Mezzanine finance for commercial property development

Commercial property covers offices, retail and leisure space developed or refurbished to let rather than sell. The value is investment value: it comes from the rental income the building produces and the yield an investor will pay for that income, so the quality and length of the leases matter as much as the building itself. Demand is uneven across the commercial market, with well located, energy-efficient, flexible space in demand while secondary and dated stock struggles, and that split shapes both occupier appetite and lender comfort.

Senior lenders underwrite commercial development to the investment exit and lend cautiously where the space is speculative and unlet, because an empty building produces no income and therefore has little investment value. Energy performance rules add another gate, since space that cannot meet minimum efficiency standards is harder to let and to fund. Mezzanine bridges the equity gap so a developer can fund the scheme through to a let asset. We look hardest at occupier demand, the lease structure and the WAULT the exit valuation relies on.

A typical commercial property capital stack

Speculative commercial development carries letting risk, so senior debt is held conservatively and mezzanine bridges to a let, investment-grade asset. Illustrative only; every stack is sized case by case.

Why commercial value is income, not sales

A commercial building is worth what its income is worth. An investor buying an office or a retail unit is really buying the rent it produces, capitalised at a yield, so the leases are the asset. A long lease to a strong tenant is worth far more than the same building let short to a weak one, and an empty building is worth little as an investment however good the space is. That is why the weighted average unexpired lease term, or WAULT, and the covenant strength of the tenants sit at the centre of any commercial valuation.

Senior lenders underwrite to that investment exit and are cautious on speculative development, where the building is being built or refurbished before any tenant has committed. They hold leverage back to protect against a slow letting, which leaves a wide equity gap. Mezzanine finance bridges it and gives the term room to reach a let, investment-grade asset rather than stopping at a finished but empty building.

How mezzanine changes the equity maths

Commercial schemes tie up equity until the space is let and the investment value crystallises, which can be well after the building is finished. Mezzanine keeps that equity slice thin so a developer is not carrying the full letting risk in cash. The mezzanine leverage calculator shows how leverage affects the equity return, though on speculative commercial we hold combined leverage toward 85 percent to reflect the letting risk. Our note on why developers use mezzanine explains the wider trade-off.

Exit routes we underwrite to

Commercial schemes exit through an investment sale of the let building to a property investor, or a refinance onto long-term investment debt once the space is let and producing income. Both value the building on its rent and yield, so the exit turns on the letting rather than a construction cost. We size the term to give the space a realistic letting period and stress the exit against a cautious yield and a sensible WAULT, because an over-optimistic rent or an assumed instant let is where these cases most often come unstuck.

What our underwriting focuses on

• Occupier demand for the space and any pre-let or agreement to lease
• The likely WAULT and covenant strength of the target tenants
• The energy performance position and its effect on lettability
• The investment yield and exit value the letting supports

Energy performance is now a genuine gate: space that cannot reach the required efficiency standard is harder to let and to fund, so we factor the EPC position into the case from the outset. Where a scheme suits a different structure, we can arrange finance whole of market and point you to the right funder.