Commercial Real Estate On Merritt Island % Increases In General Value Over Last 3 Years?

Wish that I had an easier answer for you, but I will give you a link to check out a little more information..
Pricing commercial real estate in a sub-market can be very involved. Essentially, prices will be determined by NOI (net operating income) and Cash-on-Cash returns ((NOI-debt service) divided by cash into the deal(aka down deposit)). These calculations are then given a multiple based upon the local market.
Changes in market/sub-market fundamentals will also factor in past/current/future prices.
It’s not uncommon to have 2 properties (identical for our example purposes) sell at very different prices because of the pricing factors of each individual transaction.
Below is a link to Costar. They are the commercial real estate standard for commercial data and their Costar Comps product is invaluable. That would be the first place that I’d go for market rents and commercial transaction details.
Their information is research by an individual and paid use is needed, but I believe that they have weekly and monthly subscriptions.