Not exactly the same situation, but we recently seeded a lawn after renovating. The garden had been overgrown for over 10yrs, then 2yrs of renovations with all manner of brick off cuts, ciggarette butts and rubbish being left behind. We had the ground scraped of the rubble/crap, then added about 30cm of top soil. New builds commonly have very shallow, poor soil, potentially with rubble and debris underneath. It really depends if this is the case, or whether you do have a good depth of soil?
I read about rolls vs seeding and whether additional manure/nutrients are required. We were advised we didn't need manure, because the top soil we'd added was sufficient.
We decided to seed. We have a large garden, and rolls might have dried out before we could have laid them all, plus, I'd read that seeding knits together better and doesn't leave lines.
As a side note, I bought rolls of holographic paper ribbon, which I attached to cane poles in an attempt to stop the pigeons eating the seed. Add extra seed- because they WILL eat some! Oh, and they aren't phased by holographic strips flapping about!