Key risks for tenants across the life of a commercial lease


26th March 2026

Entering a commercial lease is a significant commitment with legal, financial and operational consequences. Tenants should approach the transaction as a long-term risk allocation exercise, from heads of terms through to exit. Early planning, robust due diligence and disciplined contract management can prevent costly disputes and disruption.

Negotiation risks

Poorly drafted or incomplete heads of terms can lock in unfavourable positions on rent review mechanics, repair, alienation and break rights. Standard landlord forms often shift disproportionate risk onto tenants, including full repairing obligations regardless of the property’s condition at the outset of the lease. Inadequate due diligence on title, planning, building compliance, service charge regimes and superior leases can expose tenants to constraints and unexpected costs. Mitigation involves insisting on detailed, subject-to-contract heads, commissioning a building survey and mechanical and electrical (M&E) report, reviewing title and superior lease obligations, and securing caps or carve-outs for key liabilities.

Legal obligations

Tenants typically assume repairing, decorating and statutory compliance duties, often on a full repairing and insuring basis. Without a schedule of condition, tenants may be liable to put the premises into better condition than at grant. Compliance risks arise under health and safety, fire safety, accessibility and environmental regulations, which may sit with the tenant in occupation. Alterations, signage and user clauses can be restrictive, with consent regimes that are qualified or absolute. Assignment and underletting provisions, if too restrictive or coupled with onerous authorised guarantee agreements, can impede early exit. Tenants should seek a robust detailed written schedule of condition accompanied by photographs, limit compliance obligations to the demised premises and ensure consent tests are not unreasonably withheld or delayed.

Financial risks

Exposure includes base rent, service charge, insurance rent, business rates and utilities. Service charges can be volatile, especially in multi-let buildings, and may include capital items. Unfavourable rent reviews, such as upwards-only open market reviews, can drive cost escalation. Personal or parent guarantees and rent deposits tie up capital and increase downside on default. Dilapidations at lease end can be substantial if not managed early. Tenants should negotiate service charge caps, exclude capital expenditure where possible, seek turnover or stepped rents where appropriate, and secure balanced rent review assumptions. Break options should be unconditional or subject only to objective conditions, with clear notice mechanics. Financial modelling should include worst-case service charge, rates revaluations and dilapidations provision.

Operational challenges

Fit-out projects can be complex. Risks include delays, landlord approval processes, and the technical challenge of integrating with the base build. Restrictions on hours of use, deliveries, ventilation or plant can impair trading. Landlord works and redevelopment clauses may allow disruption or termination. Business continuity can be affected by insurance gaps and inadequate rights to quiet enjoyment and support. Tenants should secure clear fit-out protocols and rights over common parts, negotiate redevelopment protections or compensation, and require landlord warranties around building systems and services performance.

Impact and mitigation

Unchecked, these risks can lead to budget overruns, operational downtime, disputes and impaired exit options. A proactive strategy includes engaging specialist real estate and building consultants early, conducting full technical and legal due diligence, negotiating balanced allocation of risk with precise drafting, implementing compliance and maintenance plans during the term, and planning the exit well in advance with a clear dilapidations strategy. Continuous monitoring of key dates, notices and review triggers helps preserve rights and control cost.

See how Blake Morgan’s Property Dispute Resolution team can help you here.

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