Well, I have several friends who live in the area running down to Addenbrookes (everything between Cherry Hinton Road, Hills Road and Queen Edith Way, basically). Houses are generally large semis and detached. Gardens range in size from typical narrow suburban garden (15-25' x 60-120') up to half an acre: you are likely to get a bigger, better garden as you move further away from the town centre towards the hospital. One of my friends even has a view of a hill from her bedroom window (and that's a big deal round these parts, I can tell you!)
So with my Kirsty hat on, here's some examples:
This is classic 1920's Queen Edith's Way house - garden of about 1/4 acre
Here's another although with a smaller garden from the looks of it.
Another right on the edge of town by Addenbrookes
And here's one that won't be suitable I suspect (not enough garden) but will give you a feel for the typical style of house if you live closer in to town in this area. This is about 10 minutes bike ride from station.
Finally, this is not in the area we are talking about but another attractive road on the west side of the city which is probably a 15 minute bike commute to the station and easily a sub 20K commute to Waterbeach. Biggish garden and house.