Tendering can be a right pain, but if you feel the rewards are worth it then fill out the paperwork, some info is not required at the bidding stage, it just depends how. Badly the tendering process is put together, it should also make you aware of the split for cost vs service, or in some cases it's purely a vote by the residents of the building.
You can only put in what you feel is a fair price and list what you are going to do, keep it straightforward and answer the questions, no waffle.
We have several housing association contracts ( 3 years ) that the residents voted on and also won a hospital contract ( 3 years ) because of its value ( over 24k ) was a very long process but well worth it.
Go for it, it's good experience, if you get it you never know what else may follow

Darran