Katie Donigan

Hi, I’m Katie Donigan, a notary public, Realtor, and administrative professional with Costello Realty in Franklin, MA. I bring a real estate background and a detail-focused approach to each notarization, helping clients feel prepared and supported when important documents need attention.

My notary work includes assistance with real estate documents and other notary public needs, with the same professionalism and organization I use in my real estate and administrative roles. I understand how important accuracy, timing, and clear communication can be, especially when documents are connected to property or business matters.

I’m based in Franklin, Massachusetts, and I aim to provide a friendly, dependable experience for clients who need notary services through Costello Realty.