Peter Halsey Cook has spent decades designing homes in the Hamptons, yet architecture is not the reason most people first encounter his name.

For much of the public, he remains Christie Brinkley’s former husband—the architect at the center of a marriage and divorce that generated years of tabloid attention.

That description leaves out quite a lot.

Cook built an independent career designing high-end residential properties on Long Island’s East End. He later moved into real estate sales as well. His family connections to the Hamptons stretch back generations, and even after the celebrity headlines faded, his professional work continued.

His personal life also moved on.

After another marriage and divorce following Brinkley, Cook became engaged to Alba Jancou in 2019. Four years later, the pair married in Capri, Italy.

So the more useful question in 2026 is not simply, “Who was Christie Brinkley’s husband?”

It is: Who is Peter Halsey Cook now?

Peter Halsey Cook Quick Facts

Detail	Information
Full name	Peter Halsey Cook
Known as	Peter Cook
Profession	Architect and real estate professional
Nationality	American
Birth year	1959 is widely reported
Exact birthday	Not firmly established by strongest public sources
Birthplace	New Jersey, United States
Professional base	Hamptons, New York
Architecture firm	Peter Cook AIA, Architect
Real estate affiliation	Saunders & Associates
Former wife	Christie Brinkley
Current wife	Alba Jancou
Biological child	Sailor Brinkley Cook
Adopted son	Jack Paris Brinkley-Cook
Net worth	Not reliably verified

Who Is Peter Halsey Cook?

Peter Halsey Cook is an American architect associated with luxury residential design in the Hamptons, particularly the communities of Water Mill, Southampton, Bridgehampton and the surrounding East End.

His current Realtor.com profile describes him as both an architect and real estate professional with Saunders & Associates. It also identifies him as the owner of an architecture firm in Water Mill.

Cook became widely known outside architecture after marrying supermodel Christie Brinkley in 1996.

The relationship made him a regular subject of entertainment coverage. Their eventual separation and public divorce trial pushed his name far beyond the design world.

But before, during and after that marriage, Cook’s occupation remained rooted in houses.

Not celebrity television.

Not acting.

Not social media.

Actual houses.

And that part of his life is easier to document than many celebrity biographies make it seem.

Where Was Peter Halsey Cook Born?

Cook is consistently associated with New Jersey in biographical records.

His current Realtor.com professional profile states that he grew up in a New Jersey suburb and became interested in the late-19th-century shingle-style architecture that would later become central to his work on Long Island’s East End.

That architectural influence makes sense in the Hamptons.

Shingle-style houses—with weathered exteriors, complex rooflines, dormers and a design intended to fit the coastal landscape—are deeply tied to the visual identity of eastern Long Island.

Cook ultimately built a career in an area where the architectural language that interested him as a young man was already part of the local history.

When Was Peter Halsey Cook Born?

A large number of biography websites list January 1, 1959 as Peter Halsey Cook’s date of birth.

IMDb currently gives that exact date and identifies New Jersey as his birthplace.

There is, however, a reason to be slightly cautious.

When Us Weekly covered Cook’s engagement in October 2019, it described him as 60 and noted that his daughter Sailor had posted a 60th birthday tribute in June of that year.

That does not fit neatly with a January 1 birthday.

The birth year 1959 is reasonably consistent with contemporary reports describing him as 49 during the July 2008 divorce proceedings.

The precise month and day are less secure.

For that reason, it is better to say that Cook was born around 1959 rather than building zodiac signs and precise age calculations around an uncertain January 1 date.

How Old Is Peter Halsey Cook in 2026?

If the widely reported 1959 birth year is correct, Peter Cook is approximately 67 years old in 2026.

His exact age on any specific date depends on his actual birthday, which is not as firmly documented as many online biographies suggest.

Peter Cook’s Connection to the Hamptons Goes Beyond His Job

One of the more interesting details hidden beneath the celebrity coverage is Cook’s family connection to eastern Long Island.

His professional real estate biography says he is descended from the Cook, Halsey and Ludlow families, whose Hamptons roots extend back more than 350 years.

That gives his career a different context.

Cook is not simply an architect who happened to find wealthy clients in a fashionable vacation market.

According to his professional biography, his family history and later career are both connected with the region.

That local knowledge also became useful when he expanded from architecture into selling real estate.

What Does Peter Halsey Cook Do?

Peter Cook works in two closely related areas:

architecture and Hamptons real estate.

His architectural practice, Peter Cook AIA, Architect, has long focused on custom residential work.

The firm’s LinkedIn description calls it a full-service architecture practice specializing in custom residences and says its approach is based on understanding clients’ preferences and collaborating with them on the final design.

Cook is also associated with Saunders & Associates as a real estate professional. Realtor.com currently lists him with the brokerage and identifies service areas including Southampton, Sag Harbor, East Hampton, Montauk, Wainscott and Water Mill.

Architecture and real estate naturally overlap in the Hamptons.

Someone who understands construction, site planning, zoning, renovation potential and residential design can look at a property differently from an agent whose experience is limited to sales.

That appears to be the niche Cook has built.

Peter Cook’s Architecture Style

Cook’s own comments provide a much better description of his work than the generic phrase “luxury architect.”

In a 2016 interview with Dan’s Papers, he explained that he does not consider himself a “stylized architect.”

Instead, he described his process as responding to the site, the homeowner’s lifestyle and the client’s individual program.

He also spoke about the complexity of integrating technology, mechanical systems and local zoning requirements into high-end residential design.

That distinction matters.

A Hamptons home may look effortless when photographed, but the actual design process involves far more than selecting shingles and large windows.

Coastal properties may involve environmental restrictions.

Clients often want complex entertainment, lighting and media systems.

Modern mechanical equipment needs to disappear into a home that is still supposed to feel relaxed.

And local architecture carries enough history that a new house can look badly out of place if it ignores its surroundings.

Cook’s work sits inside that problem.

Is Peter Cook Still Working as an Architect?

Yes.

One of the clearest problems with many biographies is that they discuss Peter Cook’s architecture career entirely in the past tense.

Recent evidence shows otherwise.

In November 2025, Hamptons.com featured a waterfront Sag Harbor property described as 2024 new construction by Peter Cook AIA. The home included six ensuite bedrooms, waterfront views, multiple fireplaces, a theater, gym, sauna and other high-end features.

That is useful because it establishes something celebrity biographies often miss:

Peter Cook’s architectural work did not end when his marriage to Christie Brinkley ended.

It continued for years afterward and remains relevant to his present professional identity.

Peter Cook Is Also Working in Real Estate

Cook’s architectural knowledge eventually expanded into property sales.

His current Realtor.com profile lists him with Saunders & Associates, one of the firms active in Hamptons real estate.

An interesting 2025 example brings his personal and professional lives together.

Hamptons.com listed both Peter H. Cook and Alba Jancou as licensed real estate salespersons in connection with the Sag Harbor waterfront property designed by Cook.

So Cook and his current wife are not merely photographed together socially.

There is evidence of them working in the same real estate market as well.

How Did Peter Cook Meet Christie Brinkley?

Peter Cook and Christie Brinkley reportedly first crossed paths in 1979, when Cook was modeling.

They did not marry then.

Their paths later crossed again, and they were eventually reintroduced through a mutual friend before announcing their engagement in August 1996.

They married on September 21, 1996.

For Brinkley, it was her fourth marriage.

For Cook, it also marked the point when a Hamptons architect who was known primarily inside his industry entered mainstream celebrity coverage.

Peter Cook and Christie Brinkley’s Wedding

The couple married in the Hamptons in September 1996.

The marriage initially blended several worlds that naturally overlapped in that part of Long Island: fashion, entertainment, luxury real estate and architecture.

Cook continued his architectural work while Brinkley remained one of America’s most recognizable models.

They would remain married for roughly a decade before separating in 2006.

Their divorce was completed after a highly public legal battle in 2008.

Do Peter Cook and Christie Brinkley Have Children Together?

Peter and Christie have one biological child together:

Sailor Lee Brinkley Cook, born July 2, 1998.

Sailor later followed her mother into modeling and has appeared in fashion campaigns, magazines and Sports Illustrated. PEOPLE continues to identify Peter Cook as her father.

Cook also became the adoptive father of Christie’s son Jack Paris Brinkley-Cook.

Jack’s biological father is real estate developer Richard Taubman, Christie’s third husband, but Peter adopted him after marrying Christie.

That is why Jack carries the Brinkley-Cook surname even though Peter is not his biological father.

Who Is Sailor Brinkley Cook?

Sailor Brinkley Cook is Peter Cook and Christie Brinkley’s daughter.

She was born in 1998 and later entered modeling, eventually working in an industry that made her mother internationally famous.

Sailor has also appeared on Dancing with the Stars.

When Cook became engaged to Alba Jancou in 2019, PEOPLE reporting indicated that Sailor still had a close relationship with her father.

That is worth noting because divorce coverage often creates the impression that every relationship within a family necessarily follows the conflict between the parents.

Public reporting suggests Sailor maintained her own bond with Peter.

Did Peter Cook Adopt Jack Brinkley-Cook?

Yes.

Jack was born in 1995 to Christie Brinkley and her then-husband Richard Taubman.

After Christie married Peter Cook, Peter legally adopted Jack.

PEOPLE’s family profile specifically notes that Jack was later adopted by Cook, while contemporary reporting from the 2008 divorce trial also identified Jack as Cook’s adopted son.

This means Peter has two publicly documented children in the family sense:

• Sailor, his biological daughter;
• Jack, his adopted son.

Why Did Peter Cook and Christie Brinkley Divorce?

The marriage began unraveling publicly in 2006 after Brinkley learned that Cook had been having an affair with a teenage employee.

Cook later admitted the affair during the divorce proceedings.

Contemporary Associated Press coverage described the relationship as involving an 18-year-old woman Cook had met in Southampton.

The separation turned into a highly public custody and divorce case.

Much of what was normally private marital conflict was discussed openly in court and consequently became national entertainment news.

The proceedings finally ended in a settlement in July 2008.

What Happened in Peter Cook and Christie Brinkley’s Divorce Settlement?

The settlement gives us far more reliable financial information than the speculative net-worth articles written years later.

According to Associated Press reporting carried by CBS News, Christie Brinkley agreed to pay Cook $2.1 million.

Brinkley kept 18 disputed properties in the Hamptons, while she received custody of the children and Cook received parenting time under their agreement.

The rest of the settlement remained confidential.

That is important when discussing Cook’s finances today.

A known $2.1 million divorce payment from 2008 is not the same thing as knowing someone’s current net worth.

Christie Brinkley’s 2025 Memoir Brought the Marriage Back Into the News

Nearly two decades after their separation, Peter Cook’s marriage to Brinkley returned to entertainment headlines.

In 2025, Brinkley released her memoir Uptown Girl and revisited the circumstances in which she learned about Cook’s affair.

PEOPLE reported Brinkley’s account of discovering the relationship and the effect the breakup had on her and her family.

This is another reason searches for Peter Halsey Cook have remained active long after the divorce itself.

His name periodically returns whenever Brinkley discusses that chapter of her life.

But her memoir tells Brinkley’s experience of the marriage.

It should not replace the rest of Cook’s biography.

Who Did Peter Cook Marry After Christie Brinkley?

Cook later married Suzanne Shaw.

Contemporary Inside Edition coverage identified Shaw as his wife in 2012.

That relationship also eventually ended.

Later reporting states that Cook and Shaw divorced in 2014.

Cook’s next major publicly documented relationship was with Alba Jancou.

Who Is Peter Cook’s Current Wife?

Peter Halsey Cook’s current wife is Alba Jancou.

The couple were first publicly linked around 2018.

Cook proposed while they were traveling in Santorini, Greece, in September 2019. Their engagement became public the following month.

At the time, the engagement generated considerable coverage because of the large age difference between them.

That coverage now creates another SEO problem.

Many pages still describe Alba as Peter Cook’s fiancée.

That is outdated.

Are Peter Cook and Alba Jancou Married?

Yes.

Peter Cook and Alba Jancou married in September 2023 in Capri, Italy.

The wedding took place at Hotel Luna overlooking Capri’s famous Faraglioni rock formations.

The couple told PEOPLE that they deliberately chose a small, intimate celebration rather than a large traditional celebrity wedding.

As of 2026, Alba should therefore be described as Peter Cook’s wife, not his girlfriend or fiancée.

That correction alone makes a large number of older biographies inaccurate.

What Does Alba Jancou Do?

Recent public information links Alba with Hamptons real estate.

The 2025 Hamptons.com property feature identifies her as Alba Fleurette Jancou, a licensed real estate salesperson.

The same feature lists Peter H. Cook as a licensed salesperson and credits him as the architect of the property being marketed.

This gives the couple a clear professional overlap.

Cook brings decades of architectural and construction experience, while both are now publicly associated with real estate transactions in the Hamptons.

Where Does Peter Cook Live?

Peter Cook’s work remains centered around the Hamptons on Long Island, New York.

His architecture firm has long been associated with Water Mill, while his real estate work through Saunders & Associates covers communities across the East End.

It is better to describe his location broadly rather than turn private residential information into unnecessary biographical detail.

Professionally, though, the Hamptons remain central to his identity.

Is Peter Cook Still Close to the Brinkley Family?

Public information gives a clearer answer regarding his daughter Sailor than the entire extended Brinkley family.

In 2019, PEOPLE reporting described Sailor as having a very close relationship with her father, despite the long-running conflict surrounding her parents’ divorce.

Cook publicly supported Sailor during her appearance on Dancing with the Stars that same year.

Relationships inside blended families can change with time, so it would be inappropriate to pretend outsiders know every current dynamic.

What can be said is that Peter remained publicly connected with his children well after the divorce.

What Is Peter Halsey Cook’s Net Worth?

There is no reliable public figure for Peter Cook’s current personal net worth.

A number of celebrity websites claim approximately $20 million.

The problem is that they rarely show how that figure was calculated.

Cook has spent decades in high-end architecture.

He works in one of America’s most expensive residential property markets.

He has also worked in real estate sales.

And his 2008 divorce settlement included a documented $2.1 million payment.

Those facts make it reasonable to conclude that he has had a financially substantial career.

They do not allow an outsider to calculate his bank accounts, property equity, business ownership, investments, taxes, debt and other assets.

So the responsible answer is:

Peter Halsey Cook’s exact net worth is not publicly verified.

Is Peter Halsey Cook Related to British Architect Sir Peter Cook?

No evidence suggests they are the same person, and they should not be confused.

This is surprisingly important for search.

Sir Peter Cook, born in 1936, is the British architect associated with Archigram and the Royal Academy. He was knighted for services to architecture.

Peter Halsey Cook, born around 1959, is the American Hamptons architect and former husband of Christie Brinkley.

Because both are architects named Peter Cook, search results occasionally mix their professional information.

An article about Christie Brinkley’s ex-husband should not accidentally assign Archigram, British academic appointments or a knighthood to him.

Did Peter Halsey Cook Work as a Model?

Accounts of Peter and Christie’s early meeting state that Cook was modeling when they first met in 1979.

That appears to have been an early chapter rather than his long-term profession.

His sustained career became architecture.

Calling him an “actor” or entertainment professional because he later appeared in television coverage connected with his marriage would similarly misrepresent his main occupation.

His professional identity is much more accurately described as:

architect and real estate professional.

What Makes Peter Cook’s Architecture Distinct?

Cook has spent much of his career working in a place where clients often want two apparently contradictory things.

They want something new.

But they also want it to look as though it belongs in the Hamptons.

His own comments show that he is conscious of that tension.

In his Dan’s Papers interview, Cook spoke admiringly of historic East End windmills, the Montauk Association’s shingle-style houses, the Thomas Moran House and the way contemporary buildings can respond to the agricultural and coastal character of the area.

At the same time, recent work credited to him contains everything expected from modern luxury homes: large-scale entertaining spaces, elevators, theaters, spas, integrated technology and extensive indoor-outdoor living areas.

That mix of traditional setting and modern lifestyle may explain why he has remained professionally active in the region for so long.

What Is Peter Halsey Cook Doing Now?

As of 2026, Peter Cook appears to remain active in the Hamptons property industry.

Current professional records connect him with:

Peter Cook AIA, Architect for architectural work and Saunders & Associates for real estate.

A 2025 Hamptons.com feature credited him with designing a 2024 waterfront residence and listed both Peter and Alba in connection with the property’s real estate marketing.

Personally, he has been married to Alba Jancou since 2023.

Those are much more useful current facts than simply calling him “Christie Brinkley’s ex-husband.”

Why Is Peter Halsey Cook Famous?

There are really two answers.

Inside the Hamptons, Cook is known for architecture and real estate.

Outside it, he became famous largely because of Christie Brinkley.

The marriage connected his name with one of the world’s best-known supermodels.

The divorce made that connection even more visible.

Celebrity scandals tend to dominate Google because they generate far more articles than architecture projects do. That can make Cook’s professional career look like a footnote.

The public record shows otherwise.

His marriage lasted roughly a decade.

His architectural career has lasted considerably longer.

What Most Peter Halsey Cook Biographies Miss

The weakest articles about Cook tend to make one of two mistakes.

They either turn him entirely into a character from Christie Brinkley’s biography, or they fill the lack of personal information with unsupported numbers and details.

Both approaches miss the more interesting facts.

Cook’s current real estate career is still active.

His architecture firm remains connected with contemporary Hamptons projects.

His relationship with Alba Jancou did not stop at a 2019 engagement; they married in 2023.

Alba herself is now connected with Hamptons real estate.

And the exact birth date and personal net-worth numbers repeated by biography sites are less secure than they appear.

That gives a 2026 profile something useful to add rather than simply rewriting the same divorce story for the hundredth time.

Frequently Asked Questions About Peter Halsey Cook

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. His current professional profile lists him with Saunders & Associates.

How old is Peter Halsey Cook?

He is widely reported to have been born in 1959, making him approximately 67 in 2026. His exact birth date is less firmly documented.

Is Peter Halsey Cook an architect?

Yes. He owns Peter Cook AIA, Architect, a residential architecture practice associated with the Hamptons. Recent property coverage continues to credit him with new architectural work.

Is Peter Cook still working?

Yes. Current sources show him involved in both architecture and Hamptons real estate.

Who was Peter Cook married to?

His best-known former wife is Christie Brinkley, whom he married in 1996 and divorced in 2008. He later married Suzanne Shaw. His current wife is Alba Jancou.

Who is Peter Cook married to now?

Peter Cook is married to Alba Jancou. They married in Capri, Italy, in September 2023.

Is Alba Jancou still Peter Cook’s fiancée?

No. Articles calling Alba his fiancée are outdated. They married in 2023.

How many children does Peter Halsey Cook have?

Cook is the biological father of Sailor Brinkley Cook and the adoptive father of Jack Brinkley-Cook.

Who is Peter Cook’s daughter?

His daughter is model Sailor Brinkley Cook, whom he shares with Christie Brinkley. She was born in 1998.

Is Jack Brinkley-Cook Peter Cook’s biological son?

No. Jack’s biological father is Richard Taubman. Peter Cook later adopted him.

Why did Christie Brinkley and Peter Cook divorce?

Their marriage broke down after Brinkley discovered Cook’s affair with a teenage employee. The affair was discussed during their subsequent divorce proceedings.

What did Peter Cook receive in the divorce?

The 2008 settlement provided Cook with $2.1 million and parenting time, while Brinkley retained 18 disputed properties and received custody of the children.

What is Peter Halsey Cook’s net worth?

There is no independently verified current figure. The frequently repeated $20 million estimate should not be treated as confirmed financial information.

Where does Peter Cook work?

His professional life is centered on the Hamptons. His architecture practice has been associated with Water Mill, and he is currently listed with Saunders & Associates for real estate.

Is Peter Halsey Cook the famous British architect?

No. He should not be confused with Sir Peter Cook, the British architect and Archigram co-founder born in 1936.

Final Thoughts

For nearly twenty years, the internet has had an easy way to describe Peter Halsey Cook:

Christie Brinkley’s ex-husband.

It is accurate, but incomplete.

Cook’s marriage to Brinkley lasted from 1996 until their 2008 divorce. They share daughter Sailor, and Cook also adopted Brinkley’s son Jack. Their breakup became one of the most public celebrity divorce cases of that period.

But Cook did not disappear when the court coverage stopped.

He continued designing homes in the Hamptons. A 2024 Sag Harbor construction was still being promoted in 2025 as the work of Peter Cook AIA. He is also currently listed in Hamptons real estate with Saunders & Associates.

His personal life has moved forward too. The 2019 engagement to Alba Jancou that many biographies still describe as current ended in marriage in Capri in 2023.

That gives Peter Halsey Cook’s story a very different ending from the one found in older search results.

The celebrity marriage explains why millions of people recognize his name.

Architecture explains what he has actually spent most of his working life doing.

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