With 785 auctions held in Sydney this week and 913 to be held next week, things are really heating up.

On Saturday morning, a two-bedroom unit in Randwick was sold to a first-time buyer couple for A$130,000 over the reserve price.

The unit at 8/11A The Avenue sold for $1.515 million.

The seller, Nicole, who did not give her surname, bought the flat 15 years ago and said she took a "pragmatic approach" to the purchase.

She says: "I decided to look at the things I couldn't change ...... outlook, aspect and location.

I wasn't worried about shiny kitchens or appliances.

Nicole, who bought the flat in 2008, says the previous owners had lived there since the 1960s and never changed a thing.

We've done some work to give the place a new look," she said.

The auction of the flat attracted 13 bidders and a large audience, including six active bidders.

The reserve of $1.025 million was reached in just two bids, and the bidding showed no signs of stopping. Bids were placed in increments of $25,000, then slowed to $10,000, $5,000 and finally $1,000.

Ray White auctioneer James Hayashi dropped the hammer amidst enthusiastic hugs from the couple's family and friends. The purchase concludes their year-long journey to become first-time homeowners.

Natalie, who now lives in Maroubra, said she was "heartbroken" but felt relieved when the auction ended.

She bought the property in 2008 for $500,500,000 and said she was thrilled with the result.

One thing about property is that you never know if and when you have to sell, she says.

You always want the property to be attractive to people, but no amount of renovation can make it more attractive. This place is definitely attractive in that respect.

Ray White Eastern Beaches agent Angus Gorrie said the flat attracted more than 120 visits during the marketing campaign.

We generated so much interest in the flat that we ended up bringing the auction forward by a week, he said. There was a lot of interest from first-time buyers," he said.

The sale was one of many successful auction results throughout the weekend, including a deceased property at 63 McCredie Rd Guildford which sold for $195,000 over the reserve price.

LJ Hooker agent Steven Khawam described the $1.295 million sale price as a "blood-curdlingly good price", with four of the seven bidders actively involved in the bidding.

It was the first time the property had been sold in 60 years, with the children of the original owner deciding to sell the property.

They were thrilled and the auction really boosted the price, said Mr Khawam.

Ray White Park Coast East agent Sam Capra sold a four-bedroom South Coogee panoramic home at 15A Cairo Street to a family from Randwick for $10.5 million.

It was a competitive auction with all three bidders, and the starting price was $9.7 million, he said.

"I believe it was the fourth-highest selling price in the suburbs. The spring selling season has officially begun. The prestige market is firming up, we have buyers, and we are selling properties at high prices."

Ray White TNG-Glenwood director Shiv Nair and Ray White NSW chief auctioneer Alex Pattaro also had a successful day at auction, with four of the four homes selling without incident.

Mr Nair said: We sold homes at all price points today, the market stayed firm and we sold all homes at strong prices even with the increase in inventory.

Competition was strong at all price points today. Our real-time auction prices show that demand was high today.

Properties sold included 24 Tweed St, The Ponds, which sold for $1,755,000 with 12 registered bidders, and 45 Rocks St, Kellyville, which sold for $2,120,000 with nine registered bidders.

There were a lot of buyers this time and the winning buyer first saw the house when it was still on the market, Mr Nair said.

They were a young family of three who had moved from a flat. It was a very competitive auction.

PropTrack economist Anne Flaherty said the arrival of spring would allow homebuyers to "benefit from a surge in the number of properties coming onto the market".

This spring looks set to be even busier than last year, with 2,403 auctions taking place across Australia over the first weekend of spring, she said.

This represents a 13 per cent increase in the number of auctions over the same period last year.

More homes for sale is good news for buyers who will have limited options for much of the year.

Ms Flaherty said improved seller sentiment was the main driver of the increase in listings for sale, with realestate.com.au's July Property Seekers Survey showing a jump in the number of homeowners who thought it was a good time to sell.