Once you choose a dealer to work with and pick out a portable office, you'll sign a fairly standard lease agreement that outlines all the relevant terms. You will have to show proof of insurance, both liability and property, before signing a contract. Established businesses will usually have to pay the first month's rent and all setup fees, while individuals or new businesses may be asked to pay a damage deposit and/or the last month's rent, as well.

Delivery usually takes 5 to 10 days. If you need your trailer sooner, you may be able to pay extra to get a rush shipment, but in some cases the dealer's schedule just won't allow it.

Once it's delivered, installation of a portable office is fairly simple. No real site prep needs to be done in advance - an appropriately-sized patch of semi-level land is all it takes. The delivery crew will use cinder blocks to stabilize and level the trailer. They'll also install appropriate ground anchors depending on the soil conditions.

If you've rented steps and skirting for the portable office - both of which are strongly recommended - they'll install those as well. However you'll need to supply an electrician and plumber to connect utilities. Both are less than an hour's work for a professional if you have power and water supplies nearby.