You don't specify ArcMap or Pro Parcel Fabric, but as an employee of just such a department as you describe, I can tell you that we benefit immensely from the parcel fabric data model.
We use the Pro Parcel Fabric. Because the parcel types are organized as simple feature layers, we are easily able to publish web layers from them, and to construct complex Query Layers to join our parcels with our on-premise assessment database in ways that were simply not possible (or not nearly as easy) as they are with the parcel fabric.
We also benefit considerably from the record-centric structure. We are able to locate changes to the cadastre and tie them directly to recorded documents simply by using the Parcel Fabric. Previous staff had attempted to achieve this on their own with a simple topology and half a dozen auxiliary layers, resulting in considerable double-work, and as a result, greater errors.
- Josh Carlson
Kendall County GIS