
Park City & Summit
Mountain living across Deer Valley, Canyons, Promontory, and East Village.

Mark Seipert
Your real estate professional
Buy · Sell · Invest
Buying or selling a home is a big decision, and you deserve someone who will listen, give you honest advice, and help you feel confident through the process.
Before real estate, I spent decades in the produce industry building relationships and helping grocery stores navigate changing markets. Over the years, I learned that great service comes down to being dependable, paying attention, and getting things done.
That’s how I try to live my life too. I love cooking for family and friends, serving the people I care about, and creating experiences that bring people together. Real estate is simply another way I get to do that in a meaningful way.
When you work with me, you’ll get someone who is truly committed to making sure your experience is the best it can be.

On the house
List with me and you’ll get up to $1,000 for handyman work, deep cleaning, or touch-ups. Your call. First impressions matter.

The pricing edge
Most agents don’t know how to read the data. Buyers overpay; sellers leave money on the table. My brokerage uses a proprietary pricing model that tells you what a home is really worth — whether you’re writing an offer or setting a list price.
~$10K in upside, on average.
Every step handled
Most agents handle thirty of them and call the rest “details.” We don’t. Every step has a checklist, an owner, and a deadline so nothing falls through the cracks.
Areas we serve

Mountain living across Deer Valley, Canyons, Promontory, and East Village.

Urban living across the Avenues, Sugar House, Holladay, and Cottonwood Heights.

Family living across Lehi, Saratoga Springs, Alpine, and Highland.

Established neighborhoods across Bountiful, Farmington, Kaysville, and Layton.

Full corridor reach with deep local knowledge from Ogden to Spanish Fork.
The personal side
I’ve always enjoyed helping people, building relationships, and being someone others can count on. Real estate felt like a natural next step because it gives me the opportunity to guide people through important decisions and truly serve them in a meaningful way.
I spent decades in the produce industry working with grocery stores, leading teams, and helping businesses navigate changing markets. A big part of my career was building long-term relationships and understanding how to take care of people well.
I enjoy getting to know people, understanding what matters to them, and helping make the process feel less stressful. I genuinely care about helping people feel comfortable and confident in their decisions.
I believe in honesty, consistency, hard work, and treating people the right way. I think communication matters, and I want clients to always feel like they can trust me.
I love cooking for family and friends, spending time outdoors, fishing, golfing, and creating experiences that bring people together.
Every year I head to Ketchikan, Alaska, rent a boat, and guide my own fishing trip for salmon and halibut. It’s one of my favorite traditions.
You’re never alone
Each member of the team is behind each and every transaction.

Founder / Broker
Adam spent 8 years negotiating billions in commercial real estate inside Intel and Adobe before turning that lens on residential real estate. He runs every transaction like the finance leader he was — pricing strategy, structure, and leverage.

Owner / Lead Agent
Tyler leads deal execution and operations, bringing an engineering mindset to every transaction. He keeps details tight, timelines moving, and ensures each deal is handled with precision.

Operations Lead
Jess is a top-producing agent and business owner with over a decade in real estate. With deep knowledge of accounting and insurance, she keeps the main thing the main thing, guiding deals with clarity and consistency.

Transaction Lead
Ellie is a top-producing agent known for sharp execution. She anticipates problems before they surface, acts quickly, and keeps every deal moving forward with precision and focus.

Marketing
Brit leads brand, marketing, and client experience. She brings clarity to messaging, elevates every touchpoint, and ensures the Lancaster & Co. experience is thoughtful and well executed.

What we stand on
We do what’s right, speak the truth, and stand tall in every deal.
We lead with expertise, data, and good judgment—not guesswork.
Every detail matters. Our systems deliver precision, consistency, and trust.
We give more than we take and honor every relationship.
When storms hit, we face them head-on and guide others through.

Get in touch
Send me a quick note and I’ll be in touch ASAP. Or text me directly at (385) 312-4356.