a) new build semi, 2 ensuites, 3 floors, lovely street, reception room plus kitchen/family room, lovely development of only a few houses off a lovely road, small but flat garden, drive and garage at sidemove straight in and unpack......
b) 1970's detached, kitchen, dining room and large lounge, downstairs shower room and upstairs bathroom, tiered garden, drive and garage at back, nice street and walking distance to school (just), needs everything doing inside and out (which we would have to do mostly ourselves)......
The new house you linked to looks fairly small for 4 primary school children.
We have done our house up (1920's 5 bed 3 reception rooms) slowly over the past 7 years. We made it livable in the first 6 months and then have tackled a room at a time every 6 months or so. We finished our kitchen in December and are gearing up for the last room (DS2) soon. Its not been too bad at all.
Check the internal aspect with 4 children. We have lived in 2 new builds and can hear everything in all the rooms.
We also have 3 floors and dd can be in the lounge on the ground floor and call up to me on the top floor, and I can hear her with all the doors shut. the walls and floors have no sound insulation at all.
Viewed the 1930s and it was lots of tiny room and needs fair bit of work. 1970s detached it is!! Feel much better having explored all the options and really thought about the downside of small living space with 4 children! Phew will sleep better now decision has been made. Thanks for your thoughts.