If you're about to rent a property from a landlord to run as serviced accommodation, checking the numbers before you sign is the single most important step — and there's more than one type of tool that claims to help. Here's an honest look at what's actually out there and what each one is really built for.
Market Data and Analytics Tools: AirDNA, Mashvisor
AirDNA is a well-established short-term rental market analytics platform, widely
used to benchmark occupancy rates, average daily rates, and revenue potential for a
given area based on real Airbnb and Vrbo market data. It's genuinely useful for
understanding what a market is doing at a high level, and it covers markets globally,
not just the UK.
Mashvisor is a US-focused real estate investment analytics tool that covers both
traditional buy-to-let and short-term rental analysis, with cash flow and ROI
comparisons. Its core strength and coverage are centred on the US market, so UK
investors evaluating a specific rent-to-SA deal will find its data coverage thinner
here than in its home market.
Neither of these is built around the specific mechanics of a UK rent-to-SA deal —
renting a property from a landlord (no mortgage, no purchase) and running it as
serviced accommodation — which changes the cost model materially versus owning and
letting a property outright.
UK Property Market Data: PropertyData
PropertyData is a genuine UK-focused property market data tool, covering rental
yields, comparable sales, planning history, and Article 4 direction/HMO licensing
checks across UK postcodes. It's a solid choice if you need broad UK property market
research. It isn't built specifically around live deal-sourcing with an automated
below-market-value score, or an R2SA-specific cashflow model.
Where PropertyAlert Fits
PropertyAlert is built specifically for two things most general-purpose tools don't
combine: automatically scoring live UK property listings against Land Registry and
postcode benchmark data to flag genuinely below-market deals, and running an R2SA-
specific cashflow model (see how PropertyAlert actually calculates SA profitability)
on top of that same listing — real nightly-rate and occupancy data by postcode sector,
a fixed 12% all-in cost model, and rate ceilings that stop an unrealistic projection
being shown for a specific property. You see the deal, the BMV score, and the realistic
monthly cashflow if it were run as serviced accommodation, in one place, without
switching between a listings site and a separate analytics tool.
Which One Should You Actually Use?
Honestly: it depends what stage you're at. If you're researching a market you don't
know yet, AirDNA's broad short-term rental data is genuinely useful. If you want wider
UK property market context beyond SA specifically, PropertyData covers more ground. If
you're looking at a real, live UK property you're considering renting for R2SA and want
the deal quality and the SA cashflow numbers checked together automatically rather than
manually cross-referencing two tools, that's the specific gap PropertyAlert is built
to fill — see the SA deals dashboard for what that looks like on real, live
listings.