Joyce,
Respectfully, The appraiser is telling us in that market area that the income from an income producing properties lease is considered by purchasers and has everything to do with the market value.
This property is encumbered by lease for 10 years. Which may or may not be a significant amount of time in that submarket.
Also, what the appraiser is telling us is that he is concerned the below market lease rate will effect the market value due to the rate and the encumbrance.
The fee simple estate has been divided and the theoretical perspective owner of the property is purchasing is an encumbered fee simple property. Encumbered by the respective lease. They are purchsing a leased fee interest for a period of time and the right to do what they wish with the property at the expiration of the lease. The tenant conversely has purchased a leasehold interest for a period of years from the bundle of fee simple rights and the owner.
I say theoretical sale because the definition of market value typically used assumes the property is transferred as of a specified date.
Because the seller has granted some of their rights to occupy the property for a period of years, the fee simple estate has been encumbered. The market value will depend on the typical purchaser's reaction to the encumbrance. This is of course, unless the appraiser disregards the encumbrance, which is not typical in long term leased property and would obviously be a hypothetical condition.
The market value is derived from the leased fee interest, since that is what would be purchased in this appraisal's theoretical sale, and the residual. Another method is to develop a cap rate for properties leased at below market rates then utilize the below market rent and the actual rental rate (below market) to develop a value of the below market income stream.
This relationship is explained in the AI course advanced income capitalization on section 1.19. As well as earlier more basic income property courses.
See this article about cap rates derived from below market rents and their influence on value conclusions:
http://nreionline.com/commentary/taxnotes/real_estate_improper_cap_rates_0411/
Russell Kitzberger
Pointer Appraisal Services LLC
www.PointerAppraisal.com