Thanks Admin,
Wise advice indeed! I've already called around for professional snagging quotes, visited the area last week (without EA) to speak to the prospective neighbours. The properties were completed last year and they didn't have any big issues (neighbours reported the occasional settlement crack, but the developers promptly patched this upon request).
We have been renting for the last 4 years, mostly in new builds and are familiar with some of the shocking issues - ranging from flimsy / badly fitted front doors (which results in mould in the hallway / daily slug infestations), broken windows to just plain poor design - storage heating that didn't really work. On the other hand, we've had some good rentals well where we didnt really have big issues.
We did a fair bit of googling before putting in the offer and are going into this adventure with eyes wide open!