The community group was spurred into action after a bay villa was moved off its site at 63 Francis St so the owners could build a larger, replica villa with four bedrooms, a swimming pool and basement garaging.
It is also upset to see demolition begin on the Bethany Centre, the former Salvation Army home for pregnant women, in Dryden St, Grey Lynn, so five houses can be built on the site.
The Dryden St and Francis St sites are just outside the Residential 1 zone, which would have required resource consent and possibly public notification.
Last Friday, the council's hearings committee voted to give affected neighbours a say on the proposed demolition of an 1885 villa at 8 Lee St in Parnell, rather than throw it open to possible objections from the wider community, including the Parnell Heritage watchdog group.
Officers had recommended the application to demolish the cottage be approved.
But this met with stiff opposition from Waitemata councillor Mike Lee, Waitemata Local Board chairman Shale Chambers and Parnell Heritage.
Said Mr Lee said last week: "Auckland's heritage is still under unremitting attack. House by house, street by street, the council-approved destruction goes on."
The council's heritage team reported the house was a poor quality structure that had been significantly modified since 1940.
Public meeting: Grey Lynn RSC, 1 Francis St, Wednesday at 7pm