Buying your first units: standard, ADA, and hand-wash stations

The units are the cheapest major thing you will buy, which makes them easy to get wrong in the other direction — over-buying variety you do not have contracts for, or under-buying the ADA units a job requires. Buy to the accounts you can win, not to the fleet you imagine. This chapter covers the three unit types you will start with, what each costs, and the order to buy them.

The three units you start with

The standard unit is the workhorse of every construction site and event. It is what people picture when they hear “porta potty,” and it is the bulk of every fleet. Start here and stay heavy here.

The ADA wheelchair-accessible unit is larger, has a ground-level entry and interior room to maneuver, and is required at many public events and on government or larger construction contracts. The requirement is usually written into the contract or the local code as a ratio of accessible units to standard ones. You buy these to meet specific requirements, not to stock up.

The standalone hand-wash station is a sink unit rented alongside the restrooms — sometimes required (food events, certain job sites), often a paid add-on that raises the value of a booking. Basic gravity-fed models are cheap; heated and multi-basin units cost more.

Luxury restroom trailers are a separate, higher-end segment with their own economics. They are not a starting purchase — add them later once your route is established and you have events that justify the price.

What the units cost

• Standard units: about $900–$1,250 new, with entry-level HDPE units from around $575 (per Total Restroom 2026 and Satellite Industries 2025).
• ADA units: about $2,550–$3,265 new (per Total Restroom 2026) — roughly two to three times a standard unit.
• Hand-wash stations: about $340–$850 basic, or $1,200–$1,700 heated or multi-basin (per PortableHandwashing.com 2025 and Total Restroom 2026).

The takeaway from those numbers: an ADA unit ties up two to three standard units’ worth of capital, so buy them to fill a contract requirement rather than parking them in the yard. One or two to start, then grow your ADA stock as the accounts that require them grow.

How many ADA units do I need?

Enough to meet the accessibility requirements of the jobs you take. Many public events and government or larger construction contracts require a set ratio of ADA-accessible units, and that ratio is written into the contract or the local code, not left to you. Confirm the requirement each job needs before you quote it, and keep enough ADA stock to cover the contracts you are actually chasing. Turning down a job because you are one ADA unit short is a bad reason to lose an account — but so is stocking six ADA units for contracts you do not have.

New or used?

New gives you a clean unit, a known model, and full service life. Used stretches a lean startup budget — and for a business this capital-heavy, that matters — but it means inspecting hard before you rent to a paying customer:

• Tanks for cracks, leaks, and heavy staining that will not clean up.
• Doors, latches, and hinges — a broken latch on a jobsite is a service call and a bad first impression.
• Vents and skids for cracks and structural wear.
• Overall rigidity — HDPE gets brittle with UV exposure over years.

A cracked tank or a failed latch on a jobsite is the kind of small failure that costs you a construction account, so inspect used units hard and price any refurbishment into the deal. A practical middle path is buying standard units used (the wear is cosmetic and cheap to fix) and ADA and hand-wash units new (the reliability matters more and the used market is thinner).

Buy to the route, not to the catalog

The discipline that separates profitable operators from over-leveraged ones is buying units against booked demand. Every unit you buy has to earn its service cost every month — an idle unit in the yard is dead capital that still cost you to buy. Start with a versatile standard lineup, add the ADA and hand-wash units your first contracts require, and let your booked accounts, not a supplier’s catalog, set the pace of buying. The chapters on routes and servicing cadence and scaling routes and adding a second truck go deeper on matching fleet size to route capacity.

When you do buy, track each unit as its own line — what it cost, where it is placed, and what it earns — so you learn which unit types book most and earn most per dollar invested. That per-unit view is what tells you what to buy more of, and it is the same view that lets you never double-book a unit you have already promised to a job.