Market rent.
You develop an opinion of market rent regardless of what the actual rent is, just like you develop an opinion of market rent regardless of what the contract price is.
“But Tom, in a truly arms length transaction, the contract price is at least influential in your final reconciliation.” True, and the same with actual rent. If I find that the market rent is generally close to the actual rent, I usually say that the actual rent is the same as the actual rent.
However, there are a couple of caveats
. 1. With units tied to a lease, the rent was determined at the signing, which many times could be almost a year old….could be a lot of changes in that year. Rents could have gone up or down in that time. Your opinion of market rent is based upon the effective date of the appraisal, not at the signing of the lease.
2. With tenant at will, the “textbook theory” is that the rent is always changing according to the market. You find that, right? Neither do I! Landlords find that there no such thing as a “ok” tenant. They are either a tenant from Hell or a fantastic tenant. If you have the latter, you will do anything you can to keep that tenant, even leaving a below market rent alone. That is why I find that tenant at will is generally below market rent.