Doing business in Washington and the surrounding area for over 35 years.

PH: (636) 239-2731
FX: (636) 239-2733

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Our Service Area

Proudly serving all of: Franklin, Gasconade, Warren, St Charles, Jefferson, Montgomery, and Crawford counties.

Parts of: St Louis, Lincoln, Maries, Phelps and Washington counties.


Landmark Appraisal Company is a family-owned company which has been serving the Franklin County and surrounding areas since 1976. Our company has grown in the past few years, as we have expanded our staff and our services, and moved our office to 1601 West 5th Street in Washington. Karen J. Koopman, the owner of the company, is joined by daughter-in-law, Mallory and Sherry and Brandy (mother and daughter). And as a family-team, we continue to look for ways to better serve our customers. We look forward to serving our community, in both the residential and commercial aspects of the business.

We only cover the areas where we feel comfortable and are knowledgeable.  It is best to hire an appraiser in their own area where they know land values, trends and local realtors for the best appraisal possible.