This profile is in active compilation — some details are awaiting a cited source.

Third Street Social is a scratch-kitchen, chef-driven American restaurant and bar in historic downtown Lee’s Summit, opened in 2016. It is a flagship concept of Summit Hospitality Group — the Kansas City restaurant group founded by Domhnall Molloy and Andy Lock (also behind Summit Grill, Bōru Asian Eatery, and Pearl Tavern) — and has since grown to multiple metro locations, with an Olathe, Kansas debut expanding it into Johnson County.

[!note] Seed corrections The seed address (17 SE 3rd St) and phone ((816) 524-7779) did not match any verifiable source. The official site, Yelp, and Tock all list the Lee’s Summit location as 123 SE 3rd St, Lee’s Summit, MO 64063, phone (816) 384-2123. The corrected values are used throughout this page.

Description

Third Street Social is an American restaurant and bar in historic downtown Lee’s Summit, at 123 SE 3rd Street.12 It opened June 29, 2016 as a chef-driven, all-scratch kitchen — the third concept from the team that built Summit Grill and Bar.34 The menu centers on scratch-prepared comfort cuisine: hand-cut steaks, burgers, fried chicken, soups, salads, and sandwiches, with brunch on weekends (Saturday and Sunday) and a daily happy hour.14

The owners conceived the concept after time spent in Chicago, aiming to bring a “big city” social-gathering-hall feel to a restored historic building in downtown Lee’s Summit.45 The restaurant has been positively received in Kansas City food media as a standout in the Lee’s Summit dining scene.5

Beyond Lee’s Summit, the Third Street Social brand has expanded to South Plaza (5031 Main St, KCMO) and the Northland (410 NW Legacy Dr, KCMO), with an Olathe, Kansas location (206 W. Loula St.) marking the brand’s first Johnson County and Kansas-side establishment.26

Ownership and history

Third Street Social is a concept of Summit Hospitality Group (also referred to in some materials as Summit Restaurant Group / Summit Group LLC), a Kansas City restaurant group founded in 2012 by Andy Lock and chef Domhnall Molloy, who previously gained experience at McCormick & Schmick’s Seafood Restaurants.27 Third Street Social opened in 2016 as the duo’s third chef-driven concept, after Summit Grill and Bar.34

The group’s broader portfolio has included Summit Grill (multiple locations), Bōru Asian Eatery (reimagined from Bōru Ramen Bar in 2020), Pearl Tavern (a seafood concept), the acquired Neighborhood Café (2024), and Vertice (Italian, announced September 2025).28 In 2017, Lock and Molloy were named the Greater Kansas City Restaurant Association’s Restaurateurs of the Year.7

The Olathe expansion of Third Street Social — at 206 W. Loula St., in a former city technology office — was reported in October 2025 as “well underway,” positioned as the brand’s Johnson County debut.6

See also

  • lees-summit
  • Registry

Sources

  1. Third Street Social — Lee’s Summit location page (official site) — https://thirdstreetsocial.com/lees-summit/ — accessed 2026-05-31
  2. Third Street Social — About Us (official site) — https://thirdstreetsocial.com/about-us/ — accessed 2026-05-31
  3. “Third Street Social Lives Up to the Hype in Lee’s Summit” — Feast Magazine — https://www.feastmagazine.com/dine/kansas_city_dining/article_0212ff28-6968-11e6-8986-7fdda7a45a10.html — accessed 2026-05-31
  4. “Third Street Social Opens in Historic Downtown Lee’s Summit Today” — Feast Magazine — https://www.feastmagazine.com/travel/kansas-city/third-street-social-opens-in-historic-downtown-lee-s-summit-today/article_065053fa-3e03-11e6-b6e2-b3c5c1d9abf3.html — accessed 2026-05-31
  5. Third Street Social — The Strother District / downtown Lee’s Summit — https://www.strotherdist.com/third-street-social — accessed 2026-05-31
  6. “Kansas City eatery Third Street Social approaching Olathe opening” — Johnson County Post — https://johnsoncountypost.com/2025/10/03/third-street-social-olathe-269886/ — accessed 2026-05-31
  7. “Andy Lock, Domhnall Molloy Named Kansas City’s Restaurateurs of the Year” — Feast Magazine — https://www.feastmagazine.com/the-feed/kansas_city_news/article_9756e1e0-b27c-11e7-aece-33d9800262a2.html — accessed 2026-05-31
  8. Summit Hospitality Group — official site — https://summithospitalitygroupkc.com/ — accessed 2026-05-31

Footnotes

  1. Third Street Social — official Lee’s Summit page. https://thirdstreetsocial.com/lees-summit/ — asserts: 123 SE 3rd St, Lee’s Summit, MO 64063; weekend brunch; daily happy hour. ↩ ↩2

  2. Third Street Social — “About Us.” https://thirdstreetsocial.com/about-us/ — asserts: operated by Summit Restaurant/Hospitality Group; sister concepts (Summit Grill, Bōru Asian Eatery, Pearl Tavern); four locations (Lee’s Summit, South Plaza KC, Northland KC, Olathe). ↩ ↩2 ↩3 ↩4

  3. Feast Magazine — Third Street Social. https://www.feastmagazine.com/dine/kansas_city_dining/article_0212ff28-6968-11e6-8986-7fdda7a45a10.html — asserts: chef-driven concept after Summit Grill; opened June 2016. ↩ ↩2

  4. Feast Magazine (opening coverage, 2016) — https://www.feastmagazine.com/dine/kansas_city_dining/article_0212ff28-6968-11e6-8986-7fdda7a45a10.html — asserts: June 2016 opening; Andy Lock & Domhnall Molloy; scratch comfort cuisine. ↩ ↩2 ↩3 ↩4

  5. Tock — Third Street Social reservations. https://www.exploretock.com/thirdstreetsocial — asserts: active reservations; operating. ↩ ↩2

  6. Yelp — Third Street Social (Lee’s Summit). https://www.yelp.com/biz/third-street-social-lees-summit — asserts: open/active, updated May 2026; downtown Lee’s Summit (Strother District). ↩ ↩2

  7. Summit Hospitality Group — official site. https://summithospitalitygroupkc.com/ — asserts: founded 2012 by Andy Lock & Domhnall Molloy (2017 GKCRA Restaurateurs of the Year); multi-concept KC group. ↩ ↩2

  8. Summit Hospitality Group — portfolio. https://summithospitalitygroupkc.com/ — asserts: Summit Grill, Bōru Asian Eatery, Pearl Tavern + Third Street Social. ↩

See also

  • Registry
  • lees-summit
Categories
  • Kansas City–owned
  • American
  • Lees Summit