VENDOR SURVEYS The strategic advantage of vendor’s surveys

Andrea Jutrzenka

Andrea is a chartered building surveyor with over 25 years of post-qualification experience in the commercial property sector. She specialises in vendor surveys, pre-acquisition due diligence, condition surveys, and dilapidations advice, helping clients understand building risks and maximise value throughout the property lifecycle. Andrea works with both public and private sector organisations and is recognised for her practical, commercially focused approach to building surveying. She is passionate about training and knowledge, and as well as being an MRICS surveyor she holds TechIOSH and AIFireE qualifications.

Andrea outlines the advantages of sellers commissioning vendor surveys prior to completing commercial property transactions, not least, to mitigate risk. It also gives the vendor a well-informed understanding of the asset to be sold. She recommends a greater take-up, to reduce delays down the line. 

Commercial property transactions can falter for many reasons, but one of the most common is the discovery of unexpected issues during a purchaser’s due diligence process. Technical surveys undertaken late in negotiations can reveal building defects, compliance gaps, or significant lifecycle costs that were previously unknown to both parties. When this occurs, transactions may slow, prices may be renegotiated, and in some cases deals collapse entirely.

One increasingly adopted way to mitigate this risk is through the commissioning of a vendor survey before a property is brought to market.

Despite the advantages this approach can offer, many sellers still rely on the traditional model of waiting for the buyer to commission surveys once terms have been agreed. While common practice, this can introduce uncertainty and reduce the seller’s control over the transaction. A vendor survey allows sellers to understand the condition of their asset before marketing begins, providing clarity on potential risks and enabling informed decision-making from the outset.

What Is a vendor survey – and why does it matter?

A vendor survey is a comprehensive inspection and assessment of a property commissioned by the seller prior to marketing. The survey typically reviews the building fabric, structure, services and compliance matters, identifying both existing defects and potential future liabilities.

Rather than reacting to issues uncovered during a purchaser’s technical due diligence, the vendor gains early visibility of the asset’s condition. This knowledge enables potential risks to be managed proactively and ensures discussions with prospective buyers are based on clear and defensible information.

In practical terms, the vendor survey shifts the balance of the transaction. Instead of responding to unforeseen technical findings later in the process, the seller is able to approach negotiations with a well-informed understanding of the property.

The practical benefits

Professionalism and transparency

Buyers in the commercial property market are increasingly cautious of unforeseen liabilities. When technical information is provided at the outset, it demonstrates transparency and signals that the asset has been professionally assessed.

Properties marketed with this level of preparation often attract more informed interest, as potential buyers can better understand the condition of the building and the risks associated with ownership.

Accurate and defensible pricing

Transactions frequently encounter difficulties when a purchaser’s survey identifies unexpected defects. Vendor surveys allow sellers to establish realistic pricing from the outset or address relatively minor issues before they become negotiation obstacles.

This reduces the likelihood of late-stage price adjustments and helps maintain certainty around the agreed value.

More efficient transactions 

Where technical information is available from the beginning of the marketing process, purchasers are able to progress their due diligence more efficiently. Queries can be addressed early, and technical concerns resolved before they develop into delays.

As a result, transactions involving vendor surveys often progress with fewer interruptions and reduced negotiation friction

Reduced risk of deal failure

The discovery of significant defects late in the transaction process remains one of the most common causes of failed property sales. Such findings can lead to substantial price reductions or the withdrawal of the purchaser entirely.

By identifying potential issues at an early stage and determining how they are addressed or disclosed, vendor surveys allow sellers to maintain greater control over the transaction process.

Common issues identified during vendor surveys

Building surveys commissioned prior to sale frequently identify a range of matters that may influence negotiations if discovered later by a purchaser. Watts surveyors commonly encounter the following:

• Compliance and regulatory matters - Vendor surveys may identify gaps in documentation or regulatory compliance, including fire safety provisions or historic alterations. Addressing these matters before marketing begins can prevent them becoming obstacles during the purchaser’s due diligence process

• Lifecycle and maintenance considerations - Mechanical and electrical systems approaching the end of their service life are a common finding. Early identification allows sellers to provide clarity on anticipated replacement or maintenance requirements, enabling buyers to incorporate these costs within their investment appraisal

• Building fabric defects - Issues relating to roofing systems, façades, external envelope elements or drainage are also frequently encountered. Identifying these issues early provides the opportunity for remedial works to be undertaken or for accurate cost information to be provided to prospective purchasers.

Managing information during the sales process

A common consideration for vendors commissioning a survey is how much information should be shared with potential buyers.

In practice, a structured approach is often adopted. A summary of key findings may be provided within the marketing documentation, with the full survey report made available to serious parties during the due diligence stage. This allows transparency to be maintained, while enabling the vendor to manage the disclosure of detailed technical information appropriately.

A proactive approach to property transactions

In an increasingly transparent and risk-conscious property market, preparation plays a critical role in the success of commercial transactions. Vendor surveys provide clarity on the condition of an asset, allow potential risks to be managed before marketing begins, and support negotiations based on informed technical understanding.

For property owners seeking to reduce transaction risk and maintain momentum through the sales process, commissioning a vendor survey prior to marketing can provide a significant strategic advantage.

At Watts, we have worked with a range of public sector organisations, including the MOD, the Department for Education, local authorities, the NHS, and several museums, providing surveys, property advice, and transaction support.

To date, we have not seen significant uptake of vendor surveys within this sector, perhaps due to the perceived upfront costs. However, in an increasingly challenging market, with a growing focus on long-term value, sustainability, and informed decision-making, it is surely only a matter of time before their benefits are more widely recognised.