Peter Halsey Cook: Hamptons Architect, Family, and Life Today

Peter Halsey Cook is an American architect and real estate professional based in the Hamptons. He became widely known through his marriage to supermodel Christie Brinkley, but his professional career centers on residential architecture, construction, and East End real estate. Realtor

As of September 2026, Cook remains connected to Hamptons property and design work. Recent listings continue to credit him as the architect behind high-end residential projects in Bridgehampton and other East End communities. Out East

Peter Halsey Cook Quick Facts

Detail	Information
Full name	Peter Halsey Cook
Birth year	1959, based on consistent contemporary age reporting
Profession	Architect and real estate professional
Professional base	The Hamptons, New York
Architecture firm	Peter Cook AIA, Architect
Known for	Hamptons residential architecture and former marriage to Christie Brinkley
Former wife	Christie Brinkley
Daughter	Sailor Brinkley-Cook
Adoptive son	Jack Brinkley-Cook
Current wife	Alba Jancou
Current field	Architecture and Hamptons real estate

Contemporary Associated Press reporting identified Cook as 49 in July 2008, while PEOPLE’s 2023 wedding coverage described him as 64, making 1959 the consistently supported birth year. A strong primary source establishing his exact birth date was not found, so an exact date should be treated more cautiously. CBS News

Who Is Peter Halsey Cook?

Peter Halsey Cook built his professional identity around architecture long before his private life became national entertainment news. His work is closely connected to the Hamptons, where custom residential design involves a mix of historic architecture, coastal landscapes, strict zoning rules, and high-end construction.

A Realtor.com professional profile says Cook grew up in a New Jersey suburb and was influenced by late-19th-century shingle-style architecture, a design tradition strongly associated with eastern Long Island. The same profile identifies him as an architect with a firm in Water Mill and describes his later move into Hamptons real estate. Realtor

The profile also connects Cook to the Cook, Halsey, and Ludlow families, described there as families with long roots in Hamptons history. Because that information appears in a professional biography rather than an independent genealogical study, it is best understood as part of Cook’s published professional background. Realtor

Peter Halsey Cook’s Architecture Career

Cook’s work has centered heavily on private homes. In a 2016 interview with Dan’s Papers, his practice was identified as Peter Cook AIA, Architect, with an office on Montauk Highway in Water Mill.

Interestingly, Cook resisted being defined by one signature architectural look. He told the publication that he did not view himself as a “stylized architect.” Instead, he described his approach as responding to the building site, the client’s lifestyle, and the practical needs of the home. Dan’s Papers

That distinction matters because Cook is often described online simply as a “shingle-style architect.” Shingle architecture clearly influenced him, according to his professional profile, but his own description of his work suggests a broader site-driven approach rather than strict adherence to one style. Realtor

He has also spoken about the less visible side of luxury residential design: integrating mechanical systems, technology, planning requirements, and zoning restrictions into a finished home. He specifically noted that environmentally sensitive Hamptons properties can make permitting and design more complicated. Dan’s Papers

Is Peter Cook Still an Architect?

Available 2026 evidence indicates that Cook remains professionally active.

A September 2026 listing for a Bridgehampton estate credits architect Peter Cook alongside Paramount Development Group. Another 2026 Hamptons property feature describes a newly built Bridgehampton residence as pairing Cook’s architectural work with the developer’s construction. Out East

Cook is also listed by Realtor.com with Saunders & Associates in Bridgehampton, serving communities including Southampton, East Hampton, Sag Harbor, Water Mill, Wainscott, Montauk, and Hampton Bays. Realtor

His professional life therefore spans two closely related areas: designing residential property and working within the Hamptons real estate market.

Peter Halsey Cook and Christie Brinkley

Cook’s public profile changed substantially after his marriage to Christie Brinkley.

The architect and supermodel married in 1996. They had one daughter together, Sailor Brinkley-Cook, and Cook legally adopted Brinkley’s son Jack, whose biological father is real estate developer Richard Taubman. CBS News

Their marriage ended after Cook’s affair with a young employee became public in 2006. Associated Press reporting published by CBS News said Cook acknowledged the affair with Diana Bianchi, who was 18 at the time. Brinkley filed for divorce that year. CBS News

The divorce proceedings became highly publicized. In July 2008, the parties reached a settlement under which Brinkley received custody of the children and retained 18 disputed Hamptons properties, while Cook received $2.1 million and parenting time. CBS News

Brinkley revisited the end of the marriage in her 2025 memoir, Uptown Girl. In an interview and excerpt published by PEOPLE, she described learning about the affair while attending a high school graduation event in the Hamptons and discussed the lengthy legal conflict that followed. Those later descriptions represent Brinkley’s account of the experience. People.com

Peter Cook’s Children

Cook has a biological daughter, Sailor Brinkley-Cook, born during his marriage to Brinkley. Sailor later became a model and has appeared in major fashion and entertainment projects.

Cook also adopted Jack Brinkley-Cook, Brinkley’s son from her marriage to Richard Taubman. Contemporary coverage of the 2008 divorce specifically identified Cook as Jack’s adoptive father. CBS News

For that reason, articles describing Cook simply as having “one child” can be misleading. He is Sailor’s biological father and Jack’s adoptive father.

Who Is Peter Halsey Cook Married to Now?

Peter Cook is married to Alba Jancou, a real estate professional.

Cook and Jancou became engaged in 2019 after a proposal in Santorini, Greece. Their engagement received attention because of the large age difference between them. Global News

They later married in Capri, Italy, in September 2023. PEOPLE’s wedding coverage, syndicated by Yahoo Entertainment, reported that the intimate ceremony took place at Hotel Luna overlooking Capri’s Faraglioni rock formations. The report identified Cook as a Hamptons-based architect and Jancou as his new wife. Yahoo

Jancou also works in Hamptons real estate, and property records and listings have shown the couple working on real estate transactions together. NY State MLS

Was Peter Cook Married to Suzanne Shaw?

Yes. After his divorce from Christie Brinkley, Cook married Suzanne Shaw.

Shaw was publicly identified as Cook’s wife during later legal disputes involving Brinkley in 2012. Entertainment Tonight reported in 2014 that Cook and Shaw had subsequently divorced. ABC News

Cook’s marriage to Alba Jancou is therefore his third publicly documented marriage.

What Is Peter Halsey Cook’s Net Worth?

There is no reliable, publicly documented figure establishing Peter Halsey Cook’s current net worth.

Some biography websites publish estimates, but those numbers generally do not provide financial statements, verified asset records, or other evidence strong enough to establish personal wealth.

The $2.1 million Cook received in his 2008 divorce settlement is documented, but a historical settlement amount should not be presented as his net worth. CBS News

His architecture career, real estate activity, property transactions, or the prices of homes he has designed also do not by themselves reveal how much money he personally owns.

Peter Halsey Cook Today

Peter Halsey Cook remains best known to a broad audience because of his former marriage to Christie Brinkley, but current evidence shows that architecture is still an active part of his professional identity.

His published work and professional profiles connect him closely with Water Mill, Bridgehampton, Sag Harbor, Southampton, and the broader Hamptons residential market. Recent 2026 listings continue to attach his name to major residential projects, while his Realtor.com profile places him with Saunders & Associates. Out East

His personal life has also moved well beyond the marriage that generated headlines in the 2000s. He married Alba Jancou in 2023, while his children, Sailor and Jack, are now adults. Yahoo

For readers trying to separate documented facts from the many recycled claims online, the clearest picture is straightforward: Peter Halsey Cook is a longtime Hamptons architect and real estate professional whose celebrity visibility came largely from his marriage to Brinkley, while his continuing career remains rooted in residential property and design.

FAQs

Who is Peter Halsey Cook?

Peter Halsey Cook is an American architect and real estate professional based in the Hamptons. He is also widely known as the former husband of supermodel Christie Brinkley.

What does Peter Halsey Cook do for a living?

Peter Halsey Cook works in residential architecture and Hamptons real estate. Recent property listings continue to credit him as an architect on luxury residential projects.

Was Peter Halsey Cook married to Christie Brinkley?

Yes. Peter Halsey Cook and Christie Brinkley married in 1996 and divorced in 2008. They have a daughter, Sailor Brinkley-Cook, and Cook adopted Brinkley’s son Jack.