Peter Diamantidis

Peter Diamantidis

Director / Licensee / Principal at Ray White United Group | St Marys
  •   5   (516 reviews)

Peter's sales performance at a glance

See how Peter has performed in the last 12 months on RateMyAgent*

53
Reviews
28
Median days on market
31
Properties for sale
168
Sold properties
$1m
Average sale price
$177.1m
Total sales value

*Includes all properties sold (last 12 months) as lead and supporting agent and published on ratemyagent.com.au. It may not be complete and can exclude off-market, private sales and undisclosed pricing and sold dates. Contact agent for full sales history.

  • priceExpertbadge

    Consistently meets client expectations for property purchase price.

  • aotybadge

    Recognised for going above & beyond for their clients.

Peter's customer service awards

See what RateMyAgent awards Peter has won

  • Suburb WinnerOxley Park
  • Suburb WinnerWerrington
  • 5x Suburb WinnerOxley Park - 2026, 2025, 2024, 2021, 2020
  • 4x Suburb WinnerWerrington - 2026, 2025, 2020, 2019
  • 4x Suburb WinnerSt Marys - 2025, 2024, 2021, 2020
  • 3x National Top 100Australia - 2025, 2021, 2020

About Peter

Peter Diamantidis is the Founder and Selling Principal of Ray White United Group, which has grown to eight thriving office locations across St Marys, St Clair, Mount Druitt, Rooty Hill, Marsden Park, Glenwood, Arndell Park & Toongabbie. Working in real estate since the age of 15 Peter started in property management then moved into sales which has won an avalanche of awards ranking him in the top of 5 agents in NSW for a number of years and a high volume agent averaging 200 - 300 transaction every year. In 2021 - 2025 Peter was ranked in the top 5 real estate agents in NSW through realestate.com.au out of over 9,000 real estate agents. Peter’s exceptional attention to detail, dynamic energy and impressive negotiation skill sets him apart from his competitors with different ways to combat any situation nothing too small or too big. In 2017,2018,2019,2020,2021,2022,2023,2024,2025 Peter was ranked in the top 100 agents throughout Australia by REB which is an incredible result. With over 22 Years experience, Peter started in real estate at the age of 15 after leaving school. Starting from the bottom has given Peter a comprehensive understanding of every facet in relation to a property sales transaction and has allowed him to develop an ability to get a deal together and deliver for his clients in a way that few agents can. Peter is also a popular property commentator for National Nine News, Channel 7, Australian Property Magazine, The Daily Telegraph, Sydney Morning Herald, Your Property Magazine, The Australian and many more. “ Specialising in properties across Western Sydney & The Hills, with a strong passion in dealing with development blocks and off the plan developments, Peter’s market knowledge and dedication combined with the support of his team, ensure his clients are provided with an incredibly professional real estate experience every time.

Peter's reviews

  5  
Peter has 516 reviewsacross 43 different locations, showing 6.
Review Peter
Peter's qualities as told by our client reviews: supportive, responsive, dedicated, great negotiation, reliable, local expert, clear communication.
Was this helpful?
Seller review
Trustworthy and professional
5 days ago
Trustworthy and professional

Peter and Patrick have been excellent throughout the sale of my house. Going above and beyond and guiding me through the process well. I couldn’t ask for more and appreciate their insight.

Seller review
Excellent and honest communicator and kept me updated throughout the whole process.
18 days ago
Excellent and honest communicator and kept me updated throughout the whole process.

I had an excellent experience working with Peter on the sale of my property. Their communication was honest, clear, and consistent from start to finish. I was kept informed at every stage of the process, which made the entire experience smooth and stress-free. I would highly recommend them to anyone looking for a reliable and professional real estate agent.

Seller review
Amazing Experience
30 days ago
Amazing Experience

Peter and Gabbi was amazing. They were very patient with us and understood our needs. I would definitely recommend them.

Seller review
Peter was a joy to deal with from beginning to end.
about 1 month ago
Peter was a joy to deal with from beginning to end.

Peter absolutely knows his market well and I was kept up to date every step of the way. Peter helped achieve a higher than expected sale price and I couldn’t be happier with my experience. I would highly recommend Peter to anyone who is in the market to buy or sell a home.

Seller review
A professional in his work with a great positive outlook.
about 2 months ago
A professional in his work with a great positive outlook.

It seemed that Peter knew the market very well. He gave good suggestions at the right moment. Always punctual and patient and very persevering regarding the sale of the property. He has a good positive outlook on getting results, which were achieved for me.

Show all 516 reviews
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Peter's properties

Peter has 31 properties for sale and sold 168 properties in the last 12 months, showing 4, sorted by most recent activity

For Sale
JUST LISTED!
1-5/5 Canberra Street
Oxley Park NSW 2760
4
2
2
Other
SoldMay 21, 2026
$1,080,000
57 Murray St
St Marys NSW 2760
4
1
2
House
SoldMay 20, 2026
Price not available
1702/245 Merrylands Road
Merrylands NSW 2160
2
2
1
Unit
SoldMay 17, 2026
$1,950,000
44 King Street
St Marys NSW 2760
3
3
2
House
Show all 199 properties
See Peter at work
Get a genuine perspective of what it’s like working with Peter.
Auctions
Mount Druitt

Peter's sold properties

Peter has sold 168 properties in the past 12 months, showing 4.

Enter your property details to filter

I'm selling a
bedroom
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bathrooms in
Property imageAddressBedroomsBathroomsCarparksProperty TypeClosing PriceDate Sold
57 Murray St, St Marys, NSW, 2760
57 Murray St
St Marys NSW 2760
4
1
2
House$1,080,000May 21, 2026
1702/245 Merrylands Road, Merrylands, NSW, 2160
1702/245 Merrylands Road
Merrylands NSW 2160
2
2
1
UnitUndisclosed PriceMay 20, 2026
44 King Street, St Marys, NSW, 2760
44 King Street
St Marys NSW 2760
3
3
2
House$1,950,000May 17, 2026
4 Witley Cl, St Marys, NSW, 2760
4 Witley Cl
St Marys NSW 2760
3
1
5
House$1,112,000May 11, 2026

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