Lionheart, the benevolent fund for chartered surveyors and their dependents, is facing a funding shortfall after a year in which a bumper legacy saw it through its financial difficulties.
Chief executive Mike Carter said Lionheart was still suffering from the fall in the stock market and growing demand for its needs-led provision.
It faces a £250,000 deficit in the year ahead.
Its team of professional staff and volunteers provide advice and support to more than 1,000 members of the profession each year.
Individual and corporate support within the property sector was hard to come by, given the competition for good causes beyond the profession, said Carter. "It is difficult to encourage many people, who may happily support other worthy causes, to recognise the need to support people within their own profession."
In 2003, a legacy of £240,000 helped the charity balance its books.