Every day a unit sits empty costs more than the listing did.

A unit at fifteen hundred a month loses fifty pounds a day empty, which is more than most listings cost for a month.

That makes speed the dominant variable, and a channel producing fewer but faster applicants can be worth far more than one producing many slow ones.

Listing platforms report views and enquiries because those are what they can see; none of them knows when the unit was actually filled.

Matching the lease back to the enquiry source, with the listing date carried through, gives days vacant per channel, which is the figure a landlord loses money on.

For a small portfolio it is frequently the only figure that matters, because the listing fees themselves are a rounding error beside two weeks of vacancy.

Screening takes time, and a channel producing applicants who fail credit or income checks is consuming that time while the unit stays empty.

Counted only on signed leases, that channel looks merely unproductive; counted with its failed applications, it is actively expensive.

Keeping unqualified applicants in the enquiry file makes the real cost per signed lease visible for each source.

It also identifies where the screening criteria and the listing copy disagree, which is usually fixable in an afternoon.

That is a cheaper remedy than changing channel, and it is invisible without the failed applications in the file.

A twelve-month lease and a rolling monthly agreement are different amounts of revenue and different amounts of future work.

Sources differ in what they produce: a corporate relocation channel and a general listing site bring tenants with very different intentions about length.

Ranking on lease value rather than on rent captures that, and the report sums by lease rather than by monthly payment.

Renewals are kept separate, because a renewal is retention and crediting it to the original listing would make every channel look excellent.

Whether a source's tenants renew is itself one of the better findings available, and it takes a second year of data to see.

A manager growing the portfolio is also marketing to owners, and those enquiries arrive through the same website as the tenant enquiries.

Pooled, the tenant volume swamps the owner signal entirely, and the channels that produce owners look ineffective because they produce few enquiries.

Separating the two funnels at the lead file is essential, and the management fee rather than the rent is the revenue side for the owner half.

Most small managers have never run that second report, and it is the one that decides whether the business grows. Filling units keeps this year's income; winning owners is next year's, and they are bought through entirely different channels at entirely different prices.