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Hardscaping & Retaining Walls

Providing Everything You Need

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Get in Touch

Union Gap, WA 

(509) 412-3760

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Why choose us?

  • Experienced Foundation Specialists – From new foundations and structural repairs to complete foundation replacements, we provide dependable solutions for residential, commercial, and civil projects.

  • Licensed, Bonded & Insured – MTZ Construction is a Washington licensed contractor committed to protecting our customers, employees, and every project we undertake.

  • Project Management From Start to Finish – We coordinate every phase of your project, from planning and permitting to construction and final walkthrough, keeping you informed every step of the way.

  • Quality Workmanship – We take pride in delivering durable, professionally constructed foundations backed by careful planning, quality materials, and attention to detail.

Our Process

📞 Consultation & Free Estimate

We discuss your project, answer your questions, and evaluate the site to understand your goals and project requirements.

📋 Detailed Proposal

You'll receive a clear written proposal outlining the scope of work, materials, pricing, and project expectations.

📅 Planning & Scheduling

Once approved, we coordinate permits (when required), order materials, and schedule your project to keep everything on track.

🏗️ Construction

Our team completes the work using quality materials, proven construction practices, and clear communication throughout the project.

✅ Final Walkthrough

​Before we consider the project complete, we perform a final walkthrough to ensure the work meets our quality standards and your expectations.

Service Areas

MTZ Construction proudly provides foundation services throughout the Yakima Valley and Central Washington, including Yakima, Selah, Union Gap, West Valley, Terrace Heights, Moxee, Zillah, Sunnyside, Ellensburg, Cle Elum, the Tri-Cities, and the Seattle metropolitan area for qualifying projects.

View our complete service areas →

Quality Assurance - Warranty

MTZ Construction is committed to delivering foundations built for long-term performance and structural integrity. Every project is completed using quality materials, proven construction practices, and careful attention to detail. We stand behind our workmanship and address any workmanship-related concerns in accordance with our warranty terms. Manufacturer warranties remain the responsibility of the respective product manufacturers where applicable.

Financing Available

Flexible financing options are available for qualified customers. Contact us to learn more or visit our Financing page.

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