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Full-Service Excavation & Residential Construction

Serving the Hudson Valley and Catskills with excavation, site development, custom home construction, ADUs, foundations, septic systems, hardscaping, and outdoor living projects.

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More Than a Builder

One team for the property, the site, and the build.

ThornHaüs Construction provides excavation, site development, custom home construction, and outdoor living and property improvement services throughout the Hudson Valley and Catskills, including Saugerties and surrounding communities.

From preparing raw land and installing essential site infrastructure to building custom homes, additions, decks, patios, bluestone spaces, and other outdoor projects, our team brings experience across every phase of a property. Having excavation, site work, construction, and outdoor project expertise under one team allows us to understand how each phase connects to the next - with a hands-on approach focused on quality work, clear communication, and long-term results.

Our Services

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Excavation, Site Work & Land Development

From raw land to build-ready sites, our team handles the groundwork that sets a project up for success. Services include site preparation, land clearing, grading, drainage, utility trenching, driveway installation, ponds, excavation, hardscaping, and other property improvements.

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Foundations & Septic Systems

The work beneath a home matters just as much as what you see above it. ThornHaüs provides foundation excavation and preparation, septic system installation, drainage, utility work, and related site infrastructure with the long-term performance of the property in mind.

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Custom Homes & Residential Construction

We build homes around the property, the people who will live there, and the way they want to live. From early site planning through construction and finishing details, our team brings experience across every stage of the build to create thoughtful, well-built homes throughout the Hudson Valley and Catskills.

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ADUs, Additions & Property Development

Your property may have more potential than you think. We work with homeowners and property owners on ADUs, garages, additions, secondary structures, and larger property improvements designed to add space, function, and long-term value.

Have a project in mind?
Let's talk about what's possible.

From site work and outdoor spaces to additions and full custom builds, tell us what you're planning and we'll help you determine the next steps.

© 2026 ThornHaüs Construction

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