Real estate developers, builder and managers
Doing right by those who trust us isn’t a strategy — it’s the only way we know how to work.
BUILT TOGETHER
At Tandem, we build lasting partnerships based on shared vision and sustainable growth. We're experts at development, construction and property management, with a track record of delivering successful real estate projects.
The long game
We're long term thinkers. Timing the market is a coin flip, but patience is our edge. By leveraging HUD-backed, fixed-rate, non-recourse financing, we create lasting stability and reliable yield.
Deliberate Growth
We advance one to two projects at a time. For us, success is about doing things right – bringing steadiness and clarity to everything we do.
Off the Beaten Path
We focus on neighborhoods poised for growth — close to the energy of major hubs, yet with room to grow. By leveraging Opportunity Zone incentives, we align with long-term value creation.
Skin in the Game
We believe the best partnerships are built on shared commitment. That’s why we invest alongside our partners. We’re all working toward the same goals.
Avoid the Herd
When markets get overheated, we get cautious. When fear takes over, we lean in. Opportunity and value is rarely where everyone else is looking.
HOW WE DIFFER
These 3 principles show how we work and why our partners stick with us — a clear perspective that guides every decision we make.
Grit with Vision
We think big by staying small – nimble, precise and creative.
Radical Transparency
We share openly with our partners, ensuring alignment and trust from the very beginning.
Long-Term Alignment
We invest alongside our partners and focus on opportunities that stand the test of time.
What sets Tandem apartment isn't just our capabilities. It's how we show up and how we treat the people we work with. We bring a rare mix of humanity and clarity to every project – always keeping our investors, residents and community in view.
Our Chicago upbringing taught us to keep our heads down, solve problems fast, and avoid the theater that often surrounds real estate. We don’t posture — we perform. Every handshake, every hard conversation, every smart risk we take is part of building something that lasts.
ALL-IN OWNERSHIP
We practice All-in Ownership™. That means we take full accountability for every project we touch — no shortcuts, no excuses, just total commitment from start to finish.
At Tandem ownership is a mindset. We plan like developers, design like managers and act like long-term stakeholders. That means we anticipate problems, sweat the details early and align teams quickly – all, to protect value and avoid surprises.
Because we manage development, construction, and property operations under one roof, we’re able to move faster, communicate better, and stay focused on what matters most. We don't pass the buck — we stay in it. From the first sketch to the final walk-through (and beyond), All-In Ownership™ is what ensures our projects are smarter, smoother, and built to last.
HOW WE GOT HERE
1997
The Starting Line
Tandem Construction, Inc. is founded by Tony Andrews as a carpentry contracting company.
2003
An Airport Conversation
Old friends, Tony Andrews and Dimitri Nassis, reconnect at O’Hare Airport, sparking the idea of pursuing real estate opportunities together.
2004
First Steps, First Office
Dimitri Nassis joins Tandem full-time after leaving a career in options trading at the CBOE. That year, Tandem begins building single-family homes on Chicago’s North Side and establishes its first office at 1720 W School St in Roscoe Village.
2006
Breaking Ground
Tandem begins construction on Burling Place, its first multi-unit condominium project at 1725 N Burling St in Lincoln Park.
2008
A Penthouse & a Partner
Tandem completes Burling Place and meets its future primary financial backer, a milestone relationship that shapes the firm’s next stage of growth.
2008-13
Resilience in a Recession
Tandem navigates the Great Financial Crisis by executing third-party construction work, including the historic renovation of the Conway Mansion at Sacred Heart School and the expansion of the Union League Boys & Girls Club #1 in Pilsen.
2013-15
Jumping Back In
Tandem returns to single-family home development as markets recover, highlighted by the renovation and addition at 344 South in Glencoe and the Fulton Car Gallery.
2016-17
Going Multifamily
Tandem embarks on its first multifamily development, MODE Logan Square at 2501 W Armitage, in partnership with Chris Fifield of Fifield Cos., and completes construction and stabilization the following year.
2018-20
A Legacy Project Rises
Tandem develops Avenir in River West, a 196-unit, 23-story tower and the firm’s first high-rise project, undertaken as a legacy development.
2020-21
Pandemic. Progress.
Tandem begins construction on Avra West Loop in April 2020, delivering the 20-story, 198-unit project in the middle of the COVID-19 pandemic, successfully navigating zoning, financing, and construction complications amid supply chain disruptions.
2022
A Full Circle Moment
Tandem completes its first “round-trip” transaction with the sale of MODE Logan Square.
2022-23
New Heights, New Milestones
Tandem begins construction on Sage West Loop in May 2022, completing the 18-story, 198-unit project in 11 months. Sage also marks the firm’s first use of a HUD 221(d)(4) loan.
2024
Tampa, Here We Come
Tandem expands beyond Chicago with 2500 N Tampa, a Qualified Opportunity Zone multifamily and retail development in Tampa Heights, Florida.
1997
The Starting Line
Tandem Construction, Inc. is founded by Tony Andrews as a carpentry contracting company.
2003
An Airport Conversation
Old friends, Tony Andrews and Dimitri Nassis, reconnect at O’Hare Airport, sparking the idea of pursuing real estate opportunities together.
2004
First Steps, First Office
Dimitri Nassis joins Tandem full-time after leaving a career in options trading at the CBOE. That year, Tandem begins building single-family homes on Chicago’s North Side and establishes its first office at 1720 W School St in Roscoe Village.
2006
Breaking Ground
Tandem begins construction on Burling Place, its first multi-unit condominium project at 1725 N Burling St in Lincoln Park.
2008
A Penthouse & a Partner
Tandem completes Burling Place and meets its future primary financial backer, a milestone relationship that shapes the firm’s next stage of growth.
2008-13
Resilience in a Recession
Tandem navigates the Great Financial Crisis by executing third-party construction work, including the historic renovation of the Conway Mansion at Sacred Heart School and the expansion of the Union League Boys & Girls Club #1 in Pilsen.
2013-15
Jumping Back In
Tandem returns to single-family home development as markets recover, highlighted by the renovation and addition at 344 South in Glencoe and the Fulton Car Gallery.
2016-17
Going Multifamily
Tandem embarks on its first multifamily development, MODE Logan Square at 2501 W Armitage, in partnership with Chris Fifield of Fifield Cos., and completes construction and stabilization the following year.
2018-20
A Legacy Project Rises
Tandem develops Avenir in River West, a 196-unit, 23-story tower and the firm’s first high-rise project, undertaken as a legacy development.
2020-21
Pandemic. Progress.
Tandem begins construction on Avra West Loop in April 2020, delivering the 20-story, 198-unit project in the middle of the COVID-19 pandemic, successfully navigating zoning, financing, and construction complications amid supply chain disruptions.
2022
A Full Circle Moment
Tandem completes its first “round-trip” transaction with the sale of MODE Logan Square.
2022-23
New Heights, New Milestones
Tandem begins construction on Sage West Loop in May 2022, completing the 18-story, 198-unit project in 11 months. Sage also marks the firm’s first use of a HUD 221(d)(4) loan.
2024
Tampa, Here We Come
Tandem expands beyond Chicago with 2500 N Tampa, a Qualified Opportunity Zone multifamily and retail development in Tampa Heights, Florida.
