Mark Seymour

Senior Sales Agent, Ray White Hornsby

Senior Sales Agent/ Negotiator

A trusted advisor within the local community for over a decade, Mark is your complete sales professional, providing a premium client service that is delivered with honesty, enthusiasm, expert negotiation skills and impressive market knowledge.

Combining natural competitiveness and a true passion for property, Mark is dedicated to delivering an exclusive service that is specifically tailored to suit each of his clients individual needs. Approaching all aspects of the buying/selling process with careful attention to detail, Mark effortlessly incorporates both modern and traditional methods of communication.

Through implementing the latest marketing techniques, Mark is able to successfully reach a widespread audience whilst providing a pleasant stress-free experience throughout the entire property journey.

Sincere, hardworking and a natural people person, Mark has built a formidable reputation based on trust, reliability and consistency allowing him to continually achieve outstanding results.

A true local, Mark loves where he lives and will strive for excellence in exceeding your expectations every time.


Professional easy to talk to and honest.

Reece & Victoria - Vendor - Hornsby, December 2017

Mark exceeded our expectations from start to finish. He was always reliable and professional - we couldn't have asked for a better agent.

Craig & Jenny - Vendor - Hornsby, November 2017

It was an absolute pleasure dealing with Mark; from start to finish. He's such a decent, genuine person; he explained everything succinctly; was very patient & gave me great confidence throughout the whole process! I cannot give enough praise to Mark and the team at Ray White and to his knowledge, expertise, and thoroughness in all aspects of selling my house. He has such a calm demeanour and made me feel at ease with any concerns/worries I had, especially as it came nearer to auction day. He was also very approachable on any questions I may have had and is just a very trustworthy person in general. I have absolutely no hesitation in recommending Mark to any prospective friends/people who wish to sell their house. I have absolutely nothing to fault with his service provided.

Dominique - Vendor - Hornsby, September 2017

I found Mark to be a very honest man to deal with, he kept me updated after each inspection, he knows his business. I have brought and sold homes in the past and Mark stands alone as a top agent compared to others I have used, honesty and integrity are high on my list and Mark completely fulfills both, highly recommended by myself.

Wade - Vendor - Hornsby

Mark was, in every way, a very competent professional. He possesses a great personality appropriate to his work. He has great communication skills. I was confident he was going to achieve the best outcome for me from beginning to end. I was particularly impressed at the way he organised the Auction day. I would recommend Mark Seymour to anyone selling their property.

Domenica - Vendor - Hornsby

I can't recommend Mark Seymour highly enough. He is incredible, he treated my elderly mother with so much respect and kindness and made the whole process easy. I completely trusted Mark with the sale of our home and would recommend him to anyone. An honest very caring Gentleman!!!! Thankyou again Mark.

Florence - Vendor - Hornsby

Mark was so helpful throughout the whole purchase process, from always being reachable to mediating perfectly between us and the vendor. His manner was understanding and compassionate, and we couldn't have been happier to find such a professional, trustworthy agent. Thanks again for everything, Mark!

Andrew & Samantha - Vendor - Hornsby Heights

After 48 years of living in our home in Hornsby we elected to sell. With little or no experience in the sale of our home it was a God send to have mark guide us through every aspect required in preparation of our home for sale, communicating in a timely manner the progress of the sale and finally negotiating an end selling price beyond our initial expectations. We would highly recommend Mark to any prospective seller wishing to gave the skills Mark offers as a true professional.

Graham & Narelle - Vendor - Hornsby Heights

I would recommend Mark Seymour to anyone considering the sale of their property. Mark went above and beyond to assist me with the sale of my family home.

Lisa - Vendor - Hornsby Heights

Fantastic people skills and very professional.

Piotr & Anna - Vendor - Mount Colah

Mark is very knowledgeable and approachable. He is always very positive and calm. He is very good at keeping you updated on the sale process and prospective buyers.

Diane - Vendor - Mount Colah

Mark is very positive and professional. He understood our needs and pursued to achieve them.

Juan - Vendor - Hornsby

Mark provided an excellent marketing strategy and worked hard to attract a large number of potential buyers.

Martin - Vendor - Normanhurst

Mark presented strongly with sound data to support his recommendations and undertook to communicate regularly and provide clear feedback good or bad to manage my expectations. He delivered on all his commitments and generated buyer numbers well in excess of expectations. Mark delivered exactly on what we initially agreed to. Meaningful and timely feedback on progress. This in turn led to an excellent auction result through the generation of great competition. I have no hesitation in recommending Mark Seymour as the agent of first choice.

Greg & Joanne - Vendor - Mount Colah

Informative and reliable, always available to answer questions.

Riley & Jennifer - Purchaser - Hornsby

Mark had been recommended to me by a friend and I have no hesitation in also recommending Mark to any potential home owner wishing to sell their property. From day one Mark demonstrated all the attributes that I consider to be important in an agent who has the responsibility of selling our most valuable asset. Mark was reliable, trustworthy, listened to our needs and wishes and kept us informed of progress on the sale of the house. Mark was sensitive to our needs and requests, obviously knew the market, gave us consistent and much appreciated feedback throughout the sales process, was able to attract a large number of prospective buyers and followed up those potential buyers after the open houses. On a personal level Mark exhibited a high degree of integrity, had a great sense of humour and showed a genuine interest in us as people, not just as clients. We also give thumbs up to his support team.

Rodolphe & Helen - Vendor - Berowra Heights

Mark Seymour was the main reason. He was excellent. Jennifer Wengi was also excellent in support of the sale. The team they gathered to prepare the collateral for the marketing of the home were also very good. It was pleasurable and really a faultless exercise and I can't think of single thing I could suggest to improve the experience. Responsive, professional, great value, excellent team backing, access to foreign buyers and unique marketing initiatives. Just sign him.

Marc - Vendor - Hornsby

Mark was very courteous and professional in his actions. He provided regular updates after each open house and status of each contract request.

Ian & Cheryl - Vendor - Hornsby Heights

We have known Mark for a long time, and were more than happy to have Mark represent us in what was a complex and potentially difficult sale.

John & Julie - Vendor - Berowra Heights

We chose Mark to sell our home as we had bought the property through him 4 years ago. We were impressed with his service then so it made sense to use his services again. Mark is very easy to work with and I trusted his professional judgement on all parts of our sale. He is friendly and approachable and always kept me in the loop with daily phone calls. Highly recommended!

Ted & Fiona - Vendor - Hornsby

Very happy with Mark's service.

Xuan - Vendor - Hornsby

We were impressed with Mark Seymour and found him professional and easy to talk to, he always kept us up to date with how things were going when our mother's house was on the market and was easy to talk to who had a lot of market knowledge of the area.

Nathalie - Vendor - Hornsby

Mark made the entire process of selling my house totally stress free, a true professional all the way. He did all the hard work and always gave 110% of his efforts - everytime! All phone calls and emails were returned and answered promptly - a very approachable and considerate man plus he's easy to get along with. Mark Seymour was always upfront and very honest with every aspect of the sale process, a true professional all the way. Totally honest and upfront with all the potential challenges I was going to face selling up my property, but it was his cheery and can-do attitude that eventually got me through the line. I highly recommend Mark to anyone out there thinking of selling their home.

Russell - Vendor - Berowra

Very comfortable dealing with Mark, he advised honestly and helped reasonably in resolving issues during purchase process.

Bernard & Karen - Vendor - Hornsby Heights

Mark handled a very difficult sale of a family home after the death of a parent. He handled everything sensitively and went out of his way to make the experience as stress free as possible. He even organised trades and forwarded our mail whilst the house was empty. Above an beyond doesn't really cover it. His market knowledge and advice during the process never steered us wrong and we achieved a great result. Not just in terms of price but also in terms of finding a buyer that would cherish what was a beloved home. After the sale of our parent’s home he presented us with a very personal gift of a coffee table book of photos of the house and gardens. It took our breath away. Such a simple idea in reality but takes enormous thought to action. I think that is the way that I would describe Mark's overall style. Very attentive, communicated well at all stages of the process and very caring attitude given the situation we were in. I would not hesitate in recommending Mark to any vendor.

Anne - Vendor - Mount Colah

Mark, and Jennifer, gave us such great personalised attention during the sales process. They encouraged us, validated the things we did to the house, and were always there when we needed them. We were very encouraged by the feedback Mark gave after each open house. They are both excellent people who we would want to do business with again.

Ian & Jo - Vendor - Berowra

Great experience from start to finish. Nothing was ever too much trouble and I always felt that I was getting a full an honest picture of what was happening.

Niki - Vendor - Hornsby Heights

Mark was up front about all the details, and during the sale time was able to keep us informed about all processes and responses. He was able to meet our requests and deliver a quick sale that was not our expectations.

Robert & Tony - Vendor - Hornsby

Very personable and very helpful.

Ray & Christine - Vendor - Waitara

It is with pleasure that we recommend Mark Seymour from Ray White Real Estate Agency in Hornsby. Mark had an initial meeting with us and took diligent notes regarding our home. We found Mark to be a highly attentive agent who was in close contact with us at all times regarding the sale of our property. Mark’s efforts exceeded our expectations and we always found him to be professional, conscientious, courteous and motivated. We have no hesitation in recommending Mark.

Gordon & Phillipa - Vendor - Hornsby Heights

When dealing with him as both a vendor and a potential buyer, we found him to be conscientious in following up on things, clear and prompt in his communication, respectful and assertive.

Sean & Danielle - Vendor - Mount Colah

He was professional, friendly, punctual knew the market and available to speak with when needed.

Simon & Anita - Vendor - Mount Colah

He was easy to talk to and did not push in any way. He also spoke realistically about the process and likely outcome.

Norma - Vendor - Hornsby

Mark was always either on the phone or email keeping us up to date every step of the way, and if we had a question he would always answer straight away or if he couldn't find out and get back to us asap.

Steve & Serena - Vendor - Hornsby

Mark is a total Professional. He kept us informed of all progress in the sale. I believe he treated all parties fairly and honestly.

Neil & Leanne - Vendor - Hornsby Heights

Mark was approachable, professional and knowledgeable - everything you need in an agent. He was recommended to us by friends and we would not hesitate to recommend him to others.

James & Helen - Vendor - Hornsby

Mark was very attentive and understood our motivation to sell. He respected our house and made good suggestions on how to de-clutter for the sales process. Mark has been informative, professional and down to earth through the whole process. He is unique to this industry!

Amanda & Steven - Vendor - Hornsby

He is exceptionally efficient and he knows what clients want from an agent. He really kept me informed throughout the process. He was always available to answer any questions and he was a pleasure to handle my business.

Peter - Vendor - Hornsby

Mark was courteous, prompt and actually did what he said he would do.

Elizabeth - Vendor - Hornsby

Polite, knowledgeable, realistic in expectations. He was fantastic in selling our home in 4 days for much more than the asking price.

Dean & Jayne - Vendor - Mount Colah

Most recent or updated property listings from Mark Seymour

3 Beds
2 Baths
1 Parking
16 Northview Pl
Mount Colah, NSW
For Sale $995,000
16 Northview Place Mount Colah NSW 2079 AUS
-33.670935 151.109897
3 Beds
1 Baths
1 Parking
16a Warrina St
Berowra Heights, NSW
Price Guide $850,000
16a Warrina Street Berowra Heights NSW 2082 AUS
-33.615242 151.144325
2 Beds
1 Baths
1 Parking
147D Galston Rd
Hornsby Heights, NSW
For Sale
147D Galston Road Hornsby Heights NSW 2077 AUS
-33.675025 151.096802
4 Beds
1 Baths
1 Parking
24 Lonsdale Ave
Berowra Heights, NSW
$980,000 To $1,070,000
24 Lonsdale Avenue Berowra Heights NSW 2082 AUS
-33.607559 151.140945
4 Beds
2 Baths
3 Parking
37 Berkeley Cl
Berowra Heights, NSW
Price Guide $1…
37 Berkeley Close Berowra Heights NSW 2082 AUS
-33.615350 151.134032
3 Beds
2 Baths
4 Parking
432 Somerville Rd
Hornsby Heights, NSW
Price Guide $1…
432 Somerville Road Hornsby Heights NSW 2077 AUS
-33.643687 151.109942
5 Beds
3 Baths
2 Parking
23 Banyula Pl
Mount Colah, NSW
Price Guide $1…
23 Banyula Place Mount Colah NSW 2079 AUS
-33.653932 151.124667
5 Beds
2 Baths
2 Parking
18 Brushwood Pl
Hornsby, NSW
Price Guide $1…
18 Brushwood Place Hornsby NSW 2077 AUS
-33.707316 151.083585