According to CoreLogic's preliminary figures, of the 45 results collected for the Illawarra so far, there was an auction clearance rate of 73.3 per cent for the week ending December 5.

This is compared to an auction clearance rate of 67.5 per cent for the week ending November 28.

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There were two significant sales at Marshall Mount, a rural spot with a population of 142 and located between Dapto and Albion Park.

The home at 172 North Marshall Mount Road, Marshall Mount sold under the hammer on-site for $3,550,000 on Sunday.

Nestled on prime dairy country, 'Cedarville' is surrounded by bushland and lush paddocks.

"It's been in the same family for more than 100 years," selling agent, Daniel Norris from Ray White Dapto & Horsley said.

The 155-acre property consists of approximately 50 acres of cleared paddocks.

With 16 paddocks in total, water supply is adequate across the property; dams are present in seven paddocks, with the remaining paddocks having access to Duck Creek or reticulated water.

Boasting two houses plus guest accommodation, the farm has room for multiple generations or a bed and breakfast business opportunity (subject to council approval).

Mr Norris said it sold to a local buyer, after strong bidding from five registered parties, all from throughout the Illawarra.

He said it went above the reserve price and the owner's expectations, with the under-bidder also a local.

Mr Norris was also the selling agent for 778 Calderwood Road, Marshall Mount.

It sold for $3,050,000 at an on-site auction on Sunday.

Currently operating as a bed and breakfast, this 50-acre property is situated high up in the escarpment.

The country-style home includes four bedrooms, three ensuites, three living areas, two dining rooms and spa.

Mr Norris said it was a "beautiful and unique" property that was utilised as a popular bed and breakfast, as well as a wedding venue.

There were three registered bidders on the day, with a local buyer winning out in the end after strong bidding.

Mr Norris said the sale price met the owner's expectations.

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A series of residential blocks at Hillside Crescent, Stanwell Park didn't sell at an on-site auction on Saturday.

The Palms, Stanwell Park features five parcels of land, with lots ranging from 555 square metres to 4105 square metres.

The blocks were listed individually for sale.

Interested parties could lodge bids in person or online via AuctionNow.

Four of them were passed in and one withdrawn from auction.

Selling agent, Simon Kersten from Colliers Wollongong previously told the Mercury that the blocks closer to the water were expected to fetch around $2 million each, with Lot 2 the closest to the water.

On Monday, Mr Kersten said there had been some technical issues with regard to parties who attempted to bid online, and overall "we didn't get the turnout and result we expected".

"We knew there was solid interest and a number of buyers who would pay more for the blocks than was being offered on the day, so we made the decision to pass them in and negotiate with the other parties later," he said.

"It's just a part of auctions, sometimes they just don't sell on the day, but they always sell sometime after."

He said the sellers have owned the site for 40 years.

The home at 2 Seaview Road, Austinmer sold under the hammer on-site for $2.7 million.

The home is perched high on Kennedy's Hill with ocean and escarpment views.

Selling agent, Justin Sydenham from Ray White Thirroul said the three-bedroom home has the feel of a Hollywood Hills home with its "funky styling and layout".

Mr Sydenham said it sold to a Sydney buyer from the Eastern Suburbs, who planned to utilise it as a family residence.

The property had a price guide of $2.5 million.

Mr Sydenham said the initial bidding was slow, with only one of the three registered bidders really entering the fray. After an initial bid of $2.55 million, the final bid and sale price was negotiated during the auction.

"We asked them if they would increase their bid to ensure they would secure the property... And at $2.7 million we got acceptance from the seller," he said.

Read more: Auction preview: Illawarra properties up for auction this weekend

Meanwhile, the home at 11 Park Crescent, Oak Flats sold for $1,495,000 on Saturday.

The on-site auction featured a hard-fought, "intense" affair between two local buyers.

The five-bedroom home is set on a 698 square metre parcel of land featuring direct lake access to the rear.

Selling agent, Matt Hutchinson from First National Coastside Shellharbour said there were two active bidders, both from Oak Flats, who placed a total of 30 bids.

The opening bid was $1.3 million. The reserve price was $1.4 million.

"One of them was bidding in person and the other was at a wedding in Robertson, with the people on-site being the successful buyers," he said.

"The buyers are a young family and have friends close by... It was popular because of that direct lake access, and it's in a tightly-held street with a lot of families.

"It was probably the most successful hybrid auction we've had, with people bidding online and in person. It was intense bidding, with two buyers who you could tell really wanted it."

Mr Hutchinson said there were three other interested parties on-site who couldn't get their financing in order in time to bid.