3Y Avg Price
£366,250
2 sales
Properties
14
Sales / Year
0.8
5-year average
Avg £/sq ft
£529
£5,690/m²
Rank in SG17
118th
of 177 streets
Last Sale
£382,500
Jul 2026
Price History
Every recorded sale on this street, coloured by property type.
Last 10 Sales
28 total recorded
14 Sullivan Close
Detached
£382,500
Jul 2026
14 Sullivan Close
Detached
£350,000
Apr 2024
15 Sullivan Close
Detached
£470,000
Oct 2022
16 Sullivan Close
Detached
£525,000
Jul 2022
7 Sullivan Close
Detached
£405,000
Mar 2020
11 Sullivan Close
Detached
£392,500
Feb 2018
9 Sullivan Close
Detached
£385,000
Feb 2016
9 Sullivan Close
Detached
£285,000
Jun 2015
11 Sullivan Close
Detached
£277,000
Dec 2013
18 Sullivan Close
Detached
£250,000
Mar 2013
Street Rankings — SG17
Streets ranked by 3-year average sale price. Showing positions 113–123 of 177.
| # | Street | 3Y Avg |
|---|---|---|
| 113 | Greenway | £380,000 |
| 115 | High Street | £376,135 |
| 116 | Mill Lane | £370,000 |
| 117 | Hoover Place | £368,583 |
| 118 | Sullivan Close | £366,250 |
| 118 | Sullivan Close | £366,250 |
| 120 | Bridge View | £365,800 |
| 121 | George Street | £365,000 |
| 121 | Banland Croft | £365,000 |
| 123 | Rookery Walk | £363,000 |
Property Mix
Type
Tenure
EPC Ratings
11 of 14 properties have an EPC record
Avg floor area: 947 sq ft (88 m²)
District Context — SG17
SG17 covers Letchworth Garden City and surrounding areas in north Hertfordshire, positioned between Cambridge and London. It is a planned residential community with strong family appeal, characterized by spacious properties and established green spaces.
Average Property Price - SG17
£407,061
70
National percentile
12 month avg at 31 Jul 2026
Average Net Household Income - SG17
£49,031
86
National percentile
2023 census data
10-Year Annualised Price Growth - SG17
2.6%
35
National percentile
Estimate at 31 Jul 2026
10-Year Annualised Rent Growth - SG
4.3%
74
National percentile
Estimate at 31 Jul 2026