Baltimore City · 21202
501 N CALVERT ST
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- Total assessment
- $400,000
- Land use
- Commercial (C)
- Year built
- —
- Last sale
- May 31, 2017
Assessment
| Owner | ATAPCO BALTIMORE I,LLC |
|---|---|
| Land use | Commercial (C) |
| Total assessment | $400,000 (cycle 2026) |
| Last sale | May 31, 2017 — $10,029,412 |
| Year built | — |
| Zoning | C-5DC |
| Vacant | — |
Permits
32| Type | Description | Cost | Issued |
|---|---|---|---|
| COM2024 | SWAPPING OUT EXISTING ANTENNAS FOR NEW ANTENNAS AS PER PLANS AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET, THEN SEPARATE PERMIT IS REQUIRED. | $25,000 | Oct 31, 2024 |
| COM2023 | AMEND PERMIT: ADD ELECTRICAL CONTRACTOR . (ORIGINAL PERMIT:COM2022-01322:REMOVE 5 EXISTING ANTENNAS. REMOVE 6 EXISTING RRH'S. INSTALL 8 PROPOSED ANTENNAS. INSTALL 6 PROPOSED RRH'S. NO GROUND WORK AS PER PLANS AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET, THEN SEPARATE PERMIT IS REQUIRED.) Original Permit Description:(COM2022-01322) REMOVE 5 EXISTING ANTENNAS. REMOVE 6 EXISTING RRH'S. INSTALL 8 PROPOSED ANTENNAS. INSTALL 6 PROPOSED RRH'S. NO GROUND WORK AS PER PLANS AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET, THEN SEPARATE PERMIT IS REQUIRED. | — | Jul 21, 2023 |
| COM2023 | Extend Original Permit.(original permit:COM2022-01322:REMOVE 5 EXISTING ANTENNAS. REMOVE 6 EXISTING RRH'S. INSTALL 8 PROPOSED ANTENNAS. INSTALL 6 PROPOSED RRH'S. NO GROUND WORK AS PER PLANS AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET, THEN SEPARATE PERMIT IS REQUIRED.) Original Permit Description:(COM2022-01322) REMOVE 5 EXISTING ANTENNAS. REMOVE 6 EXISTING RRH'S. INSTALL 8 PROPOSED ANTENNAS. INSTALL 6 PROPOSED RRH'S. NO GROUND WORK AS PER PLANS AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET, THEN SEPARATE PERMIT IS REQUIRED. | — | Mar 2, 2023 |
| COM2022 | ADD 6 CBAND ANTENNAS 2 STACKED PER SECTOR AS PER PLANS AS PER CODE. | $10,000 | Feb 15, 2023 |
| USE2020 | PARTIAL USE OF SPACE AS FOLLOWS… GROUND/ GARAGE LEVEL: USE AS GARAGE & STORAGE SPACE | — | Sep 29, 2022 |
| COM2022 | REMOVE 5 EXISTING ANTENNAS. REMOVE 6 EXISTING RRH'S. INSTALL 8 PROPOSED ANTENNAS. INSTALL 6 PROPOSED RRH'S. NO GROUND WORK AS PER PLANS AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET, THEN SEPARATE PERMIT IS REQUIRED. | $10,000 | Jul 21, 2022 |
| COM2022 | INSTALL (12) # LOW VOLTAGE AS PER CODE. *NOTE: DEVICES NOT FIRE ALARM RELATED | $10,000 | Feb 4, 2022 |
| COM2021 | REINSTATE ORIGINAL PERMIT.(ORIGINAL PERMIT:COM2020-01817:REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE.) Original Permit Description:(COM2020-01817) REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE. | — | Dec 2, 2021 |
| COM2021 | REINSTATE ORIGINAL PERMIT.(ORIGINAL PERMIT:COM2020-01817:REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE.) Original Permit Description:(COM2020-01817) REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE. | — | Aug 11, 2021 |
| COM2021 | REPLACE FIRE ALARM DEVICES WITH NEW AS PER PLANS AS PER CODE. | $25,000 | Jun 29, 2021 |
| COM2021 | AMEND PERMIT: ADD ELECTRICAL CONTRACTOR .REINSTATE ORIGINAL PERMIT.(ORIGINAL PERMIT:COM2020-01817:REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE.) Original Permit Description:(COM2020-01817) REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE. | — | Jun 28, 2021 |
| USE2020 | PARTIAL USE OF SPACE AS FOLLOWS… GROUND FLOOR-PORTION OF FLOOR USE AS LOBBY SPACE, TELECOM RPPM & EXISTING OFFICE 1ST FLOOR: PORTION OF 1ST FLOOR USE AS EXISTING LOBBY SPACE & CONF. ROOMS 3RD FLOOR: PORTION OF 3RD FLOOR USE AS EXISTING OFFICE SPACE, CONFERENCE ROOMS, CHANGING ROOMS, & BASE BUILDING SYSTEMS UPDATES. | — | Jun 15, 2021 |
| USE2020 | PARTIAL USE OF SPACE AS FOLLOWS… EXISTING FIRE PUMP ROOM | — | Jun 11, 2021 |
| USE2020 | PARTIAL USE OF SPACE PORTION OF 3RD FLOOR USED AS EXISTING OFFICE SPACE, CONFERENCE ROOMS, UPDATED ELECTRICAL SYSTEMS | — | Jun 11, 2021 |
| COM2021 | AMEND PERMIT: ADD HVAC AND PLUMBER CONTRACTOR . (ORIGINAL PERMIT:COM2020-02922:3RD FLOOR- NEW NON-STRUCTURAL PARTITIONS, CEILINGS, MECHANICAL AND PLUMBING MODIFICATIONS, NEW AND MODIFIED ELECTRICAL AS PER PLANS AS PER CODE. SEPARATE PERMIT REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM.) Original Permit Description:(COM2020-02922) 3RD FLOOR- NEW NON-STRUCTURAL PARTITIONS, CEILINGS, MECHANICAL AND PLUMBING MODIFICATIONS, NEW AND MODIFIED ELECTRICAL AS PER PLANS AS PER CODE. SEPARATE PERMIT REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM. | — | Jan 25, 2021 |
| COM2021 | AMEND PERMIT: ADD HVAC AND PLUMBER CONTRACTOR .(ORIGINAL PERMIT:COM2020-03132:GROUND FLOOR G028- ENLARGE EXISTING ROOM, INCLUDING DEMOLITION OF EXISTING, NON-STRUCTURAL PARTITIONS UPDATE PLUMBING AS PER PLANS AS PER CODE.) Original Permit Description:(COM2020-03132) GROUND FLOOR G028- ENLARGE EXISTING ROOM, INCLUDING DEMOLITION OF EXISTING, NON-STRUCTURAL PARTITIONS UPDATE PLUMBING AS PER PLANS AS PER CODE. | — | Jan 25, 2021 |
| COM2021 | AMEND PERMIT: ADD ELECTRICAL CONTRACTOR . (ORIGINAL PERMIT:COM2020-03132:GROUND FLOOR G028- ENLARGE EXISTING ROOM, INCLUDING DEMOLITION OF EXISTING, NON-STRUCTURAL PARTITIONS UPDATE PLUMBING AS PER PLANS AS PER CODE.) Original Permit Description:(COM2020-03132) GROUND FLOOR G028- ENLARGE EXISTING ROOM, INCLUDING DEMOLITION OF EXISTING, NON-STRUCTURAL PARTITIONS UPDATE PLUMBING AS PER PLANS AS PER CODE. | — | Jan 11, 2021 |
| COM2020 | GROUND FLOOR G028- ENLARGE EXISTING ROOM, INCLUDING DEMOLITION OF EXISTING, NON-STRUCTURAL PARTITIONS UPDATE PLUMBING AS PER PLANS AS PER CODE. | $200,000 | Jan 8, 2021 |
| COM2020 | INSTALLATION OF 49 LOW VOLTAGE CCTV CAMERAS AND 12 CARD READERS FOR THE BALTIMORE CITY POLICE AS PER PLANS AS PER CODE. LOW VOLTAGE WILL BE PERFORMED BY THOMAS STEG M2224 ONLY. | $123,966 | Dec 3, 2020 |
| COM2020 | 3RD FLOOR- NEW NON-STRUCTURAL PARTITIONS, CEILINGS, MECHANICAL AND PLUMBING MODIFICATIONS, NEW AND MODIFIED ELECTRICAL AS PER PLANS AS PER CODE. SEPARATE PERMIT REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM. | $500,000 | Nov 24, 2020 |
| COM2020 | SCOPE OF WORK:--LEVEL II INTERIOR ALTERATIONS--CONVERSION OF THE GROUND FLOOR PRINTING PRESS ROOM (F-1 USE) TO PARKING GARAGE USE (S-2) WORK INCLUDED CONSTRUCTION OF A NEW VEHICULAR RAMP, PARTITIONS, AND EXHAUST SYSTEMS (FOR THE NEW USE) --AS PER PLANS --AS PER CODE. --SEPARATE PERMIT REQUIRED FOR SPRINKLER INSTALLATION | $450,000 | Nov 9, 2020 |
| COM2020 | FIRE PUMP REPLACEMENT AS PER PLANS AS PER PCODE. | $275,000 | Oct 28, 2020 |
| COM2020 | SCOPE OF WORK: INTERIOR ALTERATIONS TO INCLUDE: SPRINKLER WORK, RELOCATE 38 FIRE SPRINKLER HEADS TO ACCOMMODATE THE INTERIOR ALTERATIONS BEING MADE TO THE 3RD FLOOR OF AN EXISTING OFFICE BUILDING FOR NEW TENANT AND 1ST FLOOR LOBBY AREA. AS PER CODE. | $2,850 | Oct 26, 2020 |
| COM2020 | AMEND PERMIT: ADD HVAC AND PLUMBER CONTRACTOR .(ORIGINAL PERMIT:COM2020-01628:INTERIOR ALTERATIONS 3RD RENOVATIONS TO EXISTING OFFICE BUILDING FOR NEW TENANT, 1ST FLOOR: NON-STRUCTURAL RECONFIGURED LOBBY SECURITY AS PER PLANS AS PER CODE. SEPARATE PERMIT WILL BE REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM.) Original Permit Description:(COM2020-01628) INTERIOR ALTERATIONS 3RD RENOVATIONS TO EXISTING OFFICE BUILDING FOR NEW TENANT, 1ST FLOOR: NON-STRUCTURAL RECONFIGURED LOBBY SECURITY AS PER PLANS AS PER CODE. SEPARATE PERMIT WILL BE REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM. | — | Oct 16, 2020 |
| COM2020 | AMEND PERMIT: ADD ELECTRICAL CONTRACTOR .(ORIGINAL PERMIT:COM2020-01628:INTERIOR ALTERATIONS 3RD RENOVATIONS TO EXISTING OFFICE BUILDING FOR NEW TENANT, 1ST FLOOR: NON-STRUCTURAL RECONFIGURED LOBBY SECURITY AS PER PLANS AS PER CODE. SEPARATE PERMIT WILL BE REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM.) Original Permit Description:(COM2020-01628) INTERIOR ALTERATIONS 3RD RENOVATIONS TO EXISTING OFFICE BUILDING FOR NEW TENANT, 1ST FLOOR: NON-STRUCTURAL RECONFIGURED LOBBY SECURITY AS PER PLANS AS PER CODE. SEPARATE PERMIT WILL BE REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM. | — | Oct 6, 2020 |
| COM2020 | REMOVE (3) EXISTING ANTENNAS AND INSTALL (3) NEW ANTENNAS AND (3) NEW RRHS AS PER PLANS AS PER CODE. | $25,000 | Aug 28, 2020 |
| COM2020 | INTERIOR ALTERATIONS 3RD RENOVATIONS TO EXISTING OFFICE BUILDING FOR NEW TENANT, 1ST FLOOR: NON-STRUCTURAL RECONFIGURED LOBBY SECURITY AS PER PLANS AS PER CODE. SEPARATE PERMIT WILL BE REQUIRED FOR SPRINKLER AND FIRE ALARM SYSTEM. | $1,200,000 | Jul 31, 2020 |
| COM2020 | AMEND PERMIT: ADD ELECTRICAL CONTRACTOR . (ORIGINAL PERMIT:COM2019-02350:VERIZON WILL REMOVE (9) ANTENNAS AND INSTALL (8) ANTENNAS, (2) IN THE GAMMA SECTOR AND (3) EACH IN THE ALPHA AND BETA SECTORS. VERIZON WILL ALSO BE INSTALLING SUPPORT EQUIPMENT. AS PER PLANS AND AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET THEN SEPARATE PERMIT WILL BE REQUIRED.) Original Permit Description:(COM2019-02350) VERIZON WILL REMOVE (9) ANTENNAS AND INSTALL (8) ANTENNAS, (2) IN THE GAMMA SECTOR AND (3) EACH IN THE ALPHA AND BETA SECTORS. VERIZON WILL ALSO BE INSTALLING SUPPORT EQUIPMENT. AS PER PLANS AND AS PER CODE. IF INSTALLING SUPPRESSION SYSTEM IN EQUIPMENT CABINET THEN SEPARATE PERMIT WILL BE REQUIRED. | — | Feb 11, 2020 |
| COM2019 | amend permit: change prime contractor.(original permit:com2019-02350:verizon will remove (9) antennas and install (8) antennas, (2) in the gamma sector and (3) each in the alpha and beta sectors. verizon will also be installing support equipment. as per plans and as per code. if installing suppression system in equipment cabinet then separate permit will be required.) original permit description:(com2019-02350) verizon will remove (9) antennas and install (8) antennas, (2) in the gamma sector and (3) each in the alpha and beta sectors. verizon will also be installing support equipment. as per plans and as per code. if installing suppression system in equipment cabinet then separate permit will be required. | — | Nov 8, 2019 |
| COM2019 | extend original permit.(original permit:com2018-04146:installing (1) dish as per plans as per code.) | — | Oct 9, 2019 |
| COM2019 | verizon will remove (9) antennas and install (8) antennas, (2) in the gamma sector and (3) each in the alpha and beta sectors. verizon will also be installing support equipment. as per plans and as per code. if installing suppression system in equipment cabinet then separate permit will be required. | $12,000 | Sep 27, 2019 |
| COM2018 | installing (1) dish as per plans as per code. | $5,000 | Apr 17, 2019 |
Violations
2| Kind | Category | Status | Date |
|---|---|---|---|
| service_request | HCD-Sanitation Property | Closed | Mar 9, 2026 |
| service_request | SW-Dirty Alley | Closed | Jan 16, 2026 |
Inspections
0No inspections on record.
Nearby recent activity
- violation: PM 306.1Jun 15, 2026 · 112 m · 521 SAINT PAUL ST
- violation: HCD-Sanitation PropertyJun 11, 2026 · 112 m · 521 SAINT PAUL ST
- violation: HCD-Sanitation PropertyJun 11, 2026 · 126 m · 521 SAINT PAUL ST
- permit: BUSEApr 2, 2026 · 120 m · 501 SAINT PAUL PL
- permit: BCCMMar 31, 2026 · 48 m · 401 N CALVERT ST
- violation: BC 123.8.2Mar 3, 2026 · 112 m · 521 SAINT PAUL ST
- violation: BC 123.8.2Mar 3, 2026 · 112 m · 521 SAINT PAUL ST
- violation: BC 123.8.2Mar 3, 2026 · 112 m · 521 SAINT PAUL ST
- permit: BUSEFeb 17, 2026 · 120 m · 501 SAINT PAUL PL
- permit: COM2025Aug 26, 2025 · 136 m · 426 N CALVERT ST
Records marked with * are matched by address, not a direct account link. Data is informational only.
Data freshness: city-311: 2026-07-12; city-ecb-citations: 2026-07-12; city-housing-inspections: 2026-07-12; city-permits: 2026-07-12; city-real-property: 2026-07-12; city-vbn: 2026-07-12; county-permits: 2026-07-12; sdat-properties: 2026-07-12;
Official sources: Maryland SDAT, Baltimore City permits.