Heol-ddu is small terraces and semis packed tightly together, the kind of density you feel walking down the street before you see a single number confirming it — a place built for people, not for cars, with just one recognised transport stop serving the whole area. The housing here tells its own story: modest semi-detached homes on freehold titles, a median sale price of around £140,000 against a Welsh average closer to £208,000, which puts Heol-ddu firmly among the more affordable corners of the country. That affordability comes with a context worth sitting with — this is an area ranked in the most deprived tenth of Wales on both income and general deprivation, a statistic that sits oddly alongside the area's own "B" grades for housing, connectivity and environment. That's the quiet tension here: comfortable, decent-quality streets and full-fibre broadband reaching four in five homes, in a place that shows up at the bottom of the national deprivation tables. Schools are limited to the two named community primaries, Clase Primary School and Y.G.G. Tirdeunau, both around the same size; there's no secondary named in the picture, so families here are likely looking further afield once children reach that age. Crime is the sharper edge of the story. Violence and sexual offences account for over half of all recorded incidents, and the area's crime rate runs many times higher than the Swansea average — a genuine outlier against a city that itself isn't especially low-crime. Public order offences and anti-social behaviour make up most of the rest, which paints a picture of a place where trouble is more about disorder on the street than break-ins or car theft; burglary and vehicle crime barely register by comparison. The overall safety grade sits at a middling "B", which undersells how concentrated that violent-crime share actually is — it's the one figure in this piece that doesn't match the tone of everything else. Day-to-day, there isn't much data here to sketch a weekend rhythm — no named park, restaurant, or health centre in the picture, and with population sitting at just 350 people, this reads more like a tight residential pocket than a place with its own high street to wander. What you can say is that it attracts a working-age crowd, median age a shade over 36, younger than the Welsh average of 43, likely reflecting cheaper entry prices pulling in people early in their working lives rather than retirees. This suits someone who wants affordable freehold housing and doesn't mind a dense, close-knit street layout — but the crime picture, and the concentration of deprivation, are the pieces to sit with honestly before deciding this is home.