21 Tanaka Avenue, Bonogin — Off-Market Report

The 10 sales behind that range — and every adjustment

A sale down the road is not evidence until it is adjusted for how it differs from this home. Here is each sale we used, what we changed, and by how much.

48 Tolga Road

Sold 19 August 2026 · 5.46 km away

Sold for

$1,575,000

Adjusted to this home

$1,589,475

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Land size	this home 4844 m² · comparable 859 m²	+$117,956
Micro-location	this home -0.0641 · comparable 0.0125	−$96,516
Street	this home 0.0057 · comparable -0.0693	+$94,500
Bedrooms	this home 4 · comparable 5	−$47,556
Car spaces	this home 2 · comparable 3	−$28,000
Floor area	this home 292 m² · comparable 316 m²	−$24,038
Distance to beach	this home 11.48 km · comparable 7.89 km	−$1,871
Net adjustment		+$14,475

A further 10 factors were compared and found the same on both properties, so no money moved.

17 WARATAH CT

Sold 17 January 2026 · 3.09 km away

Sold for

$1,620,000

Adjusted to this home

$1,626,420

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Bathrooms	this home 2 · comparable 3	−$48,000
Street	this home 0.0057 · comparable -0.0251	+$39,917
Year built	this home 2009 · comparable 1994	+$36,000
Micro-location	this home -0.0641 · comparable -0.0398	−$31,493
Floor area	this home 292 m² · comparable 284 m²	+$8,013
Land size	this home 4844 m² · comparable 4777 m²	+$1,983
Net adjustment		+$6,420

A further 11 factors were compared and found the same on both properties, so no money moved.

5 Koda Court

Sold 11 August 2026 · 3.15 km away

Sold for

$1,650,000

Adjusted to this home

$1,528,435

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Micro-location	this home -0.0641 · comparable -0.0044	−$78,804
Bathrooms	this home 2 · comparable 3	−$48,000
Bedrooms	this home 4 · comparable 5	−$47,556
Land size	this home 4844 m² · comparable 3566 m²	+$37,829
Year built	this home 2009 · comparable 1994	+$36,000
Floor area	this home 292 m² · comparable 313 m²	−$21,034
Net adjustment		−$121,565

A further 10 factors were compared and found the same on both properties, so no money moved.

23 EMERSON DR

Sold 31 May 2026 · 5.85 km away

Sold for

$1,505,000

Adjusted to this home

$1,593,649

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Land size	this home 4844 m² · comparable 797 m²	+$119,791
Floor area	this home 292 m² · comparable 191 m²	+$101,162
Micro-location	this home -0.0641 · comparable 0.0043	−$82,354
Bathrooms	this home 2 · comparable 3	−$48,000
Distance to beach	this home 11.48 km · comparable 7.88 km	−$1,950
Net adjustment		+$88,649

A further 11 factors were compared and found the same on both properties, so no money moved.

59 Whiteash Road

Sold 28 November 2025 · 2.60 km away

Sold for

$1,730,000

Adjusted to this home

$1,634,603

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Floor area	this home 292 m² · comparable 359 m²	−$67,107
Bathrooms	this home 2 · comparable 3	−$48,000
Bedrooms	this home 4 · comparable 5	−$47,556
Street	this home 0.0057 · comparable -0.027	+$45,257
Micro-location	this home -0.0641 · comparable -0.0371	−$37,368
Land size	this home 4844 m² · comparable 3811 m²	+$30,577
Year built	this home 2009 · comparable 1997	+$28,800
Net adjustment		−$95,397

A further 10 factors were compared and found the same on both properties, so no money moved.

58 Gardenia Drive

Sold 6 January 2026 · 3.26 km away

Sold for

$1,480,000

Adjusted to this home

$1,451,695

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Micro-location	this home -0.0641 · comparable 0.0158	−$94,602
Floor area	this home 292 m² · comparable 333 m²	−$41,066
Street	this home 0.0057 · comparable -0.0274	+$39,190
Land size	this home 4844 m² · comparable 3676 m²	+$34,573
Year built	this home 2009 · comparable 1995	+$33,600
Net adjustment		−$28,305

A further 12 factors were compared and found the same on both properties, so no money moved.

18 Glenmore Drive

Sold 10 June 2026 · 4.75 km away

Sold for

$1,610,000

Adjusted to this home

$1,471,579

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Street	this home 0.0057 · comparable 0.1365	−$168,470
Floor area	this home 292 m² · comparable 198 m²	+$94,150
Micro-location	this home -0.0641 · comparable -0.0241	−$51,520
Bathrooms	this home 2 · comparable 3	−$48,000
Year built	this home 2009 · comparable 1990	+$45,600
Car spaces	this home 2 · comparable 3	−$28,000
Land size	this home 4844 m² · comparable 4242 m²	+$17,819
Net adjustment		−$138,421

A further 10 factors were compared and found the same on both properties, so no money moved.

13 Finnagin Drive

Sold 18 May 2026 · 5.81 km away

Sold for

$1,950,000

Adjusted to this home

$1,747,354

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Land size	this home 4844 m² · comparable 1652 m²	+$94,483
Micro-location	this home -0.0641 · comparable -0.013	−$79,716
Street	this home 0.0057 · comparable 0.0549	−$76,752
Car spaces	this home 2 · comparable 4	−$56,000
Bedrooms	this home 4 · comparable 5	−$47,556
Floor area	this home 292 m² · comparable 324 m²	−$32,051
Distance to beach	this home 11.48 km · comparable 7.76 km	−$5,054
Net adjustment		−$202,646

A further 10 factors were compared and found the same on both properties, so no money moved.

13 BASSWOOD CT

Sold 17 October 2025 · 2.83 km away

Sold for

$2,000,000

Adjusted to this home

$1,830,900

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Car spaces	this home 2 · comparable 7	−$140,000
Floor area	this home 292 m² · comparable 238 m²	+$54,086
Bedrooms	this home 4 · comparable 5	−$47,556
Micro-location	this home -0.0641 · comparable -0.0365	−$44,160
Year built	this home 2009 · comparable 2000	+$21,600
Cladding	this home 2 · comparable 3	−$16,000
Land size	this home 4844 m² · comparable 4745 m²	+$2,930
Net adjustment		−$169,100

A further 9 factors were compared and found the same on both properties, so no money moved.

148 Glenmore Drive

Sold 2 September 2026 · 3.91 km away

Sold for

$2,075,000

Adjusted to this home

$1,411,001

What we added and subtracted to make this sale comparable to 21 Tanaka Avenue
Micro-location	this home -0.0641 · comparable 0.15	−$338,052
Street	this home 0.0057 · comparable 0.1365	−$206,526
Car spaces	this home 2 · comparable 5	−$79,898
Bathrooms	this home 2 · comparable 3	−$45,656
Bedrooms	this home 4 · comparable 5	−$45,234
Year built	this home 2009 · comparable 1990	+$43,374
Floor area	this home 292 m² · comparable 279 m²	+$12,385
Land size	this home 4844 m² · comparable 5000 m²	−$4,392
Net adjustment		−$663,999

A further 9 factors were compared and found the same on both properties, so no money moved.

We are not claiming to be more accurate than anyone else. We are showing you the sales, the adjustments and the band they produce, so you can judge the number yourself.

Gold Coast homes sitting unsold for 60 to 180 days doubled from March to August. Where does 21 Tanaka Avenue sit?

Gold Coast homes listed for 60 to 180 days rose from 1,288 in March to 2,618 in August (SQM Research). A rising count of homes sitting unsold has historically been associated with downward pressure on asking prices.

But property markets do not move as one—and neither do individual homes.

We traced the estimated value of 21 Tanaka Avenue over the past 18 months, compared it with Bonogin’s wider market, and examined the indicators most likely to reveal what happens next.

21 Tanaka Avenue

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The 10 sales behind that range — and every adjustment

48 Tolga Road

17 WARATAH CT

5 Koda Court

23 EMERSON DR

59 Whiteash Road

58 Gardenia Drive

18 Glenmore Drive

13 Finnagin Drive

13 BASSWOOD CT

148 Glenmore Drive

Gold Coast homes sitting unsold for 60 to 180 days doubled from March to August. Where does 21 Tanaka Avenue sit?

Your home

See your home the way a buyer does

18-20 Honeysuckle Lane

34-36 Lydford Close

2-4 Hersden Court

23 Emerson Drive

57-59 Lydford Close

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