Sevierville Approves 407 Indoor Water Park Site Plan — What It Means for Traffic, Cabins, and Home Prices

On Thursday, Aug. 6, the Sevierville Planning Commission approved a site plan for a hotel, timeshare, and indoor water park on Gateway Boulevard near Interstate 40. The project sits inside The 407: Gateway to Adventure, near Buc-ee's and next to the Courtyard by Marriott. Sevierville Development Director Corey Divel told The Mountain Press it is the next phase of Project Gateway 407: about 150 timeshare units, a 175-unit hotel, and a 74,000-square-foot indoor water park. Construction is expected to begin next year. Traffic, he said, will still be a problem until a new interstate exit is built.

That is the vote. It is not an opening day. The question is what an approved site plan changes between now and Fiscal Year 2030.

What did the Sevierville Planning Commission approve on Aug. 6? The commission signed off on a site plan requested by Robert Campbell and Associates. The Mountain Press described a hotel resort with timeshare units and an indoor waterpark element on Gateway Boulevard near the interstate.

A site plan is the city's yes on how the buildings sit on the land. It is not a ribbon-cutting. It is the step that lets the applicant keep moving while other city agreements are still being written. The travel center and the hotel next door are already on the ground. This vote is the lodging-and-water-park piece behind them.

How big is the hotel, timeshare, and indoor water park? Divel said the plan includes a timeshare facility of about 150 units, a hotel with 175 units, and a 74,000-square-foot indoor water park.

That is roughly 325 lodging units on the same I-40 off-ramp that already funnels people toward Pigeon Forge and Gatlinburg. If you own a short-term rental on this side of the county, that is more overnight inventory in the pipeline — not a rumor, and not open yet. The public record is unit counts, square footage, and a construction start expected next year.

Is the water park indoor or outdoor? Indoor. Divel was specific. The water park itself does not have an outside portion. Some of the slide tubes exit and re-enter the building, and those tubes are exposed as part of the design. Sevierville requires a review of any external entertainment elements over 44 feet in height. The exposed slides triggered that review.

Neighbors will see an indoor facility with some hardware from the road, not a lazy river in the parking lot. Whether that fills a cabin across the county or just the hotel next door is a question for after construction starts.

What is still pending, and when does construction start? Divel said construction is expected to begin next year. He also listed unfinished items, and those decide whether "next year" holds.

Sevierville no longer allows third-party trash collection, so the applicant has to enter a trash pick-up agreement with the city. Water and sewer details are still pending. So are landscaping and maintenance.

Until those close, this is an approved site plan, not a finished permit stack. If a seller tells you the water park is "under construction," ask for the month. The public record as of Aug. 6 is "next year."

What did Corey Divel say about traffic and Exit 408? TDOT's 10-year plan includes Exit 408, with construction beginning in Fiscal Year 2030, to help relieve traffic congestion at the development. The project includes a new connector from Dumplin Valley Road on the north side of I-40 to Douglas Dam Road on the south side, giving motorists a path to Highway 66.

"Traffic's going to be an issue until that gets completed," Divel said. "There'll probably be about a three-year gap, maybe up to five years, before the 408 is actually constructed."

The resort is expected to start next year. The interchange that is supposed to handle it is not. Treat Exit 408 as a 2030 infrastructure project, not a 2026 amenity.

What are Sevier County homes doing right now? Great Smoky Mountains MLS figures already published on the Kings of Real Estate Sevierville desk show July 2026 was a high-volume month, not a faster one.

Sevier County posted 108 closings in July 2026, compared with 76 in July 2025. Closed volume was $70.1 million, up 46% year over year. The average sale was $648,918. Price per square foot was $349, up 4%. Days to contract ran 81, versus 76 a year earlier.

June's listing picture was softer on asking price and thicker on choice. The median listing was $619,000, down 7.8% year over year. Active listings sat at 3,331, up 7.4%. Homes that sold did so at 96% of list.

The 30-year fixed mortgage rate was 6.67% in the Aug. 13 Freddie Mac Primary Mortgage Market Survey, down from 6.69% the week before. The 15-year was 5.96%, down from 6.01%.

A 46% jump in closed volume with days-to-contract five days slower than last July is not a bidding-war market. A site plan on Gateway Boulevard does not reset a $349-a-foot sale if the house is not priced.

What this means if you own or buy here - Cabin and short-term rental owners near Exit 407: 175 hotel units and about 150 timeshare units are more lodging on the same off-ramp. Do not raise your 2027 nightly rate off a site plan. Construction is expected next year, not this fall. - Highway 66, Dumplin Valley Road, and Douglas Dam Road owners: Divel said traffic will be an issue until Exit 408 is built, with a three- to five-year gap. Price the commute you have. TDOT's 10-year plan puts that construction in Fiscal Year 2030. - Sellers listing this month: July closed 108 homes at an average of $648,918. June sold at 96% of list against 3,331 actives. If your number assumes a water-park premium, you will sit. Price the house, not the rendering. - Buyers: write the contract to today's roads. A site plan is not an amenity you can walk to. Ask whether the seller's "407 growth" pitch is the travel center already open or a water park that still needs water, sewer, landscaping, maintenance, and a city trash agreement. - Move-up sellers: you cannot make an offer you can honor until your current home is settled. A guaranteed-sale plan removes that contingency first,* so you can shop the next house — or the next cabin — with a real budget.

Call the Kings of Real Estate team at 865-365-2280. Sevierville is at 1001 Parkway, with offices in Knoxville (121 Suburban Road, Suite 101), Nashville/Brentwood (214 Overlook Circle), and Johnson City (2244 N Roan St #107). If you want a straight read on what this site plan does — and does not do — to your list price, call before you reprice off a headline.

Frequently asked questions

What did the Sevierville Planning Commission approve on Aug. 6?

A site plan requested by Robert Campbell and Associates for a hotel, timeshare, and indoor water park on Gateway Boulevard near Interstate 40, inside The 407: Gateway to Adventure, near Buc-ee's and next to the Courtyard by Marriott. Sevierville Development Director Corey Divel called it the next phase of Project Gateway 407.

How big is the hotel, timeshare, and indoor water park?

Divel said the plan includes a timeshare facility of about 150 units, a hotel with 175 units, and a 74,000-square-foot indoor water park. Construction is expected to begin next year.

Is the water park indoor or outdoor?

Indoor. Divel said the water park itself does not have an outside portion. Some slide tubes exit and re-enter the building and are exposed as part of the design. The city reviews external entertainment elements over 44 feet in height.

What is still pending, and when does construction start?

Construction is expected to begin next year. Still being discussed: a trash pick-up agreement with the city, because Sevierville no longer allows third-party trash collection, plus water and sewer, landscaping, and maintenance.

What did Corey Divel say about traffic and Exit 408?

TDOT's 10-year plan has Exit 408 construction beginning in Fiscal Year 2030, with a connector from Dumplin Valley Road north of I-40 to Douglas Dam Road south, giving a path to Highway 66. Divel said traffic will be an issue until then, with about a three-year gap, maybe up to five years, before 408 is constructed.

What are Sevier County homes doing right now?

Great Smoky Mountains MLS: July 2026 had 108 closings vs. 76 in July 2025, closed volume $70.1 million (+46% YoY), average sale $648,918, $349 per square foot (+4%), and 81 days to contract vs. 76. June median listing $619,000 (-7.8% YoY), 3,331 active listings (+7.4%), sale-to-list 96%. The 30-year fixed rate was 6.67% on Aug. 13 (from 6.69%); the 15-year was 5.96% (from 6.01%).

What's happening in the Smokies this week

• Cades Cove Vehicle-Free Wednesdays — every Wednesday through Sept. 30 · Cades Cove Loop Road
• National Mine Rescue Contest — Aug. 23-27 · Sevierville Convention Center
• Great Smoky Mountains National Park ranger programs — daily through August · visitor centers, Gatlinburg and Townsend
• Dollywood's Splash Country — open through Sept. 20 · Pigeon Forge

Sources: The Mountain Press — Site plan approved for 407 resort; Great Smoky Mountains MLS July 2026; Freddie Mac PMMS Aug. 13, 2026.

*Tracy and seller must agree upon price and possession date. Kings of Real Estate, LLC DBA "Your Home Sold Guaranteed Realty"