About Mark Greskowiak - Saginaw, MI real estate agent
Mark Greskowiak is a top real estate agent in Saginaw, MI with Century 21 Signature Realty. They primarily work with sellers and have closed at least 53 transactions over the past 12 months — 97 over the past two years. Mark Greskowiak's experience includes luxury homes, first-time homebuyers, and VA loans and military buyers.
Mark and Rachel were a great team to work with. They are the most knowledgeable agency in the Great Lakes area. They were prompt, efficient, and available at any time. Mark sold our home within two weeks at asking price. Rachel was available around our busy schedule and showed us homes in the evenings and on weekends. She made sure everything was advancing smoothly during the transactions. They both kept in constant contact with us and they have a great process in place from first contact through closing. We couldn't be happier!
Mark & Rachael were both awesome to deal with. They listed our house and sold it within a few days. We closed the deal in under a week. They responded to our calls even after business hours. They made this process so easy and we can't thank them enough!
Sold our home in weeks. Unlike the other realtor we had on market for 6 months and no sale. We had more showings in 2 weeks than the whole 6 months with other realtor. Very knowledgeable group of employees and nice to work with.
Wonderful experience with Mark, Mary and Janice. They were great to work with...knowledgeable, always responded promptly to any questions I had, efficient with organizing and managing the necessary forms, information exchange, contacts and meetings involved with the sale. Home sold and closed in one month!
The entire team at The Mark G Group were wonderful. They made the sale of our house seem easy. Mary took awesome pictures of the inside and outside of our home for the listing. Mark G. guided us prior to the sale of our home and gave us recommendations that would help sell our house quickly. He also has great negotiation skills and worked well with the other realtors to make the transition from our old home to our new home seem effortless. I also want to give a special thanks to Rachel G. If we ever had to look for a new house again we would have Rachel showing us homes. My husband and I had an absolute blast with her! She is fun and upbeat and is knowledgeable about homes. If she did not know the answer to a question we had about the house we were viewing, she would find out the answer promptly. She too is a great negotiator and was a great representative to have by our side at the closing of our new home. There were also people in the office that we did not get to meet personally but appreciated their hard work and dedication to help with the sale of our home and the purchase of our new home. I cannot say anything negative about The Mark G Group...Five Stars!!!
I have already recommended the Mark G Group to my friends and family. They were FANTASTIC to work with - professional and knowledgable - and sold our house the FIRST DAY it was on the market - for our asking price. You can't get better than that.
Extremely knowledgeable of the market. Very professional and easy to communicate with, did not over promise. Received offers within weeks of going on the market.
We tried to sell our house with a different realtor for almost a year with nothing to show for it. We then contacted Mark and his team and had our house sold within the first week back on the market. Great people that know what they are doing.
Sold my house in less than 2 months and at a great price! I am very pleased with him and his staff. He is very friendly and there whenever I call! I'm so glad that I went with Mark. The closing and paper work was easy to understand and the process was quick and to the point.
I highly recommend Mark Greskowiak when buying a new home. Mr. Greskowiak is an extremely knowledgeable realtor who does everything he can to achieve your goals when buying/selling homes. The team he has assembled is there to assist you whenever necessary and Mark is always proactive in terms of selling your property or finding the right home for your family.
Mark Greskowiak: Rankings and sales metrics (Saginaw, MI)
Recent closed sales
97
#1 in Saginaw
#1,005 statewide in MI
Recent sales volume
$21.82M
#48 in Saginaw
#3,054 statewide in MI
Awards and badges
2025Top AgentSaginaw, MI
Top producer
Recent sales metrics
A breakdown of performance metrics from verified closed transactions over the past two years. The local median shows typical results for agents in this market, so you can compare.
Metric
Mark Greskowiak
Local median
Sale-to-list (sell sides)
97.0%
99.0%
Days on market (sell sides)
57
56
Sale-to-list (buy sides)
96.0%
99.0%
Days on market (buy sides)
71
55
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Mark Greskowiak: Experience and specialties (all markets)
Client mix
88%
Home sellers
85 sales
12%
Home buyers
12 sales
Typical home sales price
$44K
Low
$208.4K
Typical
$835K
High
Count of recent sales by price range
A breakdown of this agent's closed sales over the past two years by price bracket, showing where most of their transactions fall.
Price range
Transaction countCount
Share of totalShare
≤$200K
45
46.1%
$200K–$300K
29
30.1%
$300K–$400K
14
14.1%
$400K–$500K
4
4.1%
$500K–$750K
4
4.1%
$750K–$1M
1
1.1%
Count of recent sales by property type
A breakdown of this agent's closed sales over the past two years by property type, showing their experience with single-family homes, condos, townhouses, and more.
Property type
Transaction countCount
Share of totalShare
Single-family homes
85
87.6%
Multi-family homes
3
3.1%
Townhouses
1
1.1%
Condos
7
7.2%
Commercial
0
0.0%
Land
1
1.0%
Mobile homes
0
0.0%
Manufactured homes
0
0.0%
Count of recent sales by specialty
A breakdown of this agent's closed sales over the past two years by specialty, showing experience with transaction types that require specialized knowledge or serve specific groups.
Each agent profile is built from a comprehensive analysis of verified real estate transactions, licensing data, and other public sources. Our goal is to make complex market information accessible and meaningful - helping you understand an agent's experience, performance, and focus areas in context.
We consolidate and interpret key data points that reflect how an agent operates in their local market, including:
Transaction volume and recency of activity
Balance of buyer- and seller-side representation
Sale speed compared with local averages
Pricing and negotiation outcomes
Years of experience and transaction consistency
Specialties across property types, price ranges, or client needs
Data, transparency, and updates
All data is drawn from verified public records and internal research. We clean, normalize, and cross-check information to ensure it reflects real-world activity as accurately as possible. Profiles are updated on an ongoing basis as new data becomes available. Our process evolves continuously to improve precision and depth of coverage.
Any customer reviews and ratings displayed on this profile are sourced from Zillow Group via the Zillow Bridge API. Reviews are refreshed regularly to reflect the most current data published on Zillow and may include reviews for team members associated with this agent.
Why this matters
Real estate decisions are personal and high-stakes. These profiles are designed to give you a factual, up-to-date snapshot of each agent's background and results - the kind of objective insight you can use to evaluate whether they're a strong match for your goals.
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