Don't assume anything. Visiting regularly means better workmanship. You'd be amazed the the corners they will cut.
I've seen new houses with windows that were permanently dark, chimney breast in main bedroom where the bed was supposed to go, rooms so tight you could not open the wardrobe, stairs that defy gravity and are impossible to get furniture up, windows not fitted properly, ditto doors and architraves, radiators in the worst position in a room, bathroom downstairs large enough door for a wheel chair but the hall with a radiator impossible for a wheelchair to pass. No utility room meaning the washing machine has to go in the kitchen. Cheap fitted wardrobes. Not enough worksurface in a kitchen, a common mistake. Badly laid out kitchen.
Agree that many sockets are important, as are a back door and front door light and I also have an outside socket, not sure if that's allowed in Ireland. Great for the hedge trimmer. Also have an outdoor tap. Make sure you have enough parking space, I've seen many estates where the cars are on the footpaths, grass, wrong place and everybody fighting over it.
Green area for kids is important. Trees also important.
Light and aspect also to think about.