21 Fairhaven Close, Fairhaven, Castleknock, Dublin 15, D15 K2WT
25 homes sold nearby. See what they went for — and what to bid on this one.
€995,000 · 4 Bed · 4 Bath · 180m² · Semi-D
Market Position
At the Upper End of Local Sales
At €995,000, this home is priced above what similar properties sold for — buyers at this level tend to overpay without a defined ceiling.
25 closed sales nearby · 11mo recency · High confidence · Property Price Register
Sources: PPR, SEAI, OPW, planning records.
How this is calculated
We search the Property Price Register for closed sales near this property — matching by location, beds, property type, and where available, floor area (±20%). This gives us a set of genuinely comparable transactions.
Each sale is then time-adjusted to today using local price trends, so a sale from 18 months ago is inflated (or deflated) to reflect current market conditions. Where floor area is known, sales are also size-adjusted — a 90m² sale is normalised to what it would have sold for at this property's size. This means the figures you see aren't raw prices — they're what those same homes would likely sell for today, at this size.
Your bid strategy (opening offer, sealed bid range, walk-away ceiling) is then derived from the statistical distribution of these adjusted sales — with conservative safety margins applied when data is thin or dated.
Every figure comes from actual government-recorded sale prices. No asking prices, no agent estimates, no automated valuations.
Full methodology →Opening
Start here
Best & Final
If multiple offers
Ceiling
Do not exceed
Before you bid €995,000, get your opening offer, best-and-final range, and walk-away ceiling.
Instant access · No subscription · Refund if not useful
Overbidding by 5% could cost €49,750 before interest.
Analysing 625,000+ Property Price Register transactions since 2010.
What your report includes
Before You Bid
Before you bid €995,000, see this.
Here is what the data says about this property.
Will This Go Over Asking?
above asking
Probability of a sale above asking based on local bidding patterns.
Am I Overpaying?
local sales
Where the asking price sits in the verified local transaction distribution.
Negotiation Leverage Score
How much negotiation leverage you have based on market conditions.
These signals interact — full analysis in report.
€49,750
That's what overbidding by just 5% on a €995,000 home costs you — before interest.
A €19 check before a €995,000 commitment.
Get Your Exact Bid Numbers for This Property
You've seen the market signals. Now get the exact numbers: where to open, how far to go, and when to walk away.
Built from 625,000+ verified Irish property transactions
Based on 25 verified local sales · High confidence
Instant access · No subscription · Refund if not useful
Price Distribution Analysis
25 verified closed sales within 1.5km · 18 months. Size-adjusted for similar homes (type match, beds ±1, size ±20%).
Asking price is positioned above the median of comparable sales. This places the property outside the core transaction band where most comparable homes closed. Median anchored to size-similar transactions.
This chart shows where the asking price sits versus recent verified closed sales. It does not show your bid strategy.Same baseline as Market Position — size-adjusted.
The chart shows the market. Your report gives the number not to exceed.
Instant access · No subscription · Refund if not useful
Local Market Momentum
Unlock to adjust radius, timespan, and comparison window.
Radius: 1.5kmTime: 18m12m vs 12mMedian transaction price per m² has increased 0.6% year-on-year, based on the trailing 18-month transaction window.
Local pricing conditions remain stable. No significant directional pressure.
Recent closed sales are time-adjusted to current market conditions before calculating transaction bands.
Statistical Confidence · High
25
Transactions Analysed
Within 1.5km
11 months
Data Freshness
Most recent sale age
±11%
Price Spread
How much prices vary
High
Confidence Level
Recent sale prices in this area are closely clustered, which means the data is reliable and the bid strategy is well-supported.
High data density supports precise entry positioning.
PPR closed sales · size & time adjusted · no asking prices used
Supporting Evidence · 25 Transactions
Size and time adjustments applied before percentile computation.
| Address | Sold | Date | Size |
|---|---|---|---|
| 8 Fairhaven Close, Castleknock Road, Catelknock, Dublin | 2025-10-23 | — | |
| 45 Fairhaven Avenue, Castleknock, Dublin 15, Dublin 15, Dublin | 2025-09-05 | 101m² |
Transactions within a 1.5km radius and 18-month window.
Methodology
Closed sales time-adjusted to current market · size-weighted where floor area available · no asking prices or agent estimates used.
How adjustments work
- —Older sales inflated to current market level so stale data doesn't skew bands
- —Similar-sized properties weighted more heavily where floor area is known
- —Local price trends factored in when sufficient data exists; no artificial uplift otherwise
- —All figures from registered closed sales only — no asking prices, no agent estimates
Local Market Notes
Property Quality
BER Efficiency: The A BER rating suggests significantly lower annual energy costs, likely in the range of €800-€1,200, compared to €1,800-€2,200 for comparable D-rated properties of similar size in the area.
Space Proposition: At 180m², this 4-bedroom, 4-bathroom semi-detached house offers substantial living space, which is attractive in a market where larger family homes are in demand.
Value Optimization: While not explicitly detailed, the A BER rating suggests a high standard of build and insulation, which typically reduces the need for immediate costly upgrades and enhances long-term value retention, unlike properties requiring BER upgrades from D to B2 which can cost €8,000-€12,000 but add €15,000-€20,000 in value.
Hypothesis: The A BER rating on a 180m² property in this location, especially when compared to the typical BER ratings of the 9 properties of the same broad type sold within 1km (which would likely not all be A-rated), represents a significant selling point that could justify a premium of up to 10-15% over similarly sized properties with average BER ratings (C/D).
Amenities
Transport Links: While specific routes aren't listed for Fairhaven Close, Castleknock generally benefits from Dublin Bus routes like the 38, 38A, 38B, 38D serving nearby areas, and is a short drive to train stations at Coolmine or Castleknock for easy access to the city centre.
Local Conveniences: The area offers access to local shopping centres such as Roselawn Shopping Centre and a variety of local cafes and restaurants in Castleknock Village, catering to daily needs and leisure.
Educational Access: Castleknock is well-served by a range of reputable schools, including primary schools like St. Brigid's National School and secondary schools like Castleknock Community College, making it a desirable location for families.
Hypothesis: Given the strong presence of established primary and secondary schools and the proximity to essential services, combined with improved transport links that may emerge from ongoing infrastructure development plans for Dublin 15, properties in this segment of Castleknock are likely to see sustained demand and value appreciation, particularly appealing to families seeking both quality education and family-friendly living environments.
Derived from nearby closed-sale patterns.
Built on verified Irish public data
Property Price Register
625,000+ verified closed sales
SEAI
Building energy ratings & floor area
Office of Public Works
Flood zones, events & study areas
MyPlan.ie
Planning applications nationwide
Common Questions
Bid strategy figures are derived from the Property Price Register — Ireland's official record of closed residential sale prices, verified through stamp duty. Floor area data comes from the SEAI BER register. Flood exposure is cross-referenced against OPW flood extent mapping (CFRAM fluvial + NCFHM coastal) and historical flood events. Planning activity is sourced from the National Planning Application Database via MyPlan.ie — merged Local Authority planning registers from the Department of Housing. No asking prices, no agent estimates, no automated valuations.