You and your husband should drill down into why having a family home, particularly by a particular deadline/milestone, matters so much to him (and possibly you). As someone who grew up in rental apartments, I find the "you must have a house to raise kids" attitude to be mostly marketing. Before age 8 or so, the housing situation I was in was what was "normal", after that I wanted my own room sometimes, or to have non-white walls. I'm not saying it's not nice to have a family home, or that I didn't dream of it in middle/high school, but it wasn't an option for us and I turned out just fine. The important part, I think, is the stability of knowing you will have a roof over your head, not how it's achieved (through homeownership or savings in the bank). Furthermore, neither I not my 2 sisters experienced any significant effects from moves before we were ~10yo. As long as we were with family, things were fine. (Older than 10, missing friends and changing schools became more of an issue...still totally survivable though!!)
PS for those worried about the walls...I don't think I've ever, as a child or adult, started off in an apartment that wasn't freshly repainted...
And my second thought, at 29 I'm not hitting any of those yet due to getting stuck in grad school and still working my way out. You're doing just fine, keep chugging along!! :)
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