Understanding acquisition surveys and TDD
Technical due diligence is a critical step in any commercial property acquisition. It provides an independent assessment of the building's physical condition, identifies risks and quantifies the capital expenditure likely to be needed over the hold period.
What a TDD report covers
A comprehensive TDD report assesses the building structure and fabric, roof condition and remaining life, external walls and cladding, mechanical and electrical services, fire safety systems, lift installations, accessibility compliance, asbestos position and energy performance. The report typically includes a capital expenditure forecast over five or ten years, quantifying the investment needed to maintain the building in good condition.
Common risks identified
The most common risks identified in commercial TDD include deferred maintenance on building services nearing end of life, flat roof coverings requiring replacement within the hold period, fire safety compliance gaps including compartmentation deficiencies and outdated alarm systems, cladding and facade issues particularly on buildings constructed between 2000 and 2018, and asbestos-containing materials requiring management or removal during refurbishment.
How TDD informs the deal
The TDD findings feed directly into the commercial negotiation. Identified defects and capital expenditure requirements can be reflected in price adjustments, warranty provisions, retention funds or conditions precedent to completion. A well-structured condition survey gives the buyer a clear picture of what they are acquiring and the costs they will face.
Timing and scope
The TDD should be commissioned as early as possible in the due diligence period. For straightforward single-tenanted properties, the process typically takes two to three weeks from instruction. Multi-tenanted or portfolio instructions require more time. The scope should be agreed upfront to ensure it covers the specific risk areas relevant to the property and the buyer's business plan.
Frequently asked questions
What is technical due diligence?
A detailed assessment of a property's physical condition, compliance and capital expenditure requirements, commissioned before acquisition to identify risks and inform the negotiation.
When should I commission a survey?
As early as possible in the due diligence period, ideally before heads of terms are agreed. This allows findings to be factored into price negotiations or warranty provisions.
What does a TDD report cover?
Building structure, roof, external walls, M&E services, fire safety, lifts, accessibility, asbestos, energy performance and a capital expenditure forecast over the hold period.
How much does a commercial property survey cost?
From around 3,000 to 5,000 pounds for a single commercial unit. Larger or more complex properties are priced on a case-by-case basis. The cost is typically a small fraction of the acquisition price.
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Pre-acquisition TDD reports for commercial property investors and occupiers.
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Savas Bulduk
BSc (Hons) MRICS, Director & Chartered Building Surveyor.
Writes on Building surveying, Fire safety and facade, External wall systems, Technical due diligence, Contract administration. See the full team profile.