Rocking K Ranch Is the New Headline of Far East Tucson's Houghton Road Growth Story: Inside Diamond Ventures' 4,800-Acre Rincon Valley Master Plan With ~950 Homes Already Occupied, Pulte's Del Webb 55+ Enclave, Mattamy's Oasis Grand Opening in July 2025, the Brand-New Saguaro Creek K-8 That Opened the Same Week, and the City of Tucson's Final-Phase Houghton Road Widening From 22nd Street to Irvington Targeted to Start Construction in Late 2026

Rocking K Ranch — the 4,800-acre Diamond Ventures master-planned community in the Rincon Valley southeast of central Tucson, adjacent to Saguaro National Park East and inside Vail Unified School District — is the most active large-scale residential project on the far east side of the Tucson metro in 2026. Per Diamond Ventures' own residential-real-estate page, the master plan is entitled for up to 6,100 homes; per the official Rocking K community marketing and Homes.com's neighborhood guide, the current development plan calls for 4,000-plus homes across roughly 14 neighborhoods, with approximately 950 homes already occupied as of the first quarter of 2025. Per Real Estate Daily News and the Mattamy Homes newsroom, Pulte, Lennar, and KB Home paid $37.4 million for the first-phase builder pads, Lennar and Meritage closed on 326 additional shovel-ready lots on June 25, 2024, and Mattamy Homes held a grand opening for its Oasis at Rocking K neighborhood on July 11, 2025. Per the Live Rocking K community blog, Vail USD's 22nd school — the $32 million Saguaro Creek K-8 at 8150 S. Rocking K Ranch Loop — opened to more than 400 students on July 14, 2025. North of the master plan, per the Tucson Sentinel and the Regional Transportation Authority, the final phase of the 13-mile Houghton Road corridor improvement, from 22nd Street to Irvington, is targeted for a late-2026 construction start. Here is the May 29, 2026 sourced walk-through for Tucson buyers, sellers, far-east-side residents, and relocators evaluating the corridor.