Understanding Lease Covenants and Tenant Quality

In commercial property, the term 'covenant' refers to the tenant's financial strength and the reliability of their obligation to pay rent for the term of the lease. A strong covenant means a buyer can have reasonable confidence the rent will keep being paid; a weak covenant means the headline lease term is less reliable than it looks on paper.

What determines covenant strength

• The tenant's financial standing — publicly listed companies and government tenants generally carry the strongest covenants
• Trading history and financial performance for private businesses, including profitability and cash flow
• Whether the lease is guaranteed by a parent company, director's personal guarantee, or bank guarantee
• The tenant's dependence on the specific location versus interchangeable premises
• Industry outlook — a covenant is only as durable as the sector the tenant operates in

Assessing tenant quality in practice

For listed or government tenants, published financial reports and credit ratings provide a reasonably objective view. For private tenants, buyers typically rely on the lease documentation itself (bank guarantees, personal guarantees, security deposits), trading history where available, and general due diligence such as company searches. A selling agent's characterisation of a tenant as 'strong' or 'reliable' should be treated as marketing language until independently verified.

Key lease terms that affect real risk

Beyond covenant strength, several lease terms materially affect the risk profile of the income stream and are easy to overlook if a buyer focuses only on the rent and term.

• Break clauses — the tenant's ability to exit before the stated expiry, under what conditions
• Options to renew and whether they're at market rent or a pre-agreed formula
• Rent review mechanisms — fixed increases, CPI-linked, or market reviews
• Make-good obligations at lease end and their likely cost to the landlord if unfulfilled
• Permitted use clauses and how they restrict or protect re-leasing flexibility

A lease with an attractive headline rent and a long term can still be a weak asset if it includes an early break clause the tenant is likely to exercise, or if the rent sits well above achievable market rent on review.

Why this matters for price

Two properties with identical WALE and passing rent can justify very different prices once covenant strength and lease terms are properly assessed. Buyers who skip this step and price purely off the yield and lease term risk paying for a level of income security the lease doesn't actually provide.

A thorough lease review, ideally with input from a solicitor experienced in commercial leasing, is one of the more consequential steps in commercial due diligence — arguably more important to long-term performance than the physical condition of the building itself.