Excelon Construction was founded by Sajin on a simple idea — that a brownstone facade is not a contracting job, it is a piece of work that someone will look at every morning for the next thirty years. This is the story of how he came to do it, and why he still does it the way he does.
Sajin grew up in Bangladesh, in a place where building with stone and brick was not a specialty trade — it was a daily skill. Walls were laid by hand. Mortar was mixed in the courtyard. If a thing cracked, you did not tear it down; you found out why it cracked, and you fixed the why before you fixed the what. There was no insurance, no LPC, no warranty. There was only the work, and the next family who would live in front of it.
He learned the parts of a wall the way other people learn the parts of a sentence. He learned how water moves through old stone — slowly, patiently, finding every weakness — and he learned that almost every facade problem he would ever solve was, in the end, a water problem dressed up in different clothes. He was not yet old enough to drive when he could already point at a piece of stonework and tell you which mason's hand had cut it.
Years later, in a city of seven million people, that early training would turn out to be the most useful thing he ever brought with him.
When Sajin arrived in New York from Bangladesh, he did what any honest tradesman does — he found work. Not the work he wanted. Just the work that was there. He swept sidewalks. He carried buckets. He stood on scaffolding in February when the wind off the East River made every steel pole feel like a knife. He worked under old-school NYC masonry contractors, the men who had restored Park Slope and Brooklyn Heights and Greenwich Village block by block since the 1970s.
Those men did not teach with words. They taught by handing you a trowel and grunting when you got it wrong. They taught the old way — the way that has built every brownstone still standing in this city.
For ten years he watched, listened, and copied. He learned that cornice work is not roofing and not siding — it is its own quiet trade, with its own grain, its own breathing rhythm in heat and cold, its own way of failing when nobody is paying attention. He learned that a stoop is not a staircase; it is a sculpture that has to carry weight. He learned that the cheapest mortar mix is also the one you will be back to repair in seven years, and that the right mortar mix is also somehow the one your competitor will not bother to use.
By the early 2000s he was not the apprentice anymore. He was the man other contractors called when a job was too detailed, too historic, or too easy to mess up.
Sajin started Excelon Construction in 2005 with two hard rules. He has not broken either one in the twenty years since.
The first rule was that he would never put his name on a building he would not have wanted to own himself. If a homeowner asked him to apply a finish he knew would peel in three winters, he was going to refuse, even if the homeowner insisted, even if it cost the job. There are easier ways to make a living than telling people the truth, but Sajin had not seen any of them lead anywhere good.
The second rule was that he would never disappear after the check cleared. If something failed in the first year, in the second year, in the fifth year — he was still picking up the phone. He was still walking back to the building and looking at it. Sometimes the failure was his fault and he fixed it. Sometimes it was a leak from above that no one could have foreseen, and he explained that, and helped find the right contractor for it. Either way, the relationship did not end the day the scaffold came down.
Twenty years later, those two rules are still the entire business plan. Excelon does not advertise. Most of our work today comes from the neighbors of past clients, or from owners we met fifteen years ago calling us back for the next building. There is no marketing department. There is just a phone, a clipboard, and Sajin's truck.
"I never wanted to be the biggest contractor in Brooklyn. I just wanted to be the one your neighbor calls when she sees the work I did on your house." — Sajin
It is unfashionable to call masonry "art" in 2026. Art is something that hangs on a wall, not something that is the wall. But spend ten minutes looking — really looking — at the cornice of an 1880s Park Slope brownstone, or the carved scrollwork on a Crown Heights stoop, or the way a Brooklyn Heights row house presents three different colors of stone in three different planes, and tell us with a straight face that the people who built it were not artists.
They were. They were sculptors with a budget, working in the medium of a city. They carved acanthus leaves into limestone they would never see again. They mitered cornice brackets they knew would be sixty feet above the sidewalk and invisible to almost everyone. They did it because the work itself was the point. They did it because someone, eventually, would look up.
When we restore a brownstone, our first job is to not break what they made. Our second job is to put back what time has taken — exactly what time has taken, and nothing else. A perfectly clean, perfectly straight, perfectly machine-finished brownstone is not a restored brownstone. It is a fake. The hand of the original mason needs to remain visible. The texture, the slight unevenness, the intentional asymmetry — that is what makes the building that building and not the new condo down the street.
This is why we do not chase volume. Why we never have. A crew that does forty buildings a year cannot pay attention the way the work demands. A crew that does eight or ten can. We will turn down a job before we turn it into something we do not believe in. That has cost us money. It has bought us twenty years of being the contractor we wanted to be.
Lime mortar instead of straight Portland on historic brick. Vapor-permeable coatings on brownstone, never sealers that trap moisture. Color-matched stone patches over filler-and-paint shortcuts. The right material costs more on day one and pays for itself by year five — every time.
Excelon is family-owned and family-operated. Our core crew has been together for years — most of them came up the same way Sajin did, working under the older men, learning the trade by hand. We are not the biggest masonry company in Brooklyn. We are not trying to be.
The crew is small for a reason. On every Excelon project, Sajin or a senior craftsman is on site every day. The person who quoted your job is the person who oversees your job. There is no project manager you have never met. There is no subcontracting out the actual stonework to someone you cannot name. If you ask a question on Tuesday, you get an answer on Tuesday — usually from the person whose hands are on your facade.
This is harder to scale than the other way of running a contracting business. We know that. It is also the only way we know how to make sure the work that comes off our scaffold is the work we promised when we shook your hand.
These are not marketing language. These are the rules Sajin printed and stapled inside his truck the day he started Excelon. They are still there.
If we cannot do it correctly, we will not do it at all. We have walked off jobs over this. We will again.
Sometimes the right call is "wait two years." We will tell you that, even when it costs us the work.
The person who quoted your job is the person you call. There is no middle layer.
Sidewalks swept. Neighbors notified. Dust contained. Brownstone work is messy; how we handle the mess is part of the job.
Year one, year five, year fifteen — if something needs attention, we are still picking up the phone.
I have used Sajin on a number of properties — everything from pouring new sidewalk concrete to repairing brownstone facade. He is always great to work with. Honest, on time, and the work holds.
The best way to start is a phone call to Sajin. We will set up a time to come look at your facade, walk through what's failing and what isn't, and put together a written estimate within a week.