Six-month rental vs buying a unit and paying for service only: what do the numbers depend on?

The decision between a six-month rental and buying a unit with service contracts hinges on the length of use, the total cost of ownership, and your willingness to manage maintenance. For your crew of eight, OSHA 1926.51 requires only one toilet, so a single standard unit is the minimum. A long-term rental bundles the unit cost, delivery, weekly service, and repairs into one predictable monthly payment. Buying a unit means you pay the purchase price upfront plus a per-service fee for pumping, which is typically lower than the rental's service component. The rental company handles any repairs or vandalism at no extra charge, while ownership puts those risks on you.

Over six months, the rental's convenience often outweighs the ownership savings because the time frame is too short to amortize the purchase. If you planned to use the unit for a year or more, buying becomes more attractive as the upfront cost spreads over more months. The gravel ground and easy truck access simplify placement for either option. Factor in that a standard unit is simpler and cheaper to service than a deluxe or ADA-compliant model, which would increase both rental and service costs. The key variables are the rental rate versus the sum of purchase price, service fees, and potential repair costs over your project's duration.