one contract account to multiple contracts

We have been running ISU/CCS for 8 years.

When we started we made a decision to have a one to one relationship between the contract account and the contract.

If a person owns 2 homes - they have 2 contract accounts, 2 contracts - and receive 2 bills.

We have been looking at changing this to go to a single contract account with multiple contracts.

I am wondering if anyone is doing this and can provide any pro's or con's doing it one contract account to many contracts.

Since we have been doing it one to one for so long - I am having a hard time thinking of pro's to doing it any other way.

I can see many problems with having multiple contracts to one contract account.

I am wondering if anyone has had experience doing this and what they have found works well and what doesn't work well.

Thanks for any information you can provide.

Scott Overmeyer