7 Big Openings Coming to the Treasure Valley by Summer 2027
Costco, a Ten Mile Target, a new downtown Y and SH-16. Seven confirmed Treasure Valley openings by summer 2027, with dates and what they change.


The new Costco on the Meridian and Kuna line opens Nov. 5, and it's the first of several big openings with real dates on the calendar between now and summer 2027. I left off anything that only has a "someday" timeline. Every item below has an opening date or month announced by the business, the developer, or ITD.
If you're deciding where to buy in the valley, this is worth a look. New grocery, retail, jobs and a new highway change how a part of town works day to day. I've added a home search for each area so you can see what's for sale nearby. (One already happened, by the way. Ada County's Park at Expo Idaho in Garden City opened Oct. 23, so it isn't on the countdown.)
A quick note on dates: they're the latest ones the business, developer or agency has announced, and construction schedules can move. I'll update this post if they do.
1. South Meridian Costco
What it is: A new Costco warehouse with a gas station and more than 900 parking spaces.
Where: South Meridian near Meridian Road and Lake Hazel Road, right on the Meridian and Kuna line.
Confirmed date: Thursday, Nov. 5, 2026. Doors open at 8 a.m., right after a 7:30 a.m. ribbon cutting (Meridian and Kuna Chambers of Commerce).
Why it matters for living there: Until now, a lot of south Meridian and Kuna shoppers have driven up to the Boise Costco. One Kuna resident told KIVI that's about 10 miles each way. Having one on this side of the valley cuts that trip down. Expect heavier traffic on Meridian Road and Lake Hazel for the first few weeks. ACHD says Costco installed two new traffic signals at the entrances.

If you're looking south of I-84, the big-box run just got a lot shorter. Skip opening week if you don't like crowds.
2. Downtown Boise YMCA
What it is: The new CapEd Downtown Boise YMCA. It's about 109,000 square feet, with an aquatics center, eight fitness studios, courts, an indoor track and space for St. Luke's and CapEd inside the building.
Where: Downtown Boise on State Street, across the street from the current Y.
Confirmed date: Saturday, Dec. 12, 2026, with a ribbon cutting at 10 a.m. (Treasure Valley Family YMCA). The current building closes Dec. 7 through 11 so staff can move over.
Why it matters for living there: The Y says the new building can handle about 16,000 members and 100,000 visits a month, up from about 11,500 members today. If you live downtown, in the North End or nearby, that's a lot more pool and gym capacity within a short drive or bike ride. The Y's parking garage and early education center are a separate phase planned for late 2027.

More capacity for a gym and pool that has been packed for years. Plan on temporary parking lots for the first year.
3. Fred Meyer in Caldwell
What it is: A 155,000-square-foot Fred Meyer with groceries, home goods, electronics, apparel, a fuel center, a drive-up pharmacy and a Starbucks. The Idaho Press reported it's Fred Meyer's first new store in nine years.
Where: North Caldwell along US-20/26 near Middleton Road.
Confirmed date: Late January 2027, according to Fred Meyer's October announcement as reported by KBOI 2News.
Why it matters for living there: KIVI reported that a big part of Caldwell is still a long drive from a full grocery store, and the city's population has grown nearly 30% since 2020, per Community Planning Association of Southwest Idaho (COMPASS) data. This store fills a gap on the north side of town. It's also expected to bring about 250 jobs, according to the Idaho Press.

If you've looked at north Caldwell and the grocery drive held you back, that changes this winter.
Find what's near the next big opening
Pick the opening that matters to you, draw your search around it, and see what's for sale right now.
4. The Village at Meridian Expansion, Final Round
What it is: The last phase of The Village at Meridian's expansion. It adds six new buildings and close to 80,000 square feet, all of it leased. Names CenterCal has announced for the expansion include The Capital Grille, Culinary Dropout, Williams Sonoma and Pottery Barn, plus first-in-Idaho spots like 7th Avenue.
Where: The Village at Meridian, Eagle Road and Fairview Avenue.
Confirmed date: The developer says full Phase II completion is expected in February 2027 (CenterCal Properties). The Village's property manager told KIVI the final round opens in the first quarter of 2027. The first wave of stores already opened Oct. 9 to 11.
Why it matters for living there: The Village is already Meridian's main spot for dining out and shopping. This makes it bigger and adds a few names that are new to Idaho. It also means more weekend traffic around Eagle and Fairview.

Central Meridian keeps adding places to go. Factor the Eagle Road traffic into any commute you test.
5. A New Target at The District at Ten Mile
What it is: A new Target that anchors The District at Ten Mile. The developer says a lot of the first-phase retail and restaurants will open at the same time as Target, with names like Panera Bread and Over Easy already announced.
Where: The I-84 and Ten Mile Road interchange in Meridian.
Confirmed date: May 2027. "Target will open May of 2027," Ahlquist's chief leasing officer told KIVI.
Why it matters for living there: West Meridian and the Ten Mile area have filled in fast, and most of the big retail has been east on Eagle Road. This puts a Target and a new cluster of restaurants right off the freeway on the west side. Ten Mile Road traffic is the trade-off, and neighbors are already watching it.

If you're shopping west Meridian, everyday errands are about to move closer.
6. SEL Manufacturing Plant in Nampa
What it is: Schweitzer Engineering Laboratories is putting more than $150 million into a 103,000-square-foot manufacturing facility. SEL makes equipment that protects and controls power grids.
Where: Nampa's Sugar District, a few blocks east of the I-84 Garrity Boulevard interchange, in the former Macy's building.
Confirmed date: The company told the Idaho Press it expects the plant to be operational in the first half of 2027. SEL's own release says 2027.
Why it matters for living there: SEL says it will start with about 250 manufacturing jobs, with a $26 starting wage plus shift differentials. That's a sizable new employer in Nampa, and it means more people working on the west side of the valley instead of driving to Boise every day.

New jobs in Nampa mean a shorter commute for more people who already live in Canyon County.
7. SH-16 Extension, I-84 to SH-44
What it is: A new limited-access highway, two lanes each way, connecting I-84 to SH-44. ITD calls it the area's first new freeway in over four decades. It has interchanges at I-84, Franklin Road, Ustick Road, US-20/26 (Chinden) and SH-44 (State Street).
Where: The line between west Meridian and east Nampa, running north toward Star and Eagle.
Confirmed date: ITD's October 2026 project update says the corridor is expected to open in mid-2027 and is about 60% complete. ITD notes schedules can change.
Why it matters for living there: Right now, getting from Star, north Meridian or the Eagle area to I-84 means surface roads like Ten Mile, Linder or McDermott. Once SH-16 opens, there's a direct freeway route. That could change commute math for a lot of the northwest valley. ITD also says not to drive on it before it opens, even where it looks finished.

If you're weighing Star or northwest Meridian against a closer-in area, figure in the SH-16 drive, not just today's.
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Frequently Asked Questions
When does the new South Meridian Costco open?
Thursday, Nov. 5, 2026. Doors open at 8 a.m. at the new warehouse near Meridian Road and Lake Hazel Road, and the Meridian and Kuna chambers have a ribbon cutting set for 7:30 a.m. that morning.
When does the new downtown Boise YMCA open?
Saturday, Dec. 12, 2026, with a ribbon cutting at 10 a.m. The Treasure Valley Family YMCA says the current downtown building closes the week before so staff can move into the new one across State Street.
When does Target open in Meridian?
May 2027, at The District at Ten Mile near I-84 and Ten Mile Road. The developer says much of the first-phase retail will open around the same time.
When will SH-16 connect to I-84?
ITD says the full SH-16 corridor from I-84 to SH-44 is expected to open in mid-2027. Until then it's an active work zone, and ITD says not to drive on finished-looking sections.
Are these opening dates guaranteed?
No. They're the latest dates announced by the business, developer or agency, and construction schedules can change. I'll update this post if a date moves. This article is general information, not legal or financial advice.
Sources
- KIVI Idaho News 6, "New Costco coming to south Meridian, ribbon cutting planned for Nov. 5": https://www.kivitv.com/news/local-news/in-your-neighborhood/meridian/new-costco-coming-to-south-meridian-with-new-traffic-signals-ahead-of-november-opening
- Kuna Chamber of Commerce, "COSTCO Ribbon Cutting" (Nov. 5, 2026, 7:30 a.m.): https://business.kunachamber.org/chamber-events/details/costco-ribbon-cutting-1978494
- Meridian Local Scoop, "Meridian's Costco sets a Nov. 5 opening" (doors open 8 a.m.): https://www.meridianlocalscoop.com/p/costco-nov-5-opening-feed-mill-arts-center-scheels-restaurant-rainy-55-friday
- Treasure Valley Family YMCA, "Your New Downtown Boise YMCA" (opening date and FAQ): https://ymcatvidaho.org/give-back/build-your-new-downtown-boise-ymca/
- KBOI 2News (idahonews.com), "Second Fred Meyer location headed to Caldwell," Oct. 19, 2026: https://idahonews.com/news/local/second-fred-meyer-location-headed-to-caldwell
- Idaho Press, "Fred Meyer breaks ground for first-ever location in Caldwell, leads way for future commercial development," Mar. 12, 2026: https://www.idahopress.com/news/local/fred-meyer-breaks-ground-for-first-ever-location-in-caldwell-leads-way-for-future-commercial/article_7a6ff994-39e3-4bd3-a1bb-2a625c06912e.html
- KIVI Idaho News 6, "Caldwell grocery access gap persists as new stores promise relief for growing city": https://www.kivitv.com/caldwell/caldwell-grocery-access-gap-persists-as-new-stores-promise-relief-for-growing-city
- CenterCal Properties via PR Newswire, "CenterCal adds five national retailers and restaurants to The Village at Meridian Expansion," Aug. 14, 2026: https://www.prnewswire.com/news-releases/centercal-adds-five-national-retailers-and-restaurants-to-the-village-at-meridian-expansion-302851587.html
- KIVI Idaho News 6, "The Village at Meridian reveals new stores and restaurants in long-awaited final expansion phase": https://www.kivitv.com/news/local-news/in-your-neighborhood/meridian/the-village-at-meridian-reveals-new-stores-and-restaurants-in-long-awaited-final-expansion-phase
- KIVI Idaho News 6, "Meridian's District at Ten Mile set to open with Target, dining and retail in May 2027": https://www.kivitv.com/news/local-news/in-your-neighborhood/meridian/meridians-district-at-ten-mile-set-to-open-with-target-dining-and-retail-in-may-2027
- Idaho Press, "Nampa welcomes SEL with plans for 250 new local jobs," Sept. 17, 2026: https://www.idahopress.com/news/local/schweitzer-engineering-laboratories-expands-into-nampa/article_31c1008d-2031-4326-b43b-8b11b60af50c.html
- Schweitzer Engineering Laboratories, "SEL Expands Manufacturing Operations in Idaho with New Facility in Nampa," Sept. 15, 2026: https://selinc.com/company/news/sel-expands-manufacturing-operations-with-new-facility-in-nampa-idaho/
- Idaho Transportation Department, "ITD will accelerate interchange construction along SH-16 corridor": https://itd.idaho.gov/news/itd-will-accelerate-interchange-construction-along-sh-16-corridor/
- Idaho Transportation Department, SH-16 Construction project page: https://itd.idaho.gov/project/sh16construction/
- Idaho Transportation Department, SH-16 Monthly Newsletter, October 2026 update: https://myemail.constantcontact.com/SH-16-Monthly-Newsletter---October-2026-Update.html?aid=4Bj_F9Tw21I&soid=1139046599383
- Expo Idaho, Ada County's Park at Expo Idaho (opening date, intro mention): https://expoidaho.com/ada-county-park/
Information is deemed reliable but not guaranteed. Market figures are aggregate and for general information only.
