So the new dressing room would have to increase the market value of the property by over $16,000 in order for them to add 10,000 to your assessment. Anything lower will not reach the exception event threshold for an increase.
I am the co-founder of Prime Property Tax Negotiation...a Portland, OR based company that lowers commercial assessed property values on a contingency fee basis. Your house works the same way...if you increase the value...the taxes will go up. That includes raising the value through upgrading the improvements, as well as upgrading the use.
Tom Inglesby, Broker
RE/MAX Equity Group inc
I am sure if you call the tax assessor's office, they could give you an idea of what the increase might be.