Hello, I am Keith, one of the experts on Just Answer, and pleased to be able to help you with this question. The news that I have to impart will not, however, be to your liking.
Here is the advice from Wolters Kluwer:
'The Chancellor continued his attack on buy-to-let property owners with an announcement that a higher rate of stamp duty land tax (SDLT) will be charged on BTL portfolio and second property owners on purchases from April 2016 while the payment window for SDLT will be reduced to 14 days in 2017'
Please note the enhanced script. Unfortunately the enhanced 3% SDLT is applicable to second properties, not just second residential properties.
I am so sorry to have to rain on your parade.