That's because the location is crucial to its success in delivering decent yields and returns some investors must undertake a lot of market research.
However, for those who are looking to find the top UK rental hotspots an interactive map is now available to help make an informed decision.
The best property hotspots for investors revealed
The map, from insurance firm Direct Line for Business, reveals where rental properties are concentrated to help an investor make a decision.
The map has been created by crunching official government data - which also reveals that, on average, for every seven owned homes in the UK, there are three rental properties.
However, that's an average figure and the property hotspot map also reveals that that the situation across the country varies significantly.
At a glance, landlords and buy to let property investors can assess the average rental price and the total number of rental properties in the area.
How to find the best buy to let investment areas
The data also reveals which rental homes are social or privately rented properties.
The map reveals that in inner London, 63% of houses are rented, in Manchester it is 59% and in Glasgow it’s 53%.
By comparison, only 17% of homes in East Dunbartonshire and East Renfrewshire are rental properties.
So while these areas with lots of rental properties often offer the best deals, many buy to let investors and landlords may also need to know where the black spots for property investment are.
Now research from property research website Home.co.uk has revealed some startling information.
Find where the buy to let property black spots are
Among their findings is that some popular areas in London feature in their top 20 black spots with property prices dropping by 7% over the past year.
The same research also reveals that the return on a landlord's investment is also in decline with 11 areas showing negative yield.
This occurs when the property value depreciates more than the property’s annual rent.
For instance, in the year to September, properties in London's Belgravia fell by 7.6% in value while the percentage yield dropped by 5%.
Another popular borough in London, Soho, saw its property prices fall by 6.8% while its yield for September was minus 3.5%.
Alongside sharp falls in Westminster, seaside towns in Britain have also seen a cooling of their property market with prices dropping by 7.1%, in Poole, Dorset, and yields falling by minus 2.5%.
Big property price falls recorded around the UK
Towns and cities in the north of England have also suffered big property price falls over the past year.
Doug Shepherd, a director of Home.co.uk, said the big price falls in central London areas are for very different reasons to the reasons for falls in the North.
He added: “Demand for premium property in central London led to prices of heating, last year they reached a peak, and they are now in the process of market correction.”
He said that in the North, prices fell due to the financial crisis and have yet to recover in many places.
