All states
Maryland
4 layers of parcels and buildings, each tested with our export code. The national base map (roads, water, buildings) is offered everywhere too.
Open the map| Area | Layers | Checked | Map |
|---|---|---|---|
| Statewide | Parcels | 10 Nov 2026 | Map |
| Anne Arundel County | Buildings | 3 Nov 2026 | Map |
| Baltimore city | Buildings | 3 Nov 2026 | Map |
| Montgomery County | Buildings | 3 Nov 2026 | Map |
Terms, checks and service URLs for every layer
Statewide
ParcelsChecked 10 Nov 2026
- What it is
- Maryland parcel boundaries (MDP / SDAT). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Maryland Department of Planning / SDAT (MD iMAP)
- Checked
- Fetched by our export code on a ~300 m test site on 10 November 2026: 112 features. See it on the map
- Terms
- "MD iMAP, MDP, SDAT" — Copyright line only; no licence stated. Publicly served, no token (checked 2026-11-10).
- Note
- Coverage is the extent the publisher declares; the layer was too large to measure.
- Layer URL
Anne Arundel County
Building footprintsChecked 3 Nov 2026
- What it is
- Anne Arundel County Buildings. Captured from county orthophotos; UPDATE_DAT 2014, 2020 and 2023 (item says captured from 2023 orthophotos, updated May 2024)
- Publisher
- Anne Arundel County GIS
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 71 features. See it on the map
- Terms
- Public; county open data disclaimer: no liability, use at own risk, not for surveying or engineering (the linked full GIS Disclaimer PDF currently returns 404)
- Layer URL
Baltimore city
Building footprintsChecked 3 Nov 2026
- What it is
- Baltimore City Buildings Footprint. Planimetric capture, SRCDATE 2008; publisher says not fully reviewed or updated since 2010
- Publisher
- City of Baltimore (Open Baltimore)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 24 features. See it on the map
- Terms
- Public Open Baltimore layer; no license or use text on the item. No token.
- Layer URL
Montgomery County
Building footprintsChecked 3 Nov 2026
- What it is
- Montgomery County Buildings (planimetrics). Planimetric capture for 1:1200 mapping, maintained by the Planning Department (3D update 2023)
- Publisher
- Montgomery County Planning Department (M-NCPPC) with Montgomery County ITI
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 17 features. See it on the map
- Terms
- Open: copy, modify, distribute and analyse, including commercially, with attribution to the Montgomery County Planning Department; no warranty (license on the Department's Buildings 3D item)
- Layer URL
“Checked” means fetched by our export code on a test site. How we check · Data credits. Most local layers were found through Basesheet's source list (Copyright (c) 2026 Hunter Hillman, MIT License), then re-checked by us.