The CoreLogic September index, published on the OneRoof website also indicated the same figures over the past year.
However, CoreLogic NZ head of research Nick Goodall pointed out Napier's annual growth rate had now dropped below 10 per cent for the first time since May 2016.
"Fifty per cent growth over the two and a half year period between October 2015 and April 2018 was always going to impact affordability, and with an average value now exceeding $500,000 that certainly seems the case.
"Values grew 2.6 per cent over the last three months in Hastings, perhaps a reflection of the slightly better affordability as the average value is almost $50,0000 lower compared to its Hawke's Bay neighbour."
Tremains managing director Simon Tremain agreed.
"I think we are seeing a little bit of a slow-down. The growth is there but it keeps coming back every month when you compare it back to 12 months ago.
"There are still plenty of buyers out there but it definitely has slowed down a little bit. We've had a great run and you have to expect a slow-down at some stage."
Property Brokers Hawke's Bay regional manager Guy Mordaunt said sales had been "very strong".
"September was a big month for us. Listings anecdotally seem to be rising but the [Real Estate Institute] statistics will tell when they come out. Hawke's Bay continues to see strong prices as the supply and demand ledger still falls on the sellers side although it will be interesting to see what happens if more listings come on in October and November."
Harcourts Hawke's Bay general manager James Cooper said the start of spring had certainly lifted the market.
"The start of spring has definitely seen a lift in activity, with our teams taking increased enquiry from homeowners who have been waiting for the end of winter before bringing their property to the market.
"The Hawke's Bay market still has a shortage of stock which is manifesting in strong buyer demand and numerous multiple offers."