Most people know Nathan Klairmont as a Boston real estate professional.

Few would picture him alone in the White Mountains, hiking through subzero temperatures with no cell service, no distractions, and no one else for miles.

But that's exactly where he feels most at home.

For years, Nathan has spent days at a time backpacking through some of the country's most remote landscapes, often seeking out the cold rather than avoiding it. While most people would call it extreme, he calls it necessary.

"The silence is powerful," he says. "In our world, we're constantly connected. Getting away from all of that allows me to reset."

It may seem like an unlikely passion for someone whose career revolves around constant communication, negotiations, and relationships, but in many ways, the outdoors has shaped the way Nathan approaches both life and business. Patience, preparation, resilience, and consistency are qualities that have followed him from the mountains into every stage of his career.

Long before building a successful career in Boston, Nathan grew up outside Chicago in a family deeply rooted in commercial real estate. His grandfather founded the family business, which was later carried on by his father, uncle, brother, and cousins. While real estate was always part of his life, after moving to Boston for college in 2007, Nathan decided to build a name for himself on the East Coast.

Before earning his real estate license in 2017, he developed his sales skills through door-to-door business sales, technology sales, and Enterprise Rent-A-Car's management training program. Each role taught him resilience, communication, and how to build lasting relationships, lessons that would become the foundation of his career.

Like many new agents, Nathan started with rentals throughout Allston and Brighton. He even drove Uber before and after appointments to help support himself while building his business. Instead of chasing quick success, he immersed himself in Boston's unique rental market, learning neighborhoods, pricing, and investment properties while focusing on genuine relationships.

That investment paid off.

Many of the renters he helped eventually became first-time homebuyers. Landlords who trusted him with leasing their properties later relied on him for investment sales. One relationship led to another.

"It all snowballs," Nathan says. "If you take care of people, those relationships continue to grow."

In 2020, Nathan joined Concept Properties, a move he describes as one of the most important decisions of his career.

"I learned more in my first six months at Concept than I did in the previous three and a half years," he says.

Working alongside mentor Matt Ramey and surrounded by a collaborative culture where everyone genuinely wants to see one another succeed, Nathan found the environment that allowed his career to take another leap forward.

Around that same time, he purchased a 1915 Victorian two-family home in Dorchester. Renovating the property nearly to the studs gave him firsthand experience with construction, budgeting, and project management. What started as a personal investment quickly became another layer of expertise that now benefits every client he serves.

Today, Nathan balances two demanding roles. Alongside growing his real estate business, he serves as Vice President of Development at Concept Properties, helping oversee luxury residential developments throughout Brookline and Boston. As part of a four-person team, he works closely with architects, engineers, contractors, and designers to bring projects from concept to completion before often representing the finished homes on the sales side.

"I'm really boots on the ground making sure our dream becomes a reality," he says.

That combination gives Nathan something few agents can offer.

Because he's involved long before a home ever reaches the market, he understands every decision that shaped it. From structural changes and engineering challenges to finish selections and design intent, he brings buyers a level of confidence that goes well beyond a traditional transaction.

"I know every nook and cranny," he says. "I can clearly articulate why certain things are the way they are because I helped build them."

That perspective also makes him a valuable resource for investors and homeowners considering renovations. Having personally completed major projects himself, Nathan understands both the opportunities and the challenges that come with adding value to a property.

"I'm really in it for making relationships," he says. "I'm not pushing someone into something just to close a deal."

That philosophy continues to drive his success. At the time of this interview, Nathan had more than $14.4 million under agreement for the year, all while balancing a thriving real estate business with the responsibilities of overseeing multiple luxury development projects.

Outside of real estate, Nathan's greatest priorities have shifted in recent years.

Nathan and his wife are raising their young son, and while life looks a little different these days than it did before becoming a father, the outdoors remain a big part of who they are as a family. Nathan laughs that his son is already "a mountain baby," and he's looking forward to introducing him to the same trails and adventures that have been such an important part of his own life.

When he isn't working, you'll often find him spending time with his family or taking his classic car out for an evening drive through New England. He jokes that alongside his "mountain baby," he also has a "metal baby," another passion that brings him plenty of enjoyment.

Looking ahead, Nathan is excited to continue growing alongside the team at Concept while helping more buyers, sellers, and investors achieve their goals. But success, for him, has never been measured solely by production.

It's measured by the life he's building. A career earned through hard work. A family that keeps him grounded. Relationships that last long after the closing table. And whenever possible, a trail leading somewhere quiet, where the only thing louder than the silence is the reminder of why he started the journey in the first place.