Houses for Sale in Castleknock: 2025 Guide to Prices & Agents

There’s a moment in every house hunt when you realise the right property isn’t just about the number of bedrooms — it’s about knowing exactly where to look and who to trust. Castleknock, Dublin 15, offers a market as varied as its Georgian architecture and modern family estates, with asking prices ranging from €330,000 to €2.5 million (MyHome.ie).

Properties for sale (daft.ie): 123 ·
Median price (myhome.ie): €535,000 ·
Price range (myhome.ie): €330,000 – €2,500,000 ·
Recently added (myhome.ie): 115 ·
Major estate agents: Sherry FitzGerald, Ray Cooke

Five key figures from the Castleknock housing market, all drawn from live listing data:

What types of houses are for sale in Castleknock?

Castleknock’s property mix spans from Georgian-era detached homes to modern townhouses. The range means buyers at different price points can find something, but the choice can feel overwhelming without a clear breakdown.

Detached houses in Castleknock

• Detached homes often sit on larger plots. Castleknock House, a protected structure, is a five-bay two-storey house built circa 1840 (Buildings of Ireland).
• Prices for detached properties tend to exceed the median, with some listings above €1 million (Sherry FitzGerald Castleknock listings).

Semi-detached houses in Castleknock

• Semi-detached three- and four-bed homes are common in estates like Castleknock and Laurel Lodge, popular among families (Homerating.ie).
• These typically fall within the €400,000–€700,000 bracket.

Terraced houses in Castleknock

• Terraced houses appear mainly in older developments closer to the village centre.
• They offer a more affordable entry point, often below €500,000.

Townhouses in Castleknock

• Newer townhouse developments can be found in areas like Carpenterstown (Homerating.ie).
• Typical townhouse prices range from €350,000 to €600,000.

The pattern: Property type drives price more than location within Castleknock. Buyers who prioritise a detached house should budget well above the median.

How much does a house cost in Castleknock?

Castleknock’s price spectrum is wide enough to include both first-time buyers and premium purchasers. The median gives a useful anchor, but the extremes tell the real story.

Median price for a Castleknock house

• The median asking price across all Castleknock listings is €535,000 (MyHome.ie).

Price range for Castleknock houses

• Prices span from €330,000 (entry-level terraced or small townhouse) to €2,500,000 (luxury detached) (MyHome.ie).
• Rightmove also indexes Castleknock properties, giving international buyers visibility (Rightmove).

Affordable options in Castleknock

• Properties under €400,000 exist but are rare – usually smaller terraced homes or apartments.
• Using price filters on MyHome.ie and Daft.ie helps narrow the search.

Why this matters: The wide price range means a buyer can spend anywhere from €330,000 to €2.5 million in the same postcode. Knowing where you sit in that spectrum saves weeks of wasted viewings.

Which estate agents sell houses in Castleknock?

Several agencies compete for Castleknock listings, each with a slightly different focus. Choosing the right agent can mean seeing the best properties before they’re publicly advertised.

Sherry FitzGerald Castleknock branch

• Sherry FitzGerald describes itself as Ireland’s largest estate agency (Sherry FitzGerald).
• Their Castleknock branch specialises in second-hand residential sales and lists properties such as a four-bed house at €995,000 (Sherry FitzGerald Castleknock listings).

Ray Cooke Castleknock listings

• Ray Cooke is another long-standing agent active in the area, listing multiple property types.
• Their online presence is visible on both Daft.ie and MyHome.ie.

Other agents active in Castleknock

• Flynn & Associates has a Castleknock branch listed on MyHome.ie (MyHome.ie estate agents).
• Newcombe Estates covers Dublin 15 and references Castleknock in its market area (Newcombe Estates).
• DfM presents itself as a boutique estate agency serving Castleknock (DfM).

Five agents, one comparison: who suits your search?

The implication: Register with at least two agents – one large (Sherry FitzGerald) and one boutique (DfM or Newcombe) – to maximise coverage without being locked into one agency’s inventory.

Are there cheap detached houses for sale in Castleknock?

“Cheap” is relative in the Dublin 15 market, but detached houses under €500,000 exist only sporadically. Here’s how to find them.

Defining ‘cheap’ in Castleknock market

• With a median price of €535,000, anything below €400,000 is notably cheap for the area.
• Detached houses at the lower end of the range are rare – most detached listings top €700,000.

Comparing detached house prices

• The price range for detached houses can extend to €2.5 million, as seen on MyHome.ie.
• International platforms like Le Figaro Properties also list luxury detached homes in Castleknock, reinforcing the premium skew.

Tips for finding budget-friendly homes

• Set a max price filter of €450,000 on Daft.ie and MyHome.ie.
• Check for newly reduced properties – sellers sometimes cut prices after a slow period.
• Consider semi-detached or townhouse alternatives; they offer similar space for less money.

What this means: Buyers who insist on a detached house below €500,000 in Castleknock are chasing a very slim market. Flexibility on house type dramatically increases affordable options.

How many houses are currently for sale in Castleknock?

Inventory levels give a sense of competition. Castleknock’s current stock suggests a reasonably active market with decent choice.

Current inventory on daft.ie

• Daft.ie lists 123 properties for sale in Castleknock as of the latest crawl (Daft.ie Castleknock).

Recently added listings on myhome.ie

• MyHome.ie shows 115 recently added listings, indicating a steady flow of new properties (MyHome.ie recent listings).

For buyers, the implication is clear: new stock appears regularly, so checking portals every few days is worthwhile.

Why this matters: With over 100 live listings and a steady stream of new entries, Castleknock offers genuine choice. The risk is not a lack of options, but missing the one that fits while waiting.

What’s confirmed — and what’s not

The gaps in published data mean that buyers should combine online search with direct agent conversations.

What estate agents say about Castleknock

“Sherry FitzGerald is Ireland’s largest estate agency.”

— Sherry FitzGerald Castleknock branch

“We are a boutique estate agency serving Castleknock.”

— DfM estate agency

“Newcombe Estates covers Dublin 15 including Castleknock.”

— Newcombe Estates

How to find a house for sale in Castleknock — step by step

1. Set your budget – Know your mortgage approval and stamp duty costs. Use the median of €535,000 as a benchmark.
2. Search listings daily – Bookmark MyHome.ie and Daft.ie for Castleknock. Set alerts.
3. Contact multiple agents – Register with Sherry FitzGerald, Ray Cooke, and a boutique agency like DfM.
4. Attend viewings with questions – Ask about BER ratings (Homerating.ie), property age, and planned developments.
5. Compare sold prices – Use Daft.ie sold-properties to see what similar homes actually sold for.
6. Make an offer – Be prepared to move quickly on desirable properties; market turnover is brisk.

Castleknock’s housing market is varied enough to suit both first-time buyers and luxury purchasers, but it demands active, informed searching. For the buyer looking at a semi-detached family home around the €500,000 mark, the choice is clear: register with Sherry FitzGerald for volume and with DfM for personal attention, check MyHome.ie and Daft.ie daily, and be ready to view within 48 hours – or watch the right house go to someone else.

For those exploring the Dublin 15 area, a similar guide to houses for sale in Lucan offers comparable insights into prices and estate agents.

Frequently asked questions

Related reading: Castleknock estate agents guide · Castleknock property prices and market overview