223 properties · Grey Lynn, Auckland

Williamson Avenue, Grey Lynn

Williamson Avenue in Grey Lynn has 223 properties, valued by the council between $550,000 and $97,500,000 with a median of $1,950,000 (Grey Lynn: $1,650,000). More of its homes were built in the 2020s than in any other decade. We estimate its homes at a median $1,710,000. 6 sold in the last twelve months, for a median $2,075,000. The highest sale in 2026 was 502/20 Williamson Avenue, at $3,450,000. 1 is for sale now.

$1.95mmedian council valuation
$1.71mour median estimate
$2.08mmedian sale, last 12 months · 6 sales
1990median year built
1for sale now
AucklandGrey Lynn ×Williamson Avenue ×

239 properties on Williamson Avenue, Grey Lynn

Highest and lowest on Williamson Avenue

Highest-valued home801/20 Williamson Avenue$9,100,000council valuation · 288 m² floor
Lowest-valued homeG01/20 Williamson Avenue$550,000council valuation
Highest sale in 2026502/20 Williamson Avenue$3,450,000sold 27 Apr 2026 · 165 m² floor

Property values on Williamson Avenue

The council values Williamson Avenue's 205 rated properties between $550,000 and $97,500,000. The middle half sit between about $926,000 and $2,377,500; the median is $1,950,000 and the mean $2,409,220.

Lowest: $550k$550kLowest10%: $820k20%: $860k20%30%: $992k40%: $1.07m40%Median: $1.95m60%: $2.17m60%70%: $2.27m80%: $2.48m80%90%: $2.71mHighest: $97.5m$97.5mHighest
BedroomsHomesMedian council valueSold, last 12 monthsMedian sale
15$2.27m0—
212$1.27m0—
355$2.23m3$2.3m
423$2.35m0—
5+4$2.67m0—

Council rating valuations: the council's figure for apportioning rates, not a market appraisal.

Williamson Avenue compared with Grey Lynn

Williamson Avenue's median council value is 18% above Grey Lynn's.

Williamson AvenueGrey LynnAuckland
Median council value$1.95m$1.65m$1.07m
Median sale, last 12 months$2.08m$1.7m$1.0m
Sold in the last 12 months2.7%3.3%3.6%
Time between sales9.6 yrs8.2 yrs8.9 yrs
Median section429 m²471 m²607 m²
Median year built199019301980
Council value per m² of floor$20k$14k$8k

Williamson Avenue house prices over time

Median sale price by year; 2026 is the year so far. A year with fewer than two sales has no bar.

2016: $1.34m (7 sales)$1.34m20162017: $1.52m (3 sales)2018: $1.41m (5 sales)20182019: $1.68m (10 sales)2020: $1.7m (8 sales)20202021: $2.37m (17 sales)2022: $2.48m (7 sales)$2.48m20222023: $1.33m (6 sales)2024: $1.4m (6 sales)20242025: $1.6m (5 sales)2026: $2.3m (5 sales, this year so far)$2.3m2026
Sales by year as a table
YearSalesMedian pricePer m² floor
20265$2,300,000$17,061
20255$1,600,000$10,644
20246$1,397,500$20,420
20236$1,335,000$22,336
20227$2,485,000$17,138
202117$2,370,000$23,478
20208$1,702,500$11,496
201910$1,677,500$12,152
20185$1,410,000$9,792
20173$1,525,000$11,914
20167$1,340,000$11,964

Recent sales on Williamson Avenue

The homes on Williamson Avenue

Williamson Avenue has 108 apartments, 103 houses and 8 units and townhouses. More were built in the 2020s than in any other decade (47%).

1900s: 18 (18 homes)181900s1910s: 47 (47 homes)1910s1920s: 19 (19 homes)1920s1940s: 3 (3 homes)1940s1950s: 1 (1 home)1950s1970s: 2 (2 homes)1970s1990s: 11 (11 homes)1990s2020s: 90 (90 homes)902020s

How long owners stay on Williamson Avenue

Homes on Williamson Avenue that resold in the last five years had been held a median 9.6 years (Grey Lynn: 8.2 years).

Time between a home's sales, for 19 resales in the last five years. A home not sold since our records begin is not counted, so owners who stay longest are under-represented.

Building and resource consents on Williamson Avenue

4building consents in the last 5 years
4resource consents in the last 5 years
  • 123 Williamson Avenue1 Aug 2026 · Building consentRbw - proposed re-pile to one storey detached dwg, comprising 3 bedrooms, 1 bathrooms, lounge, dining & kitchen
  • 56 Williamson Avenue1 Aug 2025 · Building consentRbw - new vehicle crossing & single parking in the front yard, & construct a new, minor dwg in the backyard. (kitchen, dining, lounge, two bedrooms, bathrm)
  • 107 Williamson Avenue1 Dec 2024 · Building consentRbw - alterations to the existing dwg. Removal of load bearing wall & chimney. Convert existing bdrm into walk in robe & ensuite bathrm, main bathrm renovation.
  • 118 Williamson Avenue1 Aug 2023 · Building consentRbw - pbc e2e: renovations & extension to existing villa. New deck & swimming pool. New retaining walls, parking & detention tank
  • 69 Williamson Avenue20 Mar 2024 · Resource consentThe establishment of the Grey Lynn Bike Hub within Grey Lynn Park
  • 15 Williamson Avenue8 Dec 2023 · Resource consentThe establishment of a new standalone pole and telecommunication antenna attachment measuring an overall height of 15m from ground level in the road reserve opposite 13 Williamson Avenue, Grey Lynn. T
  • 26A Williamson Avenue12 Oct 2022 · Resource consentThe proposal involves the demolition of the existing northern facade and modifications to the internal layout on the ground and seco nd floor. The northern section of the building will feature a doubl
  • 72 Williamson Avenue1 Jun 2022 · Resource consentThe approved consent provides for the following: - The demolition of an existing pre-1940 building on the site. - The construction of a replacement building of a similar bulk, scale and appearance to

Williamson Avenue in other suburbs

More streets in Grey Lynn

Every street in Grey Lynn, and the suburb's house prices and sales.

Sales and valuations as at 11 September 2026, from council and LINZ records. Medians resting on fewer than 3 sales are not shown.