Sit down with dad, both of them, or whoever is the most easy to deal with and ask them what they think. Hopefully they'll be honest.
That is your best bet, instead of trying to second guess based on advice from a bunch of people who are not living in that house with you, extending the hospitality, let alone are not your parents.
You'll probably be surprised to find out they enjoy having you all there. This doesn't sound like the type of situation where there isn't a light at the end of the tunnel...such as indefinite unemployment situations. Those are stressful to say the least. It sounds like you and dh are able to contribute to the household, and are actively looking to leave. I say things are probably fine...but it couldn't hurt to find out if there is something they need or want done differently.
I think the key with you is to stay on task with looking for the right house. But just be careful not to get too hung up on unrealistic goals or dreams about this house. I've known people to want perfection, only to pass on many otherwise good deals. Otherwise, take your father's advice and make sure you buy what makes you happy. You afterall will be paying for it for the next 15 to 30 years if you have a mortgage. So it's not a decision to make lightly either, just so you can get out of your parent's hair.
I like the suggestion to rent, but be careful. You might use up important funds for a down payment doing a move like this. If your realtor is falling short, don't hesitate to find another so you can get access to the right kind of homes, in the right price range, as soon as they come on the market. Are you preapproved for your loan? That makes things go much smoother and quicker- less chance of the deal falling through on your end.