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*The Angi rating for Land Surveying companies in Roundup, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Land Surveying needs.

*The HomeAdvisor rating for Land Surveying companies in Roundup, MT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Land Surveying needs.

Last update on January 20, 2026

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Stahly Engineering & Associates

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Stahly Engineering & Associates

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56 years of experience

Stahly Engineering & Associates, a full service civil engineering and survey firm since 1970, believes that building positive relationships by delivering quality services is the key to our success. Personal involvement from owners and project managers in individual projects performed and the communities we serve strengthens our commitment to our clients' goals. Stahly Engineering provides engineering services in the fields of transportation, site development, water and wastewater systems, and structures. We also assist public and private clients with planning, grant writing and administration, GIS, all types of survey services, and construction inspection.

Stahly Engineering & Associates, a full service civil engineering and survey firm since 1970, believes that building positive relationships by delivering quality services is the key to our success. Personal involvement from owners and project managers in individual projects performed and the communities we serve strengthens our commitment to our clients' goals. Stahly Engineering provides engineering services in the fields of transportation, site development, water and wastewater systems, and structures. We also assist public and private clients with planning, grant writing and administration, GIS, all types of survey services, and construction inspection.

Land Surveying questions, answered by experts

Soil testers and licensed excavators are often the professionals you hire if you need a perc test. In some cases, structural engineers will also be able to conduct the test for you. In many municipalities, you’ll need your professional on-site to dig and fill the holes with water, as well as a representative from your local building department or health department. That representative is the individual who will determine whether your test passes or fails.

Land surveys don’t technically expire. They do serve as a point of reference and a snapshot of your property, though, so as soon as you make changes to your property (and even if your neighbor makes certain changes to theirs), your existing land survey becomes inaccurate, and a new one must be done. Even if you don’t make any changes to your property, many states only guarantee the accuracy of a land survey for five to ten years.

Land surveying can help give clear guidance on your property boundaries for numerous situations. And in some cases, having your land surveyed is a requirement. Some common reasons to have your land surveyed include:

  • Planning for construction projects, like building a fence

  • Locating utilities, such as plumbing fixtures

  • Settling property line disputes 

  • Creating subdivisions 

  • Meeting mortgage requirements

  • Selling your property

This is fairly rare, but sometimes the local government or a group like a historical society will label a tree as a landmark, or historical item. These designations almost always come with a small, on-site plaque for identification, but you should also be able to look up protected trees in your area on a city website or similar list. If the tree in question is a landmark, call your local government and ask how to proceed before making any plans.

Professional well contractors may use electromagnetic mapping to look for places with a high likelihood of water. Water access can vary significantly, even on the same property, so it can be difficult to know where to drill if you don’t have specialized tools to look for water.

The Roundup, MT homeowners’ guide to land surveying services

From average costs to expert advice, get all the answers you need to get your job done.

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