Independent Insurance for Nassau County Businesses and Homeowners

Nassau County isn't a map to us — it's where we've worked for over 75 years. Our office sits at 145 Pinelawn Road in Melville, right at the Nassau/Suffolk border, which puts us closer to most Nassau County communities than any agency with a distant regional office. When you call Carlstan, you reach the same agents who already know your zip code, your industry, and the carriers that write well in this market.

 

We serve businesses and homeowners across Nassau County: Hempstead, Garden City, Hicksville, Mineola, New Hyde Park, Great Neck, Oceanside, Valley Stream, Lynbrook, Elmont, and Floral Park, among others. Whether you're a restaurant owner on Franklin Avenue or a landlord managing an apartment building near Hempstead, we have the carrier relationships and local knowledge to place your coverage correctly.


Homeowners and Personal Insurance Throughout Nassau County

Nassau County homeowners face a range of risks that vary significantly by location. Inland communities like Garden City, Hicksville, and Mineola deal with standard property concerns — aging infrastructure, liability, and replacement cost gaps. Coastal communities are a different story.

 

Long Beach, Oceanside, Freeport, and Cedarhurst sit in zones with elevated flood and wind exposure. Standard carriers often won't write these properties, or they'll write them with coverage gaps that only become apparent after a storm. As an independent agency, we have access to specialty carriers and surplus lines markets that captive agents cannot reach. We place policies for coastal Nassau County homeowners that other agents turn away — and we make sure the coverage actually reflects what it would cost to rebuild, not just what a standard form allows.

 

Beyond coastal properties, we help Nassau County residents with auto insurance, condo insurance, renters insurance, and personal umbrella coverage. One agency, one relationship, all of it handled by the same people who know your full history.


Nassau County has a specific commercial landscape, and we know it well. Restaurants in Garden City and Great Neck face liquor liability, food spoilage, and high-volume equipment exposure. Apartment building owners in Hempstead and New Hyde Park need landlord coverage that accounts for older building stock and tenant liability. Professional offices — dental practices, law firms, accounting firms — throughout the county require policies that go beyond a standard BOP.

 

We work with commercial clients across these industries every day:

 

  • Restaurant owners who need coverage that reflects the actual risks of food service operations
  • Auto service shops, car washes, and body shops with garage liability and commercial auto exposure
  • Apartment building owners and landlords managing multi-unit residential properties
  • Professional offices — dentists, architects, accountants — that need both property and liability coverage
  • Retailers across Nassau County who need a policy built around their inventory and foot traffic

 

As an independent agency, we're not locked into a single carrier's appetite. We shop your commercial coverage across multiple carriers and find the one that fits your business — not the one that's easiest for us to write.

Commercial Insurance for Nassau County Businesses

Carrier Relationships Built in the Nassau Market


Carlstan has maintained relationships with carriers including Travelers, Progressive, Andover, and specialty commercial markets since 1948. Those relationships weren't built overnight, and they weren't built somewhere else. They were built here, writing policies for Nassau County businesses and homeowners through decades of market shifts, storm seasons, and industry changes.

 

That history gives us placement options that newer agencies and captive agents don't have. When a Nassau County restaurant owner needs a carrier that understands food service liability, or a coastal homeowner needs a market that writes wind coverage in their zip code, we know where to go. Our carrier access is one of the most concrete advantages we offer — and it's a direct product of 75 years in this market.

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Frequently Asked Questions from Nassau County Clients

One Office, One Team, One Point of Contact

When you work with Carlstan, you're not handed off to a call center or a rotating service team. Our office in Melville is staffed by the same small team that handles your account from the first quote through every renewal and claim. Adam and Ryan Erickson are directly involved in the agency's day-to-day work, and clients reach the same people every time they call.

 

We monitor email around the clock and check voicemail regularly, so if something comes up outside business hours, you're not left waiting. For Nassau County businesses and homeowners who want an agent that actually knows them, that's the difference between a transaction and a long-term relationship. Reach us at (516) 437-6565 or through our contact page to get started.