Kent architect Wyatt Glass faces a £4500 legal bill after being struck off the register for two years for unacceptable professional conduct.
An ARB professional conduct committee last week heard that Wyatt made up builders' estimates for a property conversion and pressurised a contractor to sign one offer without visiting the site.
Wyatt pledged to provide four quotes for his client, but failed to issue two sets of tender documents and attempted to cover up the mistake.
In mitigation he said that he was suffering stress after his brother's business in South Africa had collapsed. The brother had moved in with Wyatt after receiving death threats. Wyatt pleaded guilty to the charge of 'failing to carry out professional work faithfully and conscientiously.'
Chairman of the committee Michael Churchhouse said: 'We accept this was one of those one-off pieces of incompetence.'
The two-architect Sevenoaks practice faces severe financial pressure from solicitors' fees, the prospect of losing fee income and the cost of removing the name 'architect' from stationery.
'I'm not sure if the decision is to distance the ARB from these kind of actions, which I understand, or if it is intended that I don't make a living from architecture,' Glass said. 'I want to make sure I don't transgress the spirit of the judgement.'