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A Wetlands Permit from the NHDES Wetlands Bureau is required for excavating, removing, filling, dredging or constructing structures within the following areas: Wetlands, such as forested, scrub-shrub, emergent wetlands, marshes, wet meadows and bogs.

What Home Buyers and Sellers Should Know About Septic Systems in New Hampshire. With proper maintenance, a septic system can work efficiently for as long as you own your home. On average, a system should last approximately 25 years.

Building a house in wetlands is not considered safe. There are chances that the house will settle or suffer from seepage problems in a long run. Moreover, Wetlands act as nature's sponge and assist with flood control and water quality. Thus, loss of these wetlands could lead to future drainage issues.

Notwithstanding the provisions of this section, privies (outhouses not conveying sewage by water) may be allowed if such facilities are first approved by the local municipal health officials as to location and construction of the facilities.

In New Hampshire, you, as the owner of a primary residence can your own septic tank. If you plan to remodel the residence to sell or are a licensed contractor, you must follow government regulations and acquire the mandatory permits needed to the septic system.

You'll have to have a permit if you want to build on or develop any regulated wetland, and you have to be approved for that permit before starting to build. Permits are approved once the delineation process is done. The USACE evaluates over 85,000 permit applications per year, and out of those, around 95% are approved.