Appraisers work for Appraisal Management Companies who assign them to various financial institutions based on the request of the financial institution. Appraisers are held to a different standard than realtors on offering price opinions. Appraisers have to subscribe to various federal guidelines as well as the guidelines of the financial institution to whom they assigned and laws of the state on zoning and other issues. Appraisers cannot always include improvements made by owners as part of their appraisals due to guidelines set by the federal, state, local authorities as well as the financial institutions. . I did not see any physical description of the property you own, nor of the properties you refer to. It appears you are currently working with a broker,. It may be helpful to you to ask that person about comparables to your property as well as what the overall market trends are in the Beverly area. Good luck to you.