Last year, Massachusetts adopted a new Short Term Rental tax, which will impact hundreds if not thousands of homeowners here on Cape Cod. Beginning on July 1, 2019, all short term rentals are subject to this new tax which varies by town and can exceed 14% of the total rental costs of a home. As of 2017, nearly 37% of the homes on Cape Cod are seasonal, and many of those are rented during the peak summer months.
Here's a good summary of the new law and what will be required of homeowners from the Cape and Islands Association of Realtors: https://www.cciaor.com/shorttermrentals/
If you are considering building a new custom home or remodeling your existing Cape Cod property, download our construction cost guide for current per square foot costs to build on Cape Cod: 2018 Construction Cost Guide