Before a 141-acre proposal influences an offer, sort every feature into three buckets: confirmed, proposed, and unknown. Then check the parcel against Westfield’s site plan, drive the area at real commute hours, and treat the grocery, offices, and restaurants as possibilities rather than amenities you’re buying.

What is planned at 161st Street and the Monon Trail?

The Monon Mixed-Use Plans at 161st Street are a proposed development in Westfield, not a finished project. The reported concept covers about 141 acres with hundreds of residences, roughly 250,000 square feet of office space, and more than 175,000 square feet of retail, restaurants, entertainment, and a grocery store, according to the Indianapolis Business Journal. Those are proposed program elements, so nothing in them is a guarantee that every use gets built.

Key Takeaways

• The 161st and Monon project is tentatively planned for about 141 acres in Westfield, not Carmel, and the reported mix of residences, offices, retail, and a grocery is a proposal rather than a commitment.
• The reported development value of about $250 million does not establish that the project is funded, approved in final form, or under construction.
• No signed grocer, opening date, or store size has been identified, so grocery access should not be treated as an existing or assured amenity.
• The Monon tunnel at 161st Street is a separate public project that began March 2, 2026, with completion expected in December 2026, so today’s detours and lane restrictions are temporary.
• The most important check is where your specific parcel sits relative to the project boundary, not how close the home is to the Monon Trail.

I live in Chatham Hills, so I watch Westfield’s growth corridors closely, and this one gets a lot of questions. Buyers see a big number, a grocery store, and a trail, and they start pricing in the future. My job is to help you slow down and separate what’s on paper from what’s in your imagination.

What do the Monon Mixed-Use Plans actually confirm, and what is still assumption?

The plans confirm a concept and a developer, not a construction schedule. The proposal is associated with Jaffe Companies and has been described as a trail-oriented mixed-use planned unit development, per a summary of Westfield’s planning discussion. That discussion included office buildings, a parking structure, retail, and townhomes, and city staff and council asked for more detail on phasing, Monon Trail buffering, infrastructure, and right-of-way coordination.

That last sentence matters. When a city is still asking for detail on phasing and buffering, the final shape of the project is not settled.

How should you sort what you’ve read?

Here’s the framework I use with my clients. Every claim about this project lands in one of these buckets.

Item	What the available sources say	How to treat it
About 141 acres with hundreds of residences	Reported as the tentative concept	Proposed, final home count not verified
About 250,000 sq ft of office	Reported as part of the concept	Proposed, no tenant roster verified
175,000+ sq ft of retail, restaurants, entertainment, and grocery	Reported as part of the concept	Proposed, no named grocer
About $250 million in value	Reported figure, per IBJ’s Westfield coverage	Not established as funded or committed
Monon tunnel at 161st Street	City project, construction began March 2, 2026, completion expected December 2026	Confirmed public project, separate from the private proposal
Final approval, first occupancy, grocery opening	No verified schedule found	Unconfirmed until a city document, permit, or signed tenant announcement says otherwise

Is the grocery store confirmed?

No. The reporting says a grocery store is part of the current plan, but it does not identify a signed grocer, an opening date, a store size, or a guaranteed construction phase. If a listing or a neighbor tells you a specific grocer is coming, ask for the source. Without a signed tenant announcement, it’s a hope, and I wouldn’t pay for a hope.

Does the $250 million figure mean it’s happening?

A reported value is not a funding commitment. There’s a real difference between a developer’s concept, land-use approval, financing, construction contracts, and completed occupancy. Each is a separate milestone, and a project can stall at any of them. Treat the dollar figure as a sense of scale, not a start date.

Where does this fit in Westfield’s bigger picture?

The proposal sits inside a real planning theme. Westfield’s long-range planning goals identify the Monon and Midland Trace corridors as locations for trail-oriented development nodes. That supports the idea that mixed-use activity along the Monon fits the city’s direction. It does not approve or guarantee this project’s specific uses. If you want to see how I read another Westfield planned development, I broke one down in what Westfield buyers should know about the Town West Village PUD.

How will 2026 construction affect access near 161st Street and the Monon?

Expect temporary construction conditions, and don’t confuse them with the long-term picture. Westfield reported that the Monon tunnel at 161st Street began construction on March 2, 2026, with completion expected in December 2026. The city’s listed Monon detour uses 156th Street, Oak Ridge Road, and 169th Street.

Is 161st Street closing?

The city said in an April 2026 update that tunnel work would continue through the end of 2026 and that a full closure of 161st Street was not anticipated, though lane restrictions could occur. Check the city’s construction page for the latest status before any showing, because conditions change.

What about the 161st Street trail work?

Westfield’s project page also lists a 161st Street trail project between Oak Road and Carey Road. It began in fall 2025 and was expected to resume in late April 2026, with about 30 days of work remaining when the page was updated in September 2026. That can affect short-term trail connectivity near the broader corridor.

How should you test the drive?

Don’t judge a home by one afternoon visit during a detour. Here’s what I tell buyers to do:

• Drive your likely routes at weekday peak times and again on a weekend.
• Run the route to work, to the highway, and to the places you go every week.
• Do it once during construction and ask yourself what you’d expect once the tunnel is finished.
• Notice noise and trail activity at different hours, then revisit once the tunnel work wraps.

Today’s detours are not permanent traffic conditions. Whether the development adds congestion later depends on how much gets built and how access is configured, and neither is verified yet.

How do you check whether a home is inside, next to, or just near the project?

Compare the parcel’s address and plat against the latest Westfield site plan or planned unit development materials. Distance to the Monon Trail tells you very little. What matters is the actual project boundary, the access points, and which phase is nearest to the home.

A home advertised as “near Carmel” can still be subject to Westfield zoning, Westfield infrastructure schedules, and Westfield decisions. The Monon connects Westfield, Carmel, and Indianapolis, so the trail can make a listing sound like it belongs to a different town than the one that governs it.

What should you ask for?

1. The latest site plan or PUD materials from Westfield’s planning staff, not a developer rendering.
2. The subdivision plat for the home you’re considering, so you can see lot lines, easements, and access.
3. Phasing information, so you know which parts of the project would be built first, if any.
4. Any buffering plans along the Monon Trail, since the city asked for more detail on that.
5. Infrastructure and right-of-way status, because those items were still being coordinated in the reported discussions.

Those last three are practical due-diligence items. Until they’re settled in public approvals and construction documents, nobody can reliably say how much trail-facing activity, how long a construction period, or what access layout a nearby owner will live with.

How should the project affect your offer?

Let it inform your decision, but don’t let it set your price. I’d value the home on what it is today: its condition, finishes, lot, and location. My construction background helps here, because I look at build quality and long-term resale positioning, not just a headline. A proposed grocery or restaurant row might add convenience later, or it might not arrive on the timeline you’re hoping for. If you’re weighing a move-up purchase in this part of Hamilton County, my read on Westfield and Carmel growth and equity shows how I think about development and value together.

Every property is different, and the only way to know how this project touches yours is to look at the parcel, the plat, and the plan side by side. That’s the kind of review I walk my clients through before we write an offer. The Monon Mixed-Use Plans may bring real change to this corridor, but you should be buying the home in front of you.

If you’d like to know how other buyers have felt working with me, you can read my Google reviews.

FAQ

What exactly is planned for the 161 and Monon development in Westfield?

The reported concept is a trail-oriented mixed-use development on about 141 acres near East 161st Street and the Monon Trail. It includes hundreds of residences, about 250,000 square feet of office space, and more than 175,000 square feet of retail, restaurants, entertainment, and a grocery store. These are proposed uses, and the final number of homes, building heights, and tenant roster are not verified.

Is the grocery store at 161 and Monon confirmed, and which grocer is involved?

The grocery is part of the proposed plan, but no signed grocer, opening date, or store size has been identified in the available reporting. Don’t treat it as a guaranteed amenity when comparing homes. Look for a signed tenant announcement or a city approval document before giving it any weight.

When will the 161 and Monon project be built or open?

There’s no verified schedule for final approval, infrastructure installation, first occupancy, completion, or a grocery opening. Treat all of those dates as unconfirmed until a city approval document, developer filing, construction permit, or signed tenant announcement says otherwise. I can help you track where the project stands before you commit.

Will the Monon Trail tunnel construction affect driving near 161st Street?

Yes, it can, but the effect is temporary. The tunnel began construction on March 2, 2026, with completion expected in December 2026, and the city has listed a detour using 156th Street, Oak Ridge Road, and 169th Street. Westfield said a full closure of 161st Street was not anticipated, though lane restrictions could occur.

Is 161 and Monon in Carmel or Westfield?

The project is in Westfield, near East 161st Street and the Monon Trail. The Monon links Westfield, Carmel, and Indianapolis, so a listing described as “near Carmel” may still fall under Westfield zoning, infrastructure schedules, and municipal decisions. Always confirm which municipality governs the specific address.

The bottom line on the Monon Mixed-Use Plans

Treat the proposal as context, not a promise: confirm what’s approved, confirm where your parcel sits, and test the drive in 2026 conditions and beyond. If you’re looking at homes near the 161st Street and Monon corridor, I’ll pull the planning materials, check the plat against the plan, and tell you plainly what I find. Call me at 260-446-7771 to schedule a consultation before you make an offer.

About Forde Ness

Forde Ness is a REALTOR® with Homes With Steill | Berkshire Hathaway HomeServices Indiana Realty, specializing in residential real estate across Hamilton County, primarily Westfield, Carmel, and Fishers, with additional experience in Zionsville and Indianapolis. In seven years he has closed more than 250 transactions and over $150 million in total sales volume, with a growing focus on luxury and move-up buyers in communities like Chatham Hills, where he also lives. Before residential sales, Forde worked in new construction and grew up around home renovation, giving him a working knowledge of construction quality, finish value, and long-term resale positioning. He is a Purdue University graduate, is active locally with Penrod and Little Sisters of the Poor, and has earned more than 40 five-star client reviews.

Berkshire Hathaway HomeServices · 2604467771

Equal Housing Opportunity. This article is general information, not legal, tax, or financial advice. Confirm your own numbers and details with your closing agent, tax advisor, or lender.