

  • GFA (Gross Floor Area): The total area measured to the outside walls, including common hallways and mechanical rooms. GFA drives your construction costs.

  • GLA (Gross Leasable Area): The specific, usable portion of the building you can actually rent out to tenants. GLA drives your revenue.

4. Density & Zoning: FAR & As-of-Right

Municipalities control how large a building can be using strict zoning definitions.

  • FAR (Floor Area Ratio): A metric calculated by dividing the total buildable floor area by the actual square footage of the land parcel.

  • As-of-Right Development: A project that fits perfectly within existing FAR and zoning bylaws. Because it complies with all current rules, it bypasses major municipal approvals and can head straight to building permits.

5. OPA, ZBA, and Entitlements (The Approval Path)

When a project vision exceeds what the current local laws allow, you enter the planning approval phase.

  • OPA (Official Plan Amendment) & ZBA (Zoning Bylaw Amendment): Legal applications submitted to the city to change the official land use rules for your specific site.

  • Entitlements: The official planning permissions granted by the municipality. Securing these creates a Land Lift—a significant increase in the raw land’s value before construction even begins.

6. SPA (Site Plan Approval)

The final milestone of the planning process. Site Plan Approval (SPA) is the city’s detailed sign-off on your exact building design, site layout, landscaping, and connection to local utilities. Achieving SPA is the green light required to finally apply for building permits.

Watch The Foundation of Land Potential: Terms & Definitions Now!

Ready to master these definitions in minutes? Check out the rapid-fire video playlist below to get the full visual breakdown of each term.

Book a time with Dave Price to discuss how we can help your pro forma pencil out.