GUIDES
A trustee’s capacity must be assessed against the trust functions and transaction in issue. A conveyancer should check the lawful route before land held on trust is sold.
Author: Nellie Supports Ltd
Publication Date: 15/05/2026
Mental Capacity Act 2005, c. 9. Available at: https://www.legislation.gov.uk/ukpga/2005/9/contents
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A trustee’s capacity must be assessed against the trust functions and transaction in issue. A conveyancer should check the lawful route before land held on trust is sold. The sections below explain the evidence, practical steps and limits of the assessment or process.
Where land is held on trust and a trustee’s capacity is in doubt, assess the actual functions and transaction and ask the conveyancer to identify the lawful route. Retirement, replacement, a properly authorised attorney or a court order may be relevant depending on the trust, ownership, authority and statutory conditions. The Trustee Act 1925, delegation rules and Land Registry requirements must be considered together; a capacity report alone does not convey title or choose the route.
Most trustee capacity questions arrive with a sale already in motion. Co-owned land is held on trust, a valid sale generally needs the trustees to act together, and the conveyancer discovers that one trustee, often an elderly parent or a co-owning spouse, may not have capacity to join in the transaction. At that point the trusteeship, which the family may never have thought about, becomes the obstacle standing between the sale and completion, and it has to be resolved on evidence rather than goodwill.
The question is not trusteeship in the abstract but this trustee's capacity to join in this sale: to understand that the land is held on trust, what is being sold and its approximate value, what the trustee's signature accomplishes, where the proceeds must go under the trust and how the sale serves or affects the beneficiaries, including the trustee themselves where they also hold a beneficial share. The assessment should be anchored to the actual transaction on the conveyancer's file, with its real price and real destination of proceeds.
Alongside the ordinary property transaction information, the trustee must grasp the trust dimension: that they sign in a representative capacity, that the proceeds are trust money to be dealt with under the trust rather than personal funds to spend, and who is entitled to what once the sale completes. Where the trustee is also a beneficial co-owner, the assessment should test whether they can distinguish their own share from the whole, because conflating the two is one of the commonest signs the office has outrun the person's understanding.
Where the trustee cannot make the required decision, the conveyancer must check the trust deed, Trustee Act powers, any valid delegation or attorney authority and whether a court appointment or consent is required. Court of Protection permission can be required for replacement where the incapable trustee is also beneficially entitled, subject to the statutory conditions. Do not assume either that a family member can sign automatically or that replacement is the only lawful route in every co-owned-land case.
The instinctive family solution, asking the trustee's attorney under a lasting power of attorney to sign instead, usually fails, because trusteeship is a personal office and an attorney cannot automatically exercise the donor's trustee functions. Limited statutory exceptions exist for beneficial co-owners of land, and whether they apply depends on the precise ownership structure, which is a legal question for the conveyancer. The capacity report's task is to establish the factual foundation, clearly and contemporaneously, upon which that legal analysis rests.
Raise the issue early enough to obtain the trust and title papers, clarify the capacity question and investigate the lawful conveyancing route. The timetable for assessment, any further evidence and a court application varies. Revisit capacity evidence where there is a material change or the original opinion no longer addresses the decision; do not promise a fixed period for completion.
Ask the conveyancer what evidence the actual transaction and any application require. A capacity opinion should identify the trustee functions, decision and relevant time, while legal documents establish ownership, appointment and authority. A general statement about confusion may be inadequate, but a professional report does not guarantee that requisitions will be avoided or title issues resolved.
The report should identify the land, the trust arrangement and the sale in progress, the relevant information for the trustee's decision including the representative character of the signature and the destination of proceeds, the practicable steps taken, the trustee's own account, the functional analysis, the causative link to any impairment and a conclusion confined to the trustee decisions assessed. It should be written for the audiences that will actually use it: the conveyancer, the trust's advisers, the Court of Protection and the registered title itself.
Assess the trustee functions and actual sale, then let the conveyancer apply the trust, delegation and title rules to identify who may lawfully act. Record the person’s abilities and limits separately from the legal authority. Neither a diagnosis nor a report alone establishes that a trustee must be replaced or that a sale is valid.
No. A diagnosis alone does not establish incapacity. For a Mental Capacity Act decision, provide practicable support, examine understanding, retention, use or weighing and communication, then explain whether any inability is caused by an impairment or disturbance of mind or brain. The conclusion is specific to the decision and time.
The trust documents, details of the land and the proposed sale, the trustee's role in practice and medical records. The assessment must address the trustee functions in question, not capacity in general, because it is the trustee role the law needs answered.
Assess as soon as a trustee's capacity is doubted and a dealing with land is contemplated: the replacement route takes time, and discovering mid-conveyance that a trustee cannot validly act is how sales fall through. A conclusion about one decision does not establish capacity for another.
The related pages below explain connected decisions, evidence requirements and legal processes.
Before seeking a report, write down the exact decision, relevant date, reason for concern and intended use. Gather the documents that explain the real options and any communication needs. Check any required form or court direction, agree the scope and total fee, and clarify how missing evidence or further questions will be handled.
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