Dublin’s Hidden Price Map: The €670K Gap Between Neighbouring Areas (2025)

The south side of Dublin has the most extreme price borders in the country. All five of the biggest gaps are south of the Liffey.

Dalkey (€1,115,000) vs Ballybrack (€445,264) — the single biggest gap in Dublin at €669,736. Dalkey has a DART station, a seaside village centre, and a reputation as one of Ireland's most exclusive addresses. Ballybrack is just up the hill with no rail stop and none of the cachet. The premium has nothing to do with bricks and mortar.

Foxrock (€930,000) vs Sandyford (€463,500) is separated by the M50 and a €466,500 premium. Sandyford has the Luas, a growing tech campus, and apartment density. Foxrock has detached houses, bigger gardens, and a postcode that signals wealth.

Rathfarnham (€680,000) vs Tallaght (€360,000) is the gap everyone in Dublin already knows about. Three kilometres apart. €320,000 difference. Tallaght has the Luas Red Line, a university hospital, and a TU Dublin campus. Rathfarnham has the address. Yet the Rathfarnham median is nearly double.

Terenure (€713,000) vs Crumlin (€445,000) — €268,000 between areas that share Sundrive Road. The schools overlap. The shops overlap. The price doesn't.

The northside gaps are smaller in absolute terms but arguably more consequential — because they sit closer to the first-time-buyer price range.

Glasnevin (€570,000) vs Finglas (€330,000) is a €240,000 gap across the Finglas Road. Glasnevin has the Botanic Gardens and a solid reputation. Finglas has better value per square metre and more three-bed semis for under €350,000. The gap is widening — Finglas grew 17.9% year-on-year, but it's growing from a much lower base.

Malahide (€685,000) vs Swords (€420,000) is the coastal premium in action. Swords has better transport links (the Metro is coming), more shopping, more density. But Malahide has the estuary, the village, and the school catchments. That's worth €265,000 to the market.

Skerries (€550,000) vs Balbriggan (€320,000) is the same story repeated further north. Same Northern Commuter rail line, similar commute, same coast. One is a “destination town” with a harbour and craft shops. The other is the most affordable large area in Dublin. The €230,000 gap is the price of perception.

If you're buying: The “wrong side” of these price borders is where the value is. Finglas gives you 73% more house per euro than Glasnevin. Tallaght gives you nearly double compared to Rathfarnham. If your priority is space, not address, cross the line.

If you're investing: The cheaper side of these pairs tends to grow faster in percentage terms. Finglas rose 17.9% year-on-year vs Glasnevin's 11.8%. Crumlin rose 9.9% vs Terenure's 4.6%. But the expensive side still gains more in euro terms — same pattern we see nationally.

The uncomfortable truth: Dublin's price borders are not about quality of life. They're about reputation, school catchments, and the compounding effect of decades of unequal investment. A €320,000 gap between Rathfarnham and Tallaght isn't justified by amenities. It's justified by the fact that other buyers also believe it's worth €320,000 more. That's how property markets work — and it's why these gaps persist.