John Mangini
John Mangini is the Broker of Record and owner of NextHome Premier, a real estate brokerage at 102 Town Center Drive in Warren Township, Somerset County, New Jersey. He is a Warren Township resident, has been licensed in New Jersey real estate since 2002, and writes Warren, Local., this publication. This page is the factual record: role, background, and the research behind the site.
Role and firm
John founded NextHome Premier in July 2017 after leaving RE/MAX Premier, and serves as its Broker of Record. The office is at 102 Town Center Drive, Warren, NJ 07059, at the Mountain Boulevard and Mount Bethel Road crossroads. He holds real estate licenses in New Jersey, New York and Pennsylvania.
Background
Before real estate, John worked in metallurgical engineering and commodity trading. He has served Warren-area buyers and sellers since 2002 and lives in Warren Township.
The research
John maintains Garden State MLS records for Warren Township, joined to Somerset County parcel records. As of the August 21, 2026 refresh it holds 4,802 closed Warren sales, the earliest closing February 6, 1997. Three public products are built from it:
The Warren Housing Index (WRNX), a proprietary index of Warren price per square foot with calendar year 2000 equal to 100.
The Warren Real Estate Report Card, a printed market mailer sent to Warren households since 2018, 99 issues archived.
Warren, Local., this publication, covering the Warren housing market, township government, schools and community from primary sources. Standards are documented on the data and methodology page.
The reference library
The permanent Warren research pages John maintains: Warren by the Numbers, the market page, the Housing Index, Neighborhoods, Warren vs nearby towns, Zoning and development, Government and budget, Property taxes, Schools, Selling in Warren and the Warren Calendar.
The review record
125 clients have left written reviews, every one a five-star rating: 94 from sellers, and 94 describing a transaction in Warren. The complete review record is published at JohnMangini.com.
Elsewhere
Reviews on Zillow · LinkedIn · JohnMangini.com · NextHomePremier.com · Instagram · Facebook
Posts from this publication are syndicated to Warren New Jersey Real Estate on Facebook and the same account on Instagram.
Contact
732.236.1087 · john@nexthomepremier.com · 102 Town Center Drive, Warren, NJ 07059. Corrections, tips and story ideas are welcome, and corrections get priority. More on how the site itself works is on the about page, and the commitments behind the reporting are on the editorial standards page.
Updated September 2, 2026. Licensing, affiliations and the review record on this page are re-checked against their sources at each update.