Acquisition teams often focus on visible defects. The greatest financial impact may instead come from undocumented alterations, plant at end of life, non-compliant use or several moderate issues converging in the same period. Risks must therefore be read in the context of the transaction, not by appearance alone.
When does a finding become a red flag?
A red flag is a finding capable of materially affecting safety, lawful use, business continuity, collateral value, price or the feasibility of the intended plan. It need not be an emergency. Missing consent, insufficient electrical capacity or an unverified refurbishment claim can be equally important.
Significance is not simply the repair price. Consider failure probability, time to intervention, tenant impact, insurability, design and permitting lead time, and the evidence available.
Eight risk areas
1. Structure, envelope and water
Cracking, deformation, corrosion, leakage, failed waterproofing and façade deterioration may have local or systemic causes. With moisture, the source matters more than the stain. Cosmetic treatment without removing the cause undermines the credibility of any CAPEX allowance.
2. Heating, cooling and ventilation
Plant may operate but lack capacity, efficiency or spare-parts support. A new tenant or higher occupation density can consume the remaining margin quickly. Poor controls, hydraulic imbalance and unreliable metering can create persistent cost and comfort problems.
3. Electrical systems and capacity
Condition, protection, inspections, backup supply and available capacity all matter. Refurbishment claims should be tested against site evidence; renewal on one floor is not a complete building-wide replacement.
4. Fire safety and lifts
Escape routes, compartmentation, fire doors, detection or suppression systems may no longer align with altered layouts. Lift risk includes inspection findings, repeated failures, obsolescence and the timing of modernisation.
5. Documentation and approvals
Missing drawings, expired inspections and undocumented alterations increase uncertainty. Approved use must be compared with actual operation. A problem may only surface when a tenant changes, the property is refinanced or an insurance claim occurs.
6. Lettable areas and lease obligations
Differences between designed, occupied and lettable areas can affect rent and service charges. Landlord and tenant obligations should be checked against fit-out condition, common services and equipment dedicated to specific occupiers.
7. Deferred maintenance and concentrated CAPEX
No single element may be critical, yet a roof, heating plant, cooling system and lifts reaching end of life together can create a concentrated cash requirement that absorbs early holding-period returns.
8. Energy, climate and future competitiveness
High consumption, overheating, flood exposure or inability to meet occupier requirements may not stop current use but can affect OPEX, letting and finance. The relevant question is not only today's condition, but whether a feasible renewal pathway exists.
How should risks be ranked?
A decision-ready register combines severity, likelihood and urgency. Safety, legal compliance, business continuity and preservation of value deserve explicit treatment.
- Immediate: a potential deal-breaker or a condition to be resolved before completion.
- Short term: work after takeover, often supported by a reserve, retention or contractual undertaking.
- Medium term: planned renewal based on condition and service life.
- Long term: strategic modernisation or adaptation.
Each finding should identify its evidence and confidence. A verified site condition carries different weight from an unsupported statement or inaccessible construction.
How findings affect the transaction
TDD does not determine purchase price, but it gives the parties evidence for negotiation. Depending on the issue, the buyer may seek a price adjustment, retention, specific warranty, completion of work before closing, additional documents or a dedicated CAPEX reserve.
Not every future cost should be deducted one-for-one. Investors need to distinguish inherited neglect from improvements required by their own strategy. Timing also matters: the same expenditure has a different value if it arises in three months or ten years.
What should be prepared for the review?
- design, as-built and alteration records,
- occupation approvals and permits,
- statutory inspections, service contracts and failure history,
- energy and utility consumption data,
- repair history and planned capital expenditure,
- leases and allocation of technical obligations where in scope,
- the intended use, holding strategy and lender requirements.
The earlier data-room gaps are identified, the more time remains to explain them or commission targeted investigation. Material deal-breakers should be communicated immediately, with a concise 48-hour post-inspection summary available for fast-moving transactions.

