The Douglas councillor says a change in culture has prompted his resignation.
His resignation as chair also means he will no longer sit on the executive committee.
Mr Pitts has served the board for more than 10 years, so what has changed?
Councillor Andrew Bentley succeeds Mr Pitts as chair.
Buchan School could become 85 homes under new plans
A former school in Castletown could become a new 85-home housing estate under a new planning application.
Flood defence plans scrapped after five planning objections
Infrastructure Minister Tim Crookall says his department changed its mind about flood defences for Ramsey after five comments on a planning application.
TT food van needed for trackside car park
The Department of Infrastructure says it's looking for someone to feed hungry TT fans during this year's festival.
Northern roadworks to hinge on Mountain Road reopening
The Department of Infrastructure says it won't close two parts of the TT course outside Ramsey at the same time.
Beer festival to return this week
One of the Island's most popular events gets underway this weekend.
Dublin to sign friendship agreement with Douglas in summer
Douglas Council says it's ready to sign a friendship and co-operation agreement with Dublin.
Total of 35 properties on council's dilapidated list
Douglas Council says it has 35 properties on a dilapidation blacklist.
Equipment being sold off from popular former bar
There's a chance to own a piece of a well-known bar which shut its doors last year.
