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The Kimsey: How a Former Scottsdale City Hall Anchors a $150M Old Town Hotel and Apartment Project

Old Town Scottsdale's long-debated Triangle Building finally breaks ground, bringing hundreds of new homes and a Marriott hotel to Indian School Road within two years.

Architectural rendering of The Kimsey mixed-use development featuring wood-clad residential towers above a glass-and-steel ground-floor pavilion, surrounded by landscaping with flowering plants and pedestrian figures, under a bright blue sky.
Architectural rendering of The Kimsey, the $150 million Old Town Scottsdale project pairing 190 apartments and a 168-room AC Hotel by Marriott around a preserved Ralph Haver-designed building on East Indian School Road. (Project rendering)

The short version

  • Mill Creek Residential paid $17.6 million for the 2.03-acre apartment site at 7120 E. Indian School Road.
  • The Kimsey pairs 190 apartments and a 168-room AC Hotel by Marriott in a $150 million project.
  • The historic Triangle Building—2 stories, 16,000 sq ft—becomes a leasing office, gym, and resident lounge.
  • Ralph Haver designed 15 Scottsdale projects in the early 1950s; 5 have already been demolished.
  • Groundbreaking happened October 2026; construction is expected to take about 2 years.

The Kimsey is a $150 million mixed-use development now under construction in Old Town Scottsdale, combining up to 190 apartments and a 168-room AC Hotel by Marriott around a mid-century building that once housed Scottsdale’s City Hall. Ground broke in October 2026 on the 7100 block of East Indian School Road, between Scottsdale Road and Marshall Way.

If you live or work near Indian School Road, here is what changes for you

The most immediate thing you will notice is construction. The project sits between Scottsdale Road and Marshall Way on East Indian School Road, and work is expected to run about two years. That means roughly two years of cranes, trucks, and lane slowdowns near one of Old Town’s busier corridors.

When it is done, your neighborhood gets a six-story apartment building with rooftop patios on the top floor, a seven-story hotel two blocks west, and a fully restored 1960s building repurposed as a community space. The old Triangle Building—which served as Scottsdale’s leased City Hall from 1963 to 1968—stays standing. Its facade is kept intact and the structure gets repairs, not demolition.

For anyone who has watched five other Ralph Haver buildings in Scottsdale disappear over the decades, that is the real news. The Kimsey project finally stops the clock on this one.

What is the Triangle Building, and why does it matter?

The Triangle Building at 7120 E. Indian School Road is a two-story, 16,000-square-foot structure designed by Arizona architect Ralph Haver. Its exact construction date is contested: two official City of Scottsdale documents—the city’s Mid-Century Modern Architectural Tour guide and a 2021 City Council transcript—both date it to 1962. Other sources, including the scottsdale.org news archive and architect Doug Sydnor’s project page, cite 1961. Wikipedia lists the design year as 1960. The two city records support 1962 as the completion year, but the date remains disputed.

What is not disputed is its history. The building served as Scottsdale’s leased City Hall from 1963 until the current City Hall opened in 1968. The Kimsey name itself carries civic weight: the family patriarch, Mort Kimsey, served on Scottsdale’s first town council and became the town’s second mayor in 1958.

Black-and-white aerial photograph of the Triangle Building in the 1960s, surrounded by vintage automobiles and palm trees on a multi-lane road.

The Triangle Building as it looked in the 1960s, surrounded by mid-century automobiles in its parking lot. (Scottsdale Historical Society)

Why preservationists fought so hard—and why five Haver buildings are already gone

Ralph Haver designed 15 projects in Scottsdale in the early 1950s. Five of those have since been demolished. That track record is why the Triangle Building became a line in the sand for preservationists. Each lost building narrows what is left of Scottsdale’s mid-century modern architectural record, and with only ten or so Haver projects remaining in the city, every one that survives carries more weight.

A low-rise mid-century commercial strip building with covered colonnaded walkway, seen from a parking lot with a palm tree in the foreground.

The Triangle Building as it appeared in 2020, still showing its characteristic covered colonnade and mid-century proportions at 7120 E. Indian School Road. (Haver King 301 archive)

The full approval gauntlet: three boards and a city council vote

This project did not sail through city hall. It cleared four separate decision points before breaking ground.

Scottsdale’s Development Review Board approved it unanimously. The Historic Preservation Commission also approved it unanimously. The Planning Commission cleared it on a 5-1 vote. Then the project went to City Council. Each of those votes required the developer to make design concessions—changes that kept the historic structure intact while allowing the larger buildings to rise around it.

Who is building what at the Kimsey

The project has two distinct pieces, each with its own developer.

PEG Development of Provo, Utah, worked on the original historic building component alongside Houston-based Ryden Architects, the project’s designer. Mill Creek Residential then purchased the 2.03-acre apartment site from PEG Companies for $17.6 million. Tyler Wilson, Mill Creek’s senior managing director of construction, said his firm “fell in love with the project immediately.” Mill Creek’s apartment project is being done in partnership with Origin Investments and is formally named Modera Old Town.

The hotel sits on a roughly 3.87-acre site west of Scottsdale Road, between Indian School Road and Third Avenue. That is the seven-story, 168-room AC Hotel by Marriott.

Architectural rendering of a multi-story mixed-use brick building at the intersection of Indian School Road and Goldwater in Old Town Scottsdale, with ground-floor retail, upper-floor units with balconies, pedestrians, and street traffic.

A street-level rendering of the Kimsey development at Indian School Road in Old Town Scottsdale, showing the multi-story facade with ground-floor retail and upper balconies. (Project rendering)

What the historic building becomes

The Triangle Building will not become apartments or retail. Instead, it will serve residents of the Modera Old Town apartments as a leasing office, a gym, and a resident lounge. The facade is retained and the building gets structural repairs. Nothing gets torn down.

Modera Old Town will hold 73 one-bedroom units, 101 two-bedroom units, and 16 three-bedroom units, averaging 1,076 square feet each. Top-floor units will have rooftop patios. The building rises six stories.

The two-story Triangle Building at 7120 E. Indian School Road today, with covered colonnade, large glass windows, palm trees, and parked cars, showing signage for Avintiv Media and Michael V Salon.

The Triangle Building at 7120 E. Indian School Road as it stands today, still in use before its conversion into the Modera Old Town resident amenity space. (Street view)

The public art requirement: matching flowers and fire

The project carries a public art obligation. The hotel already has an art installation in place: a sculpted shade structure designed to resemble flowers and fire, named “Luminal,” by Brian Brush of Bozeman, Montana. The apartment side is required to install a complementary piece. That work, named “Kimsey Grove,” is by Jason Kelly Johnson and Nataly Gattegno of Futureforms in San Francisco, California, per consulting architect Doug Sydnor’s project page.

Construction is underway—here is when things resolve

Groundbreaking happened in October 2026. The apartment construction timeline runs about two years, which puts a completion target around late 2028 if work stays on schedule. The hotel component is already further along—its sculpted shade structure is in place.

For residents and visitors along East Indian School Road between Scottsdale Road and Marshall Way, expect active construction through most of that period. The Modera Old Town apartment project represents Mill Creek Residential’s 12th opportunity zone development and Origin Investments’ 22nd. Mill Creek’s opportunity zone portfolio totals more than 3,800 homes across all projects.

Aerial drone photograph of an active construction site in Scottsdale with a red tower crane, partially erected structure, dirt lots, and dry brown mountains in the background.

Aerial view of The Kimsey construction site underway in Old Town Scottsdale, with a tower crane visible above the growing structure. (Project site photo)

Common questions

What is The Kimsey in Old Town Scottsdale?

The Kimsey is a $150 million mixed-use project at the 7100 block of East Indian School Road in Old Town Scottsdale. It pairs up to 190 apartments (Modera Old Town) with a 168-room AC Hotel by Marriott, built around the preserved mid-century Triangle Building designed by Ralph Haver.

Who is building the Kimsey apartments?

Mill Creek Residential is developing the apartment portion, called Modera Old Town, in partnership with Origin Investments. Mill Creek purchased the 2.03-acre site from PEG Companies for $17.6 million. Ryden Architects of Houston designed the project.

How many apartments will the Kimsey have?

Modera Old Town is zoned for up to 190 units. The breakdown is 73 one-bedroom, 101 two-bedroom, and 16 three-bedroom homes, averaging 1,076 square feet per unit. Top-floor units will have rooftop patios.

What is the Triangle Building and why is it being saved?

The Triangle Building is a two-story, 16,000-square-foot structure at 7120 E. Indian School Road designed by Arizona architect Ralph Haver. It served as Scottsdale’s leased City Hall from 1963 to 1968. Preservationists pushed to save it because five of Haver’s 15 Scottsdale-area projects have already been demolished.

What will the historic Kimsey building be used for?

The Triangle Building will be fully reused as a leasing office, gym, and resident lounge for the Modera Old Town apartments. Its facade will be kept intact and the structure will be repaired rather than demolished.

Is the AC Hotel by Marriott in Old Town Scottsdale open?

The AC Hotel by Marriott at The Kimsey is a seven-story, 168-room hotel on a roughly 3.87-acre site west of Scottsdale Road between Indian School Road and Third Avenue. Its public art installation is already in place, but full opening status has not been confirmed in available sources.

How did the Kimsey project get approved by the city?

The project cleared four approval steps: unanimous votes from Scottsdale’s Development Review Board and Historic Preservation Commission, a 5-1 vote from the Planning Commission, and then City Council approval. The developer agreed to design concessions at each stage to protect the historic building.

What is the public art installation at the Kimsey?

The hotel side already has a piece called “Luminal,” a sculpted shade structure resembling flowers and fire, by Brian Brush of Bozeman, Montana. The apartment side is required to install a complementary work called “Kimsey Grove,” by Jason Kelly Johnson and Nataly Gattegno of Futureforms in San Francisco.

Aaron Dotterer
Aaron Dotterer
REALTOR® · Dott Real Estate Group, Real Broker

Firefighter-EMT and licensed REALTOR® living in Eastmark. I cover what actually changes for residents when the Valley builds.

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