What is the difference between a unit number and an apartment number?

Last Updated: March 27, 2025

The difference between a unit number and an apartment number mainly depends on how they are used:

• Apartment Number – Specifically refers to a residential unit within an apartment building. Example: Apt 4B, 123 Main St.

• Unit Number – A broader term used for both residential and commercial properties, including apartments, condominiums, townhouses, and office spaces. Example: Unit 205, 123 Main St.

Key Differences:

1. Usage:

• “Apartment number” is used exclusively for rental apartments.

• “Unit number” can refer to condos, townhomes, office spaces, or apartments.

2. Ownership:

• Apartments are typically rented.

• Units may be rented or owned (e.g., a condo unit).

3. Address Formatting:

• Apartment: 123 Main St., Apt 4B

• Unit: 123 Main St., Unit 205

In general, all apartments have unit numbers, but not all unit numbers are apartments—they could be condos, offices, or other types of spaces.