Neptune Flood, a U.S.-based private flood insurance company that uses advanced data analytics and digital platforms to provide flood coverage to homeowners and businesses, has struck a strategic partnership with Somers Syndicate 3705, bringing fresh underwriting capacity onto its private flood insurance platform.
The agreement widens the company’s ability to meet demand across the US flood market, which keeps stretching beyond what public schemes comfortably handle.
Neptune Flood is notable for disrupting a market long dominated by the federal government through the National Flood Insurance Program (NFIP), offering faster quotes and customizable policies online.
In the United States, flooding is among the most prevalent natural disasters. Purchasing flood insurance can bring peace of mind and protection. When it pertains to flood insurance, there are various misconceptions about flood insurance to avoid.
Private flood insurance keeps gaining ground as homeowners and commercial buyers look for options outside government-backed programs, according to Beinsure.
Climate-driven losses stack up, awareness of flood exposure rises, and insurers are reworking both capacity and appetite.
By pulling in backing from the Lloyd’s market, Neptune Flood is setting itself up to grow without blowing out underwriting controls.
Flood insurance premiums have long been based on outdated maps and manual land surveys, leading to limited options and inaccurate risk assessment.
Neptune Flood changes that by using advanced technology to analyze hundreds of data points for each property, ensuring more accurate pricing to cover flood damage.
This means flood insurance policies tailored to your risk. With savings of up to 25%, you get better coverage at a lower price, all in under 2 minutes.
The company runs as a specialist flood insurer, leaning hard on proprietary technology, data science, and automated underwriting to price risk and push policies through fast. Its digital-first setup supports residential and commercial risks nationwide, with rapid quotes and near-instant issuance.
As of September 30, 2025, Neptune Flood reported more than 260,000 policies in force across the US. That number hints at scale, and also at exposure management headaches that come with it.
Under the deal, Somers Syndicate 3705 provides underwriting capacity for Neptune Flood’s offerings. The syndicate operates as the Lloyd’s platform of Somers Re, a group active across several specialty insurance classes.
Its entry adds another highly rated balance sheet to Neptune Flood’s capacity panel and signals that established carriers still see room to write private flood, even as volatility creeps higher.
Lloyd’s expertise now feeds directly into Neptune Flood’s underwriting framework, sitting alongside its data-led risk models, Beinsure noted.
Acrisure Re supported the transaction and will act as Lloyd’s broker, handling the connective tissue between Neptune Flood and the syndicate. These plumbing details rarely get attention, but without them, deals stall.
Beyond the immediate capacity boost, the partnership points to a wider shift. Private insurers are expected to shoulder more of the flood protection gap as exposure grows faster than public mechanisms adjust.
Access to scalable, well-structured underwriting support is turning into a gating factor for specialists in this space. Some will manage it. Others won’t.
Neptune Flood president Matt Duffy said Neptune and Somers share a view on where the private flood market is heading and described the deal as a way to expand the company’s capacity provider panel through Lloyd’s.
He tied the move to continued growth in the US flood market as private carriers take on a larger role in protecting property owners.
This partnership facilitates our ongoing growth in the US flood insurance market as private insurers play an increasingly important role in protecting homeowners and businesses.
Matt Duffy, Neptune Flood president
David Booth, active underwriter of Syndicate 3705, said Neptune Flood has built a platform centered on data, technology, and underwriting discipline.
He added that the transaction allows Somers to grow its Lloyd’s presence alongside a partner already established in private flood. The relationship, he said, is just getting started.
“Through this transaction, Syndicate 3705 and Somers are pleased to grow our Lloyd’s platform with a pre-eminent partner in Neptune Flood. We look forward to the continued growth of the relationship,” Matt Duffy says.
Founded in 2018, Neptune Flood is the largest private flood insurance provider in the US, offering primary and excess residential, commercial, and condominium insurance throughout the United States.
Our effortless, intuitive, and on-demand platform allows agents and customers to quote and bind a policy in under two minutes, all built by our stellar in-house technology team.
“We partner with AM Best rated insurance companies to offer flood insurance in 50 states plus Washington DC. In October 2021, Neptune acquired Jumpstart, a parametric insurance company, adding parametric earthquake to our portfolio,” Duffy noted.
In May of 2024, Neptune acquired Charles River Data, enhancing our in-house data science, artificial intelligence, and machine learning capabilities.
