You would definitely need to do a disposition of your Principle Residence, since you rented it out. You possibly will have some taxable gains for the time that the house was rented before it was sold. You would use the amount that you actually got for the house (less expenses incurred to sell), regardless of what it was listed for.
If both you and your husband were co-owners, then you can split the disposition between you two. If you spilt 50/50, then yes, you would put 75000 each if the total proceeds was 150000.