This map and the lot coverage figures on it were assembled in the first week of September 2026 so the committee could look at what Proposed Local Law 1 of 2026 would do, parcel by parcel. It has not been reviewed for accuracy by anyone but the Building Department, the numbers are estimates from imagery and state data layers, and the layout is still changing.
Use it to see the pattern and to ask questions. Do not rely on any single lot's figure, do not quote it as a determination, and do not share the link beyond the committee. Every sheet says where its numbers come from; where the sources disagree, it says so in red.
Today, lot coverage means the share of a lot covered by buildings (Chapter 190, section 190-2), in every district. Proposed Local Law 1 keeps that definition in the residential districts (RRA-1, RRA-2, VR, HR) but, in the business districts (HB, VB, C-1, C-2, C-3), adds pavement, gravel, compacted stone, parking, loading, storage and semi-impervious surfaces to the count. On a lot in more than one district, each district portion is calculated on its own.
The Appendix B maximums do not change under the draft:
| District | Maximum lot coverage |
|---|---|
| HB Hamlet Business | 80% |
| VB Village Business | 70% |
| C-1, C-2, C-3 Commercial | 60% |
| RRA-1, RRA-2 | 10% |
| VR Village Residential | 25% |
| HR Hamlet Residential | 20% |
Every parcel is shaded by its proposed-rule coverage as a share of its district maximum, worst district portion: under a quarter of the maximum, a quarter to a half, half to 80%, 80% to the line, over the maximum. Residential lots keep their buildings-only figure. Grey lots have no maximum or were not classified.
Click any parcel. The panel opens with the coverage arithmetic per district portion: portion area, building area, developed surface, coverage under the current rule, coverage under the proposed rule, and the maximum in brackets. Business lots carry a case sheet (three panels: 2019 leaf-on imagery, the classified surfaces, the current state orthophoto with the Appendix B setback envelope) and a swipe compare view. Where a residential portion of a business lot is paved, the panel prints the figure it would have if counted, because the draft leaves that pavement out.
The Map button switches the shading to the current rule or to developed surface alone, and turns the zoning district lines, the flood overzone and the county reference layers on or off. Zoning in the panel lists the Appendix A uses and Appendix B dimensions for the lot's district.
Of the business-district portions townwide, none exceeds its maximum under the current buildings-only rule. Under the proposed rule, two do, both on Route 9H (a skating rink and a restaurant, each in the low sixties against a 60% cap), and about nine more sit within reach of theirs. The typical HB lot moves from roughly 10% coverage to roughly 40%; the typical VB lot from 4% to 12%. A single uniform business cap that kept 95% of today's portions conforming would need to be about 62%.
The full tables, charts and method are in the board report; every business lot's sheet is in the case sheet index, worst first.
Parcel lines and ownership: Columbia County Real Property, 2025 cut. Assessment inventory: Columbia County PROS, September 2026. Imagery: NYS orthoimagery and USDA NAIP 2019. Nothing on this site is a determination on any property; questions to the Building Department.