Vacant shops and offices sit empty for long periods while the owner declines lower offers. The behaviour is rational once the building is understood as collateral rather than as space.
Value is calculated from rent, not from occupancy
Commercial property is valued by capitalising its income, which means dividing the rent it produces by a yield appropriate to the asset and location.
Signing a lease at a reduced rent lowers that income permanently for the term, and the valuation falls by a multiple of the reduction rather than by the reduction itself.
An empty unit, by contrast, can still be valued on an assumed market rent, so vacancy damages the assessment less than a cheap lease does.
Lending covenants make valuation urgent
Loans secured on commercial property carry conditions requiring the debt to stay below a proportion of the building's value and the income to cover interest by a margin.
A fall in valuation can breach those conditions, obliging the owner to repay part of the loan or inject capital at short notice.
Holding out for a headline rent is therefore a way of protecting the financing structure, and the empty unit is a cost accepted to avoid a larger one.
Concessions preserve the headline figure
Owners bridge the gap using inducements: rent-free periods, contributions to fit-out costs, capped service charges and break clauses favourable to the tenant.
These reduce the effective rent substantially while leaving the stated rent intact for valuation and comparison purposes.
Because the concessions are private and the headline rent is public, market data can overstate what tenants are actually paying.
Tenant quality affects the multiple
A lease is worth more when the tenant is financially strong and the term is long, since the income stream is more certain.
Owners will therefore wait for a covenant strength that supports the valuation rather than accepting a weaker occupier at the same rent.
In retail, the identity of a tenant also affects the attractiveness of the whole centre, giving anchor tenants leverage that smaller ones lack.
The costs of vacancy are real but delayed
Empty units still incur security, insurance, maintenance and in many jurisdictions property taxes, all of which accumulate against no income.
Long vacancies also damage a street or centre, reducing footfall and making the remaining units harder to let, which eventually undermines the valuation being defended.
Which is why prolonged emptiness usually ends either in a change of use or in a sale to an owner whose financing does not require the same headline figure.