lilias - if we're successful getting #3 we'll have 3 in a 3br house... but one of the bedrooms is the office... so essentially they'll all be sharing at some stage if we don't upgrade in a few years (#3 would be in our room for a year or so and then coming in to us for another year or so, if anything like it's siblings! haha) I think you can make any bedroom arrangement work... it's not an essential that each child needs it's own room.

As for expenses... hmm... initially I don't see us spending anything much except for a new car seat. We have everything else. But as they grow, there'll be extra preschool fees, and anything else you enrol them in, sport/music/swimming whatever you want to do (mind you, these aren't essentials either LOL). But I can see the financial impact later on rather than straight away if that makes sense.

We already have a car that would accomodate 3 kids (or more) so that wouldnt' be a problem, but at some stage I think I would prefer to move up to a 4br house... just wait & see I guess. Not a fan of moving, so if this rental ends up being THAT long term, we could just rethink where our computers live in order to have 2 bedrooms for the kids.

I think it's just one of those things that you just MAKE work. Probably a good idea to keep financial hardship in mind tho... perhaps have income protection insurance or something in place so you're not hit so hard if something does happen. (oh... just read the other replies... yeah.. what Astrid said LOL)