It was an emotional auction for Marva and her brother as they sold the home of their late parents, Bernie and Nona, after more than 60 years.

Ray White Parramatta's head auctioneer Paul Wright sold the property at 25 Pine Street for $1.575 million.

This was one of 591 auctions in Sydney this week, with continued strong results for quality homes amid low stock levels.

The Rydalmere auction was highly competitive with seven registered bidders and four active bidders.

One of the two late bidders quickly sold for a $5,000 increment.

Mava said the house was built by their parents 62 years ago and the family lived in the garage during construction.

"They built the garage first so we could live there, and we have a lot of good memories," she said.

"At the time, the water from the old galvanized pipes smelled so bad we had to run outside to the old chain link toilet.

"We look back on it as a great time. It was an exciting day ...... I could see Dad sitting on the front balcony.

Tears were shed and hugs were exchanged at the end of the auction, which ultimately sold for $100,000 over the reserve price.

Emile Corbino, a broker with Ray White, said it was a great result for the area, which the buyer brothers hope will eventually be rebuilt.

Meanwhile, in Forest Lodge, an investor sold a condo for $50,000 over the reserve price.

The condo at 305/136 Ross Street sold for $800,000, with a first-time buyer winning the bid.

Ray White broker Matthew Carvalho said there were six registered bidders and all were active during the auction.

"Fundamentally good quality, A-rated properties did well, while some other stock buyers were more selective," Mr. Carvalho said.

"There are definitely more investors selling at the moment, probably due to rising interest rates. Investments are always the first to be sold off.

Another investor sold a home at 26 Callan St Rozelle for $2.58 million.

Ray White Norwest broker Fan Li said the buyers were a couple looking to expand.

"All the interested buyers are young couples with children who want to buy a big house near the CBD," Mr Li said.

"There are more investors selling their houses at the moment because interest rates are rising and rents often don't cover mortgage payments," Mr. Lee said.

Auctioneer Michael Garofolo of Cooley's Auctioneers has "one-shotted" a property on a popular street in the Rhodes district with a reserve price of $3.85 million.

The sale of 50 Llewellyn Street had four registered bidders, two of whom bid aggressively, and eventually sold to an owner-occupier who wanted a change of scenery.

Mr. Garofolo said they are planning a major renovation to make the most of the city views.

"It's a stunning place and that's why it sold for the price it did," he said.

Other properties that sold strongly included a North Balgowlah bungalow that sold this week for more than $500,000 above its guide price after an initial public sale.

The home, located at 3 Myrtle Street, was listed for auction in August but eventually sold for a whopping $2,211,000.

That was just nine months after the owner bought the home for $1.7 million while he was in the middle of a renovation project.

Jake Rowe, a broker from The Agency, attributed the quick sale to a lack of inventory and the fact that there are very few properties under $2 million.

According to PropTrack economist Anne Flaherty, the number of auctions across Sydney has risen sharply compared to the same period last year.

"There are 591 auctions planned in Sydney this week, up 56% year-on-year, and 746 auctions planned for next week, up 88% year-on-year," she said.

"The pick-up in sales activity could be a sign of increased seller confidence and is good news for buyers who have had limited options for much of the year," she said.