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A newly listed waterfront compound just outside Tulsa is drawing attention for its scale and price: a 12,000-square-foot estate in Sand Springs has hit the market at $9.5 million, a figure that could make it the most expensive lakefront home ever offered in Oklahoma. The property combines multiple buildings, private shoreline access and extensive landscaping, pushing it into rarefied territory for the region’s luxury market.
The estate, marketed under the name Diamond Bluff Cove, sits above Keystone Lake with views down the Arkansas River. It’s reached through a gated drive and is configured as a small compound rather than a single house — a layout aimed at buyers seeking both entertaining space and seclusion.
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Sand Springs priciest lake house hits market: inside a lavish Oklahoma waterfront estate
What’s on the property
The complex is split across three primary structures. The main residence is the largest, backed up by a sizable guest house and a separate modern workshop that could serve many uses — from vehicle storage to a studio.
- Listing price: $9.5 million
- Total area: about 12,000 sq ft
- Bedrooms/bathrooms: 12 beds, 11 baths
- Main house: ~5,700 sq ft
- Guest house: ~3,000 sq ft
- Other building: modern workshop
- Water access: private beach and boat dock on Keystone Lake
- Landscaping: more than $3 million reportedly invested, including synthetic turf installations
Inside and out, the property emphasizes outdoor living. A backyard pool looks toward the river valley and rolling hills, while private shoreline and docking facilities allow direct access to boating and lakeside recreation.
Why this listing matters now
At $9.5 million, the estate sits well above typical lakefront sales in the Oklahoma market. That gap could affect local pricing benchmarks for high-end properties and attract attention from buyers outside the immediate region who may view lakefront acreage as a hedge against denser urban holdings.
For the local market, a sale at or near the asking price would reset expectations for what lakefront parcels can command, especially for properties that combine acreage, water frontage and purpose-built guest or service structures.
Realtors involved in the listing frame the compound as appealing to outdoors enthusiasts and equestrian owners, pointing to the land’s scale and privacy as central selling points. Those features may broaden the pool of potential purchasers beyond conventional luxury-home buyers.
Local context
Keystone Lake and the Arkansas River are key recreational assets for the Tulsa metro area, popular for boating, fishing and weekend retreats. Properties with private docks and direct water access are comparatively scarce, which helps explain why a multi-structure estate like this stands out.
How quickly this listing moves — and at what price — will be watched by agents and appraisers alike as a potential indicator of demand at the very top of Oklahoma’s residential market.
Ultimately, the estate represents a convergence of scale, water frontage and investment-grade landscaping that is uncommon in the region. Whether it becomes the state’s most expensive lake house will hinge on market interest and the terms a buyer is willing to accept.
