Sure. But why do you think you won't be able to deduct it, if paid in 2018? Is your property valued at more than $750,000? Perfectly feasible if you live in CA.
If the total of your 2018 itemized deductions for real estate tax plus state income tax (or state sales tax) will be more than $10,000, you will probably benefit from paying the Feb. 2018 real estate tax installment in 2017. This is assuming that the February installment has already been billed. See the following notice on the IRS web site.
The value of the property has nothing to do with the deduction for real estate tax. $750,000 is the maximum mortgage debt for which you can deduct mortgage interest in 2018.
