A pre-purchase site viability report does far more than flag the obvious constraints. It provides a commercial and planning-led view of a site’s current position, helping buyers understand not only what they are acquiring today, but also what future value might be unlocked.
A key advantage is the review of existing planning consents and any associated Section 106 agreements. These documents can have a major impact on land value, development cost and delivery risk. By examining the planning history in detail, a viability report can help establish the site’s existing use value, clarify what obligations are already attached to it, and identify whether there are restrictions, contributions or conditions that could affect profitability. This gives purchasers a much firmer basis for assessing whether the asking price reflects the site’s true position.
The report can then go further by exploring what additional development may be possible. That might include intensification of the existing scheme, changes to layout, alternative uses, or revised massing that better reflects current market demand and planning policy. In many cases, the value of a site is not just in its current consent, but in the opportunity to improve or expand it through a better-informed development strategy.
Another major benefit is value engineering of the design. A well-prepared viability review does not only ask whether a scheme can be built – it asks whether it can be improved. By reviewing density, unit mix, build costs, specification and overall design efficiency, it is often possible to identify ways to add value while protecting deliverability. Small adjustments to configuration, scale or planning approach can have a meaningful effect of gross development value and overall return.
Ultimately, a pre-purchase site viability report gives buyers a clearer understanding of risk, existing value and future upside. It combines planning analysis, legal obligations and development potential into one informed view, allowing purchasers to negotiate with confidence and make smarter acquisition decisions.
If you are looking to purchase a site and need some viability advice, please get in touch with us today.



