Parking Ratio
The number of parking spaces provided per 1,000 square feet of building area, used to gauge whether a property has enough parking for its tenant mix.
Definition
Parking ratio expresses how many parking spaces a property offers relative to its size, typically stated as spaces per 1,000 SF. Big-box industrial and distribution buildings need very little parking, often under 1 space per 1,000 SF, since they employ relatively few people per square foot and trucks use a separate yard. Small bay and flex properties need more, generally 2 to 4 spaces per 1,000 SF, because multi-tenant buildings pack more businesses, employees, and customer or vendor visits into the same footprint. Municipalities set minimum parking ratios by zoning code, and a property that falls below the required ratio can run into problems getting a certificate of occupancy for a new tenant or an expanding one. Insufficient parking also creates day-to-day friction: employees and customers park on the street or block other tenants' spaces, which becomes a recurring management issue in multi-tenant buildings.
Example
A 40,000 SF multi-tenant flex building has 120 parking spaces, a ratio of 3.0 per 1,000 SF. A prospective tenant wants to add a customer-facing showroom that would push parking demand above what the ratio supports, so the landlord checks the local zoning minimum before approving the use.
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