Estate Agent Intelligence
NI Rank
#91of 196
Median days
90days
Listings analysed
90
Strongest in £400k – £600k properties
46 days faster than the segment median
Based on data from April 2026 – October 2026 · independently observed by ClearKey
This page summarises independently observed market activity for Simon Brien (South Belfast). Based on ClearKey's analysis of 90 qualifying transactions in April 2026 – October 2026, Simon Brien (South Belfast)'s listed properties moved from listing to sale agreed in a median of 90 days. This is 4 days faster than the Northern Ireland median of 94 days across all qualifying agents for the same period. Simon Brien (South Belfast) ranks 91 of 196 agents with sufficient qualifying transactions to appear in ClearKey's dataset.
Simon Brien (South Belfast)'s strongest measurable performance is in £400k – £600k properties and BT3 area — where their median selling time is notably ahead of the segment benchmark. Within the dataset, Simon Brien (South Belfast) ranks fastest in the BT1, BT3 postcode districts.
Speed to sale agreed is one indicator of performance, not a comprehensive measure of service quality. It does not capture price achieved relative to asking price, fall-through rates, or quality of buyer qualification. Compared with October 2025 – April 2026, Simon Brien (South Belfast)'s median improved by 105 days.
105 days faster than the previous period
April 2026 – October 2026: 90d median · October 2025 – April 2026: 195d median
NI median moved from 204d to 94d
Median days
90d
Primary metric
Average days
95d
Mean
Transactions
90
1.3% market share
NI rank
#91
of 196 agents
Speed comparison
Segments where this agent performs measurably faster than the relevant benchmark. Only statistically meaningful strengths are shown.
£400k – £600k properties
Median 63d · 46 days faster than segment median (109d) · #1 in segment
BT3 area
Median 77d · 45 days faster than segment median (122d) · #1 in segment
BT9 area
Median 97d · 10 days faster than segment median (107d) · #2 in segment
Strengths are identified automatically from ClearKey's dataset. They reflect measured speed relative to comparable transactions — not a subjective assessment of service quality.
Postcode districts covered
★ Indicates district where this agent ranks #1 for speed
Apartment / Flat
High109days
Detached
High87days
Semi-detached
Medium100days
Terraced
Medium79days
£150k – £250k
High79days
£250k – £400k
High137days
£400k – £600k
Medium63days
BT1
Limited_evidence79days
BT3
Limited_evidence77days
BT9
High97days
Observations generated from ClearKey's dataset. All statements are derived from measured data — no subjective assessments.
Selling time broadly in line with the Northern Ireland average
This agent's median of 90 days places them close to the Northern Ireland median of 94 days. This suggests performance consistent with typical market conditions during this period.
Strongest performance in £400k – £600k properties
Within the £400k – £600k properties segment, this agent recorded a median of 63 days — 46 days faster than the segment's overall median of 109 days. This places them in the top performers for this property type.
Fastest agent in the BT3 area
In the BT3 postcode district, this agent ranked first with a median of 77 days — 45 days faster than the local median of 122 days.
Selling times improved compared with the previous period
This agent's median dropped from 195 days in October 2025 – April 2026 to 90 days in April 2026 – October 2026 — an improvement of 105 days. The Northern Ireland market median moved from 204 to 94 days over the same period.
Wide variation in selling times — 57 to 139 days for the middle 50%
The middle 50% of this agent's listings sold in 57 to 139 days — a spread of 82 days. This breadth suggests the agent handles a diverse portfolio where individual property characteristics have a significant effect on how long each takes to sell.
Terraced sold 30 days faster than Apartment / Flat on average
This agent's Terraced listings reached sale agreed in a median of 79 days, compared with 109 days for Apartment / Flat. Property type has a meaningful effect on how quickly this agent's listings sell.
Ranking supported by a substantial transaction sample
With 90 qualifying transactions in this period, this agent's ranking is in the high-confidence bracket. A larger dataset makes the median more robust to individual outliers.
Days on market is calculated from the property's listing date to the date it moved to sale-agreed or likely-sold status — not to legal completion.
Median is used as the primary ranking metric rather than average — it is more robust when individual portfolios contain outlier properties that take unusually long to sell.
Only agents with a minimum of 10 qualifying sale-agreed transactions in the analysis period appear in the main ranking. Segmented breakdowns (property type, price band, region) use an adaptive minimum between 3 and 10 transactions, scaled to the total activity in that segment — this prevents niche segments from showing almost no ranked agents.
Properties with a days-on-market figure exceeding 1,095 days (3 years) are excluded as likely data anomalies.
All data derived from ClearKey's verified Northern Ireland property listings database. Rankings are computed independently and cannot be influenced by estate agents.
Speed is not the same as price achieved. This page measures how quickly listed properties moved to sale agreed — not whether they achieved asking price, above, or below.
Area effects. Agents operating in postcodes with naturally faster market velocity will tend to rank higher regardless of individual firm performance.
Property mix. Agents handling premium, rural, or specialist stock that takes structurally longer to sell may rank lower without any reflection on service quality or client outcomes.
Name fragmentation. The same firm may appear under slightly different name variants in listing data, which can split their transaction count and affect ranking.
View the full NI ranking and compare Simon Brien (South Belfast)side-by-side with other agents in ClearKey's Estate Agent Speed reports.
Data covers April 2026 – October 2026 · Published by ClearKey · Independently observed