“29 Costs or expenses (1) The costs of and incidental to– (a) all proceedings in the First-tier Tribunal, and (b) all proceedings in the Upper Tribunal, shall be in the discretion of the Tribunal in which the proceedings take place. (2) The relevant Tribunal shall have full power to determine by whom and to what extent the costs are to be paid. (3) Subsections (1) and (2) have effect subject to Tribunal Procedure Rules.”
“13. Orders for costs, reimbursement of fees and interest on costs (1) The Tribunal may make an order in respect of costs only— (a) under section 29(4) of the 2007 Act (wasted costs) and the costs incurred in applying for such costs; (b) if a person has acted unreasonably in bringing, defending or conducting proceedings in – (i) an agricultural land and drainage case (ii) a residential property case, or (iii) a leasehold case; …”
"28. At the first stage the question is whether a person has acted unreasonably. A decision that the conduct of a party has been unreasonable does not involve an exercise of discretion but rather the application of an objective standard of conduct to the facts of the case. If there is no reasonable explanation for the conduct complained of, the behaviour will properly be adjudged to be unreasonable, and the threshold for the making of an order will have been crossed. A discretionary power is then engaged and the decision maker moves to a second stage of the inquiry. At that second stage it is essential for the tribunal to consider whether, in the light of the unreasonable conduct it has found to have been demonstrated, it ought to make an order for costs or not; it is only if it decides that it should make an order that a third stage is reached when the question is what the terms of that order should be."
“It is important to note that neither Ridehalgh nor Willow Court decide that unreasonable conduct must involve vexatious conduct or harassment. On the contrary, the UT make clear in Willow Court that unreasonable conduct can include conduct which is vexatious or designed to harass, but it does not require such conduct; that is just one way in which unreasonable conduct may be established.”