Marielle on the Park: What It Means for Mary Bartelme Park and West Loop Property ValueThe Short Answer
Marielle on the Park is a 70-residence luxury condominium tower approved for 23 S. Sangamon Street, directly across from Mary Bartelme Park in Chicago's West Loop. Chicago City Council approved it in late September 2026. The park will not get the field house promised in earlier plans; instead it gains free public restrooms and equipment storage. For nearby owners, a boutique for-sale building with ground-floor dining is generally a positive signal for values, though some park-facing views will change.
Mary Bartelme Park is one of the most loved two-and-a-half acres in the West Loop. So when a 300-foot tower is approved across the street, my clients ask two questions right away: what happens to the park, and what happens to my home's value? Here is what we know as of October 2026, and how I'm advising buyers and sellers around the park.
What Is Marielle on the Park?
Marielle on the Park is a boutique luxury condo tower by Chicago developer Fern Hill, designed by Eckenhoff Saunders Architects. It sits at Sangamon and Monroe, overlooking Mary Bartelme Park, a short walk from Fulton Market's restaurant row.
Detail | What's planned |
|---|---|
Address | 23 S. Sangamon St., Chicago, IL 60607 |
Developer / architect | Fern Hill / Eckenhoff Saunders |
Height | About 300 feet (reported as 24 to 26 stories) |
Residences | 70 condominiums, every one with a private terrace |
Floor layouts | Four homes per floor at the lower levels, then three per floor, then half-floor homes, two duplexes, and a full-floor penthouse |
Parking | 71 spaces in the podium |
Amenities | Fitness center, lounge, kids' room, outdoor pool deck and dog run overlooking the park, resident wine club and piano bar |
Ground floor | Corner cafe, restaurant, lobby, bike room, public park restrooms and park storage |
Project cost | About $150 million |
Status | City Council approved (Sept. 2026); presales underway, with construction tied to a presale threshold |
The tiered design steps back as it rises, which is what creates the large terraces on the upper homes. Fern Hill's sales center is at 14 N. Sangamon St.
Sources: Urbanize Chicago, Chicago YIMBY, Marielle on the Park
How the Project Evolved: Five Years, Four Designs
The site at 23 S. Sangamon has been through four versions since 2021, and the final plan is smaller and more ownership-focused than the middle iterations.
Year | Proposal |
|---|---|
2026 | ~300-ft condo tower, 70 homes; field house dropped for public restrooms and park storage — approved |
2025 | 27-story mix of condos and apartments over a community center |
2024 | 33-story rental building with a community center and field house for the park |
2021 | 19-story condominium tower, approved by the city |
The shift back to for-sale housing matters. Most recent West Loop towers have been rentals. A 70-home condo building puts long-term owners, not a rotating tenant base, across from the park. Parking also dropped from 115 spaces to 71, which means less garage traffic on Sangamon.
To meet Chicago's 20% affordable housing requirement, Fern Hill plans to build affordable for-sale homes off-site with the Pilsen Housing Cooperative rather than inside the tower.
Source: Urbanize Chicago
How Marielle on the Park Will Impact Mary Bartelme Park
The park keeps its footprint and design; what changes is the edge around it. Here is the honest scorecard.
What the park gains
- Public restrooms. City data does not list restrooms at Bartelme today. Free public restrooms in Marielle's ground floor solve one of the park's most common complaints from parents and dog owners.
- Equipment storage. A dedicated storage room makes it easier for the Park District and partners to run programming like fitness classes and farmers market events.
- A livelier corner. A cafe and restaurant on Monroe add coffee-and-stroller traffic and more eyes on the park after dark.
What the park does not get
- The field house. The 2024 and 2025 plans included a community center at the base. Per a statement from Alderman Conway, the developer and the Park District dropped it over market changes and concerns that more programming would overload an already busy park.
What to watch
- Use levels. Seventy new households, many likely with kids or dogs, will add users to a roughly 2.7-acre park that is already heavily used on weekends.
- Construction. Expect a multi-year build with staging on Sangamon and Monroe once presales hit their threshold.
- Light and shadow. A ~300-foot tower will cast afternoon and evening shadow in some seasons. A sun study from the developer would settle how much reaches the lawn and playground.
Worth remembering: Bartelme itself was built in 2010 on the site of a former infirmary, in direct response to residents demanding green space as the West Loop grew. It was named for Mary Bartelme, Illinois' first woman judge. Development and the park have grown up together.
Sources: Urbanize Chicago, Chicago Park District, West Loop Vibe
How Marielle on the Park Will Impact West Loop Property Values
On balance, I expect Marielle to support values around Bartelme Park, with the biggest lift for owners of comparable condos and the main risk for units whose views face the tower.
1. It raises the price ceiling, and comps follow. New luxury condos price above resale, and those sales become reference points for appraisers and buyers. West Loop's top end has climbed steadily:
Year | Building | Record penthouse price |
|---|---|---|
2026 (under contract) | One Fulton Bond, 224 N. Elizabeth | $8.5 million |
2024 | Embry West Loop, 19 N. May | $7.56 million |
2017 | Hayden West Loop, 1109 W. Washington | About $4 million |
Marielle's full-floor penthouse and duplexes will compete in that tier, and park frontage is something Fulton Market towers can't offer.
2. Ownership beats rental for neighborhood stability. A 70-home condo building adds long-term owners who invest in the block. Buyers comparing similar West Loop buildings tend to pay more for streets anchored by owner-occupied housing.
3. Retail adds walkability. A cafe and restaurant at Sangamon and Monroe extend Fulton Market energy south toward the park, a block that has been mostly residential.
4. Limited supply keeps resale competitive. Seventy homes is a small addition. And because presales must hit a threshold before construction, delivery is likely several years out. In the meantime, buyers who want a park-adjacent home now still turn to existing buildings.
5. The real risk is views. Units with direct sightlines across Sangamon and Monroe could lose sky or park views, and an unobstructed view is often the premium in a park-side listing. If your home faces the site, price and market it based on what will remain, not what you see today.
Sources: Crain's Chicago Business, The Real Deal, Chicago Tribune
What This Means for Buyers and Sellers Near the Park
If you're selling near Bartelme Park: The 2026 to 2028 window may be your sweet spot. The approval and Marielle's marketing put a spotlight on the park, while new inventory is still years from delivery. Lead with what Marielle cannot offer: immediate move-in, established HOA reserves, and pricing below new construction.
If you're buying near Bartelme Park: Ask which direction the unit faces before falling for the view. Compare a Marielle presale (custom finishes, newest amenities, longer wait, deposit at risk to timeline) with resale in an established building (known costs, move in now, room to negotiate).
If you're considering a Marielle presale: Read the purchase agreement closely for deposit terms, the presale threshold, and what happens if construction is delayed. Have your own agent represent you; the developer's sales team represents the developer.
Frequently Asked Questions
Where is Marielle on the Park? Marielle on the Park is at 23 S. Sangamon St. in Chicago's West Loop, at Sangamon and Monroe, across the street from Mary Bartelme Park.
Is Marielle on the Park approved? Yes. The Chicago Plan Commission approved it in August 2026, and Chicago City Council gave final approval in late September 2026.
How many condos are in Marielle on the Park? The building is planned for 70 condominium residences, each with a private terrace, ranging from four homes per floor to a full-floor penthouse.
Who is developing Marielle on the Park? Chicago developer Fern Hill is building it, with design by Eckenhoff Saunders Architects. The project is estimated at about $150 million.
Will Mary Bartelme Park get a field house? No. Earlier plans included a community center, but it was dropped. The building will instead provide free public restrooms and a park storage room.
When will Marielle on the Park be completed? No completion date has been announced. Presales are underway, and construction begins once a set share of homes is presold.
Will Marielle on the Park raise home values near Mary Bartelme Park? It is likely to support values by setting new high-end comps, adding retail, and bringing owner-occupants. Units whose views face the tower carry the most risk.
How big is Mary Bartelme Park? The Chicago Park District lists Mary Bartelme Park at about 2.7 acres, with a playground, sunken dog park, fountain plaza, open lawn, and viewing hill.
Thinking About Buying or Selling Near Bartelme Park?
I track every development around Mary Bartelme Park and Fulton Market because it moves my clients' numbers. If you own near the park and want to know what Marielle means for your home specifically, I'm happy to run a no-pressure valuation that accounts for the view, the timeline, and the comps it will create.
Stephanie Turner · CS Collective at Jameson Sotheby's International Realty West Loop, Fulton Market, Bucktown, Lincoln Park and Gold Coast specialist with 10 years in the Chicago market. 312.523.3131 · [email protected] · stephanieturnerchicago.com
Project details reflect public filings and reporting as of October 2026 and may change as Marielle on the Park moves through presales and construction.
