Property consultancy Dataloft has produced an index to monitor what it says are the four key factors behind buy to let investors' decisions as to where to buy.
The 'PRS Squared' index monitors key indicators for 50 towns and cities, and is explained in more detail in an article on the features section of Letting Agent Today.
This indicators include an assessment of the local economy, best judged through local earnings and job growth.
A separate but associated factor is the nurturing of new businesses - towns that positively want start-ups and pioneering technology.
Demographic data reveals a lot about the scale and strength of local rental markets.
Meanwhile affordability is, perhaps unsurprisingly, another crunch factor for rental demand.
The full article, written by Dataloft director Sandra Jones and senior analyst Julia Middleton, lists the locations where the company believes buy to let has strong potential.
It's well worth a read and it's here.