Terraced streets, tight and close-packed, with a density that feels more inner-city than suburb — Thornhill's population is squeezed into a footprint that runs at more than double the national average crowding, and the housing stock tells the same story: rows of two-up two-downs rather than anything detached or new-built. The numbers around income and deprivation put this at the very bottom of the national scale, which shapes almost everything else here. House prices sit below both the national and regional medians, and are close to flat on the year, so this isn't a market anyone's pricing in hope for. A typical sale is a freehold terrace going for around a quarter of what you'd need in the wider South East for the same type of home — genuinely one of the more affordable corners of the region, and the affordability grade agrees with that. But flats are the outlier worth noting: they're changing hands for roughly half the national median for a flat, which suggests a two-tier local market where houses hold value and flats don't. Connectivity is solid, with full fibre reaching the vast majority of homes, and the transport grade is respectable even without a rail station named for the immediate area. Schools are the soft spot. There's just one school captured for the area itself, Thornhill Primary, rated Requires Improvement — not a name that reassures a family scanning options, and it drags the overall schools grade down even though nearby Kanes Hill and Hightown primaries carry Good ratings. If schooling is your priority, this is the detail to sit with rather than skip past. Safety is the sentence that needs saying plainly: crime here runs more than three times the rate of the wider Southampton authority, with violence and sexual offences alone accounting for nearly half of all recorded incidents, followed by anti-social behaviour and criminal damage. The safety grade of B feels generous against that backdrop, though the trend is flat rather than worsening — this is a settled pattern, not a place sliding downhill, but it is a pattern that predates any one bad year. Green space is thin too, a handful of small plots rather than anything to build a weekend around, and health outcomes sit a category below what you'd hope for. Put together, Thornhill reads as a place for someone who needs affordability above almost everything else and is prepared to look past a difficult crime picture and a weak local school to get it. Young households and renters drawn by the price point and decent broadband will find a workable base here; anyone prioritising schools, quiet streets, or green space will want to look at what sits just beyond it first.