21 Blackthorn Grove, Dublin 16, Dundrum, Dublin 16, D16 E654
88 homes sold nearby. See what they went for — and what to bid on this one.
€500,000 · 3 Bed · 1 Bath · 88m² · Semi-D
Market Position
Below Typical Sale Prices
At €500,000, this home is priced below what similar properties sold for in the area. That's a favourable starting position — but consider a structural survey before committing.
88 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 €500,000, 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 €25,000 before interest.
Analysing 625,000+ Property Price Register transactions since 2010.
What your report includes
Before You Bid
Before you bid €500,000, 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.
€25,000
That's what overbidding by just 5% on a €500,000 home costs you — before interest.
A €19 check before a €500,000 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 88 verified local sales · High confidence
Instant access · No subscription · Refund if not useful
From €19 for your strategy on a €500,000 home. Independent valuations start at €150 — same data source, fraction of the cost.
Price Distribution Analysis
88 verified closed sales within 1.5km · 18 months. Size-adjusted for similar homes (type match, beds ±1, size ±20%).
Asking price is positioned below the size-adjusted median, suggesting favourable entry conditions. 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 4.4% year-on-year, based on the trailing 18-month transaction window.
Indicates sustained upward pricing pressure in the local market.
Recent closed sales are time-adjusted to current market conditions before calculating transaction bands.
Statistical Confidence · High
88
Transactions Analysed
Within 1.5km
11 months
Data Freshness
Most recent sale age
±13%
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 · 88 Transactions
Size and time adjustments applied before percentile computation.
| Address | Sold | Date | Size |
|---|---|---|---|
| 20 Blackthorn Court, Sandyford, Dublin 16, Dublin 16, Dublin | 2025-11-06 | 115m² | |
| 15 Blackthorn Court, Sandyford, Dublin 16, Dublin 16, Dublin | 2024-12-03 | 105m² |
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 Improvement Opportunity: Upgrading the D2 BER rating to a B2 would likely cost €8,000-€12,000 but could increase the property value by €15,000-€20,000, representing a sound investment.
Details
- Compact Living Space: At 88m², this property is smaller than the average property size of 114m² sold within a 1km radius over the past 180 days, suggesting a more compact living arrangement.
- Standard Bathroom Count: With only one bathroom, this property is below the median of 2 bathrooms sold within a 1km radius over the past 180 days, which could be a constraint for larger families or guests.
- Hypothesis: Given that all properties within a 1km radius have an unknown BER rating, and this property has a D2 rating, there's a significant opportunity to differentiate and enhance value by undertaking a comprehensive BER upgrade, potentially unlocking a value uplift of 3-4% over the current asking price, assuming a €15,000-€20,000 investment.
Amenities
Extensive Bus Connectivity: Residents have access to Dublin Bus routes 17, 49, and 54A which serve the Dublin 16 area, facilitating convenient travel across the city.
Details
- Close to Essential Services: Proximity to the Nutgrove Shopping Centre, offering a wide array of retail outlets including Dunnes Stores and Boots, along with local pharmacies and health clinics, enhances daily convenience.
- Local Educational Hub: The area is well-served by primary and secondary schools such as Ballinteer Educate Together National School and St. Benildus College, making it an attractive location for families.
- Hypothesis: The presence of multiple bus routes and proximity to shopping centres suggest a well-established residential area; however, the absence of any Luas or DART access within immediate proximity (within 1km) means that properties with similar amenities but direct rail links (e.g., within 3km radius where average asking prices are significantly higher) may experience stronger future capital appreciation due to enhanced commuter options.
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 CFRAM flood extent mapping and historical flood events. Planning activity is sourced from national planning application records via MyPlan.ie. No asking prices, no agent estimates, no automated valuations.