In second place is Stack St, around the corner from Cremorne St, jumping from seventh most expensive street in 2014.
Stack St has seven properties, with a median RV across these homes of $5.6m. In third place is Westbury Cres, in Remuera, which has a median RV of $5.35m across 13 properties.
On Cremorne St the multi-million dollar properties, all of which have an RV above $3m, are owned by rich-listers, a prominent lawyer and property developers.
In 2014, the then 12 properties on the street had a combined collective value of nearly $90m. Today the Herald's insight's team estimated its combined value was $137.15m.
The house with the largest RV is 12 Cremorne St with an RV of $24.5m, rising $8m since 2014.
The four-bedroom home on 3865sq m of land is owned by Prospect Private Custodian Limited - one of the directors of which is Mark Taylor, a director of a capital investment firm.
Taylor is listed a director of another company that owns another house on Cremorne St, Swanson Land Ltd, owner of 6 Cremorne St. The house has a new RV of $11.25m, up $3.55m.
It was once reportedly owned by Jacqueline and Phillip Mills of Les Mills Gym. The couple reportedly bought the estate in 1982 for $94,000 and spent a decade restoring it.
The second most expensive house on Cremorne St was number 15, which now has a capital value of $22.5m, up $7m since the last valuations in 2014.
It's owned by Lewis Grant and Stephen Lockwood, both of whom are also listed as owning number 20, which has a RV of $13.75m - the third highest RV on the street.
Queen's Counsel Colin Carruthers is another big name on the street, listed as the owner of number 8, a house once owned by former Heart of the City boss Alex Swney, who was jailed in 2015 for tax evasion of nearly $5m.
Carruthers' four-bedroom property has risen in RV almost $2m from $4.65m in 2014 to $6.1m this year.
The cheapest property on Cremorne St was at number 2, with a not-so cheap RV of $3.5m - still well above the city's average house value of $1.076m.
Most expensive Auckland streets based on median RV
Cremorne St, Herne Bay $6.3m across 14 properties
Stack St, Herne Bay $5.6m across seven properties
Westbury Cres, Remuera $5.35m across 12 properties
Omana Ave, Epsom $4.9m across 20 properties
Judge St, Parnell, $4.8m across 11 properties