K.P.
If you don't have a budget set and don't know how much "life" costs, I would suggest waiting another couple of months to make sure you can really afford this!
I would strongly suggest keeping a list of your CURRENT bills... all of them, including daily expenses. Keep it as a running journal and then add it all up at the end of a week and again at the end of the month. Call the cable company and ask what cable and internet cost. Again, these are basic facts you can find on your own and you should be able to estimate these with little effort on your part.
Items to consider:
- Rent
- Car maintenance
- Gas
- Electric (ask the landlord for an estimate)
- Gas (if applicable and ask the landlord)
- Groceries
- Eating out
- Clothing
- Diapers
For Us (we live in NY so keep that in mind)
- Mortgage: $2600 month
- Water/Sewer: $35 month
- Cable/Internet: $200 month
- Electic/Gas: average of $300 month (depending on season_
- Groceries: $650 month
- Cars: $100 month
- Gas: $250 month (at minimum, but I get reimbursed through work)
We have a budget spreadsheet and (including childcare b/c we both work full time) it costs us approximately $6000 per month to live our (non extravagant) lives.
Remember that it's not the "planned" costs that get you... it's the unplanned ones that will wipe you out. Do you have a savings account? Do you have health insurance? Do you have stable incomes?
Make sure that you can "really afford" to move out before you do it! Before my BIL moved out of our basement, I had him "pay" to live with us for two month to be sure he could really afford it. He "paid" rent, groceries, utilities, etc for two months (of course I gave the money to him when he left) to be certain that he really COULD afford to be on his own. If this is an option for you, do it. Not only will you realize where your money is going, you will have a nice chunk of change to start your savings!
Good luck. I hope this works out!