About this venue
Jacob Altemus
EXECUTIVE CHEF
9 Prime Steakhouse is a restaurant and wedding reception venue located in West Chester, PA. It offers a distinguished historical setting for an elevated celebration. Located in the heart of West Chester borough, it has an air of sophisticated metropolitan luxury.
9 Prime Steakhouse is situated in a magnificent 19th-century neoclassical bank building, which was a pillar of Pennsylvanian ambition for over 150 years. When you step through the doors, you are enveloped in an impressive display of elegance, a setting that is sure to wow your guests. Towering ceilings and mid-century furnishings meet marble bars and art-deco finishes, creating an ambiance of sophistication that transforms any celebration into an unforgettable occasion. 9 Prime Steakhouse has a variety of private event spaces to choose from. Gay Street can accommodate up to 150 guests and has a dedicated private bar, dimmable lighting, and a baby grand piano with a professional pianist available. Then there is The Mezzanine, ideal for gatherings of up to 70. It has panoramic views of the historic and beautifully remodeled entrance. Market Street private dining room is a warm, intimate space that seats up to 40 guests, perfect for private dinners, business meetings, or smaller receptions. High Street private dining room comfortably seats up to 20 guests and offers a cozy, refined ambiance. The Vault seats up to 20 and features the building’s original bank vault, creating a unique and memorable experience. Each private space features customizable lighting and multimedia capabilities, ensuring your celebration flows effortlessly, no matter which space you choose.
9 Prime Steakhouse offers elevated dining that draws visitors from far and wide. At 9 Prime, your wedding feast will showcase the finest in elevated American cuisine. Your guests can enjoy premium dry-aged steaks and fresh-caught seafood. From their signature Chilean Sea Bass with Asian-inspired accompaniments to heritage Duroc pork chops and twin lobster tails, every dish is crafted with restaurant-quality precision using locally sourced ingredients.
Meet the team
Jacob Altemus
Executive Chef
Jacob Altemus is a talented chef with over 15 years of experience in the industry. As an expert in upscale high-volume operations and farm-to-table restaurants, he specializes in unforgettable dining experiences that leave a lasting impression.
Reviews
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10/15/25
Dalilah and the entire team made the evening wonderful and seamless -- I had some reservations about the prix-fixe menu, but the food was delicious. Upon entering, the hostess kindly helped carry my tablescape items to the private room. The t...
able arranged for 16 was perfect, Dalilah was so patient and flexible with planning and communicating; request Cole to take care of your party as he was delightful and attentive and the private room allowed our rowdy group to listen to Taylor Swift loudly on a loop, move about and dance around. We had a fantastic time and the birthday girl was so happy.
4/28/25
Dining here was a unique experience.
The chairs were super comfortable, the lighting perfect, and the atmosphere is something of its very own.
For starters we had the pork belly, calamari, and octopus. The calamari was splendid as was the pork...
belly, the octopus had a surprisingly soft texture and was not chewy like I was accustomed to.
Entrees were the dry aged Kentucky bone in strip as well as the 4oz wagyu beef with scallops and grilled shrimp. Both Kentucky steaks were heavily salted and the wagyu honestly tasted like butter. The main downside (in my opinion) everything was heavily charred. I felt like I ran my tongue over a grill that is how strong the char taste was on really everything.
I really appreciated how seriously the restaurant took food intolerance and allergies. It did make me sad that if you cannot eat chocolate there is rather limited options for dessert, and even more limitations due to lack of stock.
The price is high but the portions are generous for the starters and entrees.
I wouldn't recommend the single scoop of icecream for 9$ that honestly felt excessive.
Overall we had a wonderful experience, the staff were very friendly and accommodating. We especially loved the treat they presented my father for his birthday that made everything extra special.
10/27/25
Excellent service and food. The hostesses and our server were extremely attentive and friendly. I loved my cauliflower steak and the sides were delicious. I would highly recommend the 9 Prime Potatoes, Creamed Spinach sides, and the Delmonico s...
teak.
Beautiful decor and music, it was truly a special night.
11/15/25
Had an incredible dining experience at 9 Prime. We started with their cheese board and it was perfect. A mix of cheeses, fresh bread, nuts, and jam that paired well together.
For my main, I got the lobster and truffle carbonara. It was UNREAL...
. My mouth is still watering. When the server told me it was the chefs favorite, I knew I had to try it! I'm a dirty martini connoisseur and this was perfect. Cold and smooth with bleu cheese stuffed olives. If you’re looking for an elevated dining experience in West Chester, this is definitely the spot.
7/22/25
Met with our wealth manager and his family for dinner. Great atmosphere with all the imagery of an upscale restaurant inside an former bank. I believe it's on par with Del Frisco's Steakhouse in Philadelphia but on a much smaller scale. Food an...
d drinks were excellent but given the amount of people present (very little) I was surprised by the lack of service. With a group of 8 our waiter was not attentive to our needs. Appetizers and drinks took time as well as the typical check-in to refresh drinks or see if anything else was needed. Until the next time I will mark this as a one-off experience. I hope during the next visit the service will restore my faith to continue banking with 9 Prime.
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9 Prime Steakhouse
Jacob Altemus
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Executive Chef
Wedding vendors in West Chester
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