When design matters.

terra firma landscape architecture has been established in Portsmouth, NH and serving the Seacoast New Hampshire, Maine, and southern New England since 1993. We specialize in landscape architectural aspects of site design such as urban gathering spaces and parks, custom residential projects, commercial properties of all kinds, streetscapes as green infrastructure, garden design, playgrounds and schoolyards, and recently memorial design.

We believe that landscapes reflect the vison and values of those that inhabit them.

Recent Projects

Fire Pit with hand-carved boulder furniture – Seacoast NH residence

Furniture hand carved from boulders with fire pit. Seacoast NH residence.

Recent News & Announcements

August 17, 2016The StoneBale Receives an Honorable Mention

The StoneBale recently won an Honorable Mention in the 6th Annual "Nature" Art Exhibition by Light Space & Time online art gallery. The StoneBale was chosen from 814 entries from around the world. The Honorable Mention award was in the 3 Dimensional Art Category. See the StoneBale featured alongside the other winners by visiting: https://www.lightspacetime.com/nature-2016-art-exhibition-3d-art-category/  … Read More …

February 17, 2016AIANH Award

McHenry Architecture earned an Honorable Mention Award for 3S Artspace from AIANH Excellence in Architecture Design Awards for 3S Artspace. Terra firma is proud to have worked on this project with the whole team, including Summit Engineering, and Wright-Ryan Construction. Congratulations to McHenry Architecture!  … Read More …

February 4, 2015The Being – 28 Years in the Making

Found, sculpted, and cast. The Being has been completed. See the video of the completed sculpture.  … Read More …