Baltimore County · 21227
4100 MAPLE AVE
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- Total assessment
- $1,363,600
- Land use
- Commercial (C)
Assessment
Additional detail for this property — owner, sale history, and structure information — isn't available yet.
| Land use | Commercial (C) |
|---|---|
| Total assessment | $1,363,600 (cycle 2025) |
Permits
16| Type | Status | Description | Cost | Issued |
|---|---|---|---|---|
| Comm. Permit - Retaining Wall | ISSUE | Construct a 20' high retaining wall 50' long in commercial property. Fence or railing is required. Subject to: must follow all retaining wall checklist and construction phase service requirements. Checklists attached. | $100,000 | Apr 2, 2025 |
| Comm. Permit - Retaining Wall | ISSUE | Construction of 4 site retaining walls: MSE Wall #1: 90' long with max. height 8.33'. MSE Wall #2: 260' long with max. height 12.33'. MSE Wall #3: 245' long with max. height of 10.3'. Magnumstone Wall #4 with partial CIP Wall #4: 337'. long with max. height 20'. Fence or railing is required. Subject to: must follow all retaining wall checklist and construction phase service requirements. Checklists attached. | $0 | Mar 2, 2025 |
| Res. Permit - Storm Water | ISSUE | Stormwater management of 25.26 AC for proposed residential development. Using Tax ID Numbers 2500015832, 1600007730, & 2500015833. No construction to begin until pre-construction meeting. Failure to comply will result in penalties. Schedule your pre-construction meeting in your portal. This permit cancels and replaces CEN23-000175. No work to be completed in the SHA drainage area without the access permit from SHA. | $2,673,599 | Jul 19, 2024 |
| Res. Permit - Grading | ISSUE | Grading and paving for proposed residential development 1,100,387SF. Also using tax numbers 2500015832, 1600007730 and 2500015833. No construction to begin until pre-construction meeting. Failure to comply will result in penalties. Schedule your pre-construction meeting in your portal. This permit cancels and replaces CEN23-000174, change in LOD. Refer to C23-02468 for razing. No work to be completed in the SHA drainage area without the access permit from SHA. | $55,020 | Jul 19, 2024 |
| Comm. Permit - Razing | ISSUE | Raze reform school 170,000sf, will be torn down; foundation will remain. Debris to be hauled to approved sanitary landfill in accordance with applicable Baltimore County site regulations. Built 1964. Refer to CP22-00572 for sewer cap-off. Pest control letter attached. Permit expires 90 days from date of issue. This permit replaces expired permit # C22-02880. | $800,000 | Jan 10, 2024 |
| Comm. Permit - Razing | ISSUE | Raze reform school 170,000sf, will be torn down; foundation will remain. Debris to be hauled to approved sanitary landfill in accordance with applicable Baltimore County site regulations. Built? Sewer to be capped. Refer to CP22-00572 for sewer cap-off. Permit expires 90 days from date of issue. | — | Aug 28, 2023 |
| Comm. Permit - Grading/Temp Stockpile | ISSUE | Temporary stock pile 19,208SF in tennis court area to reduce sediment tracking. Permit will not be extended after the expiration date. Prior to expiration date, stockpile areas must be returned to the original grade and stabilized with permanent vegetation. | — | Jul 18, 2022 |
| Comm. Permit - Antennas | ISSUE | REMOVE (3) AND ADD (3) ANTENNAS, REMOVE AND | REPLACE (3) RRU'S, ADD (1) EQUIPMENT CABINET | AND ADD (1) BATTERY CABINET AND ASSOCIATED | EQUIPMENT ON EXISTING TOWER. PER PLANS. | S.P.O.S ALB | — | Sep 10, 2020 |
| Comm. Permit - Antennas | ISSUE | REMOVE AND REPLACE 1 MICROWAVE DISH ON EXISTING | WATER TOWER AND UPGRAD ANCILLARY EQUIPMENT PER | PLANS. NO CHANGE IN HEIGHT (96' HIGH) OR | LOCATION. S.P.O.S ALB | — | Oct 30, 2019 |
| Comm. Permit - Antennas | ISSUE | REMOVE(3)ANTENNAS + RADIOS + REPLACE W/(3) NEW | ANTENNAS + ASSOCIATED CABLING AS PER PLANS. | NO CHANGE IN HEIGHT ON EXISTING WATER TOWER. | SEALED PLANS ON SITE,CONST PLANS WAIVED-YAP | — | Nov 28, 2018 |
| Comm. Permit - Antennas | ISSUE | REMOVE & INSTALL SIX (6) ANTENNAS ON EXISTING | WATER TANK PER PLANS. MFG INSTRUCTIONS & | STRUCTURAL ENGINEERING LETTER ATTACHED. HEIGHT | OF WATER TANK 114FT. KEEP SEALED CONSTRUCTION | PLANS ON SITE. OK TO WAIVE PLANS:YAP. | — | Sep 7, 2018 |
| Comm. Permit - Antennas | ISSUE | REMOVE 3 ANTENNAS AND INSTALL 3 ANTENNAS AND | CABLE ON EX WATER TANK.NO CHANGE IN HEIGHT | SIGNED/SEALED PLANS ON SITE-YAP | — | Feb 21, 2017 |
| Comm. Permit - Antennas | ISSUE | INSTALL THREE (3) ANTENNAS ON AN EXISTING | WATER TANK PER PLANS. KEEP SEALED CONSTRUCTION | PLANS ON SITE; WAIVE PLANS: YAP. | — | Nov 18, 2014 |
| Comm. Permit - Antennas | ISSUE | INSTALL 3 PANEL ANTENNAS ON EXISTING WATER | TANK, NO CHANGE IN HEIGHT PER PLANS. | KEEP SEALED CONSTRUCTION PLANS ON SITE. WAIVE | PLANS: YAP | — | Mar 11, 2014 |
| Comm. Permit - New Structure/Shell | ISSUE | CONSTRUCT COOLING TOWER ON PAD PER PLANS. | 29'4"X27'8"X10'9"=811SF | — | Oct 22, 2013 |
| Comm. Permit - Alteration * | CLOSED | INTERIOR ALTERATIONS TO CREATE NEW CLASSROOMS FOR CHILDHOOD CENTER. TO INCLUDE: DRYWALL, MTL STUD PARTITIOSN, MODIFY, HVAC, DOORWAY, & FINISHES. 200SF OVERALL, SEPARATE PERMIT REQD FOR ANY ADDL WORK. SEALED CONSTRUCTION ON SITE CONSTRUCTION PLAN WAIVED PER YAP. : CONST 0 PLOT 0 R PLAT 0 DATA 0 ELEC YES PLUMB NO | — | — |
Nearby recent activity
- permit: Res. Permit - New DwellingJul 10, 2026 · 43 m · 4112 CATHERINE LN
- permit: Res. Permit - New DwellingJul 10, 2026 · 49 m · 4114 CATHERINE LN
- permit: Res. Permit - New DwellingJul 10, 2026 · 55 m · 4116 CATHERINE LN
- permit: Res. Permit - New DwellingJul 9, 2026 · 50 m · 4101 MAPLE AVE
- permit: Res. Permit - DeckJul 9, 2026 · 78 m · 1609 FORGE WAY
- permit: Res. Permit - DeckJul 9, 2026 · 78 m · 1607 FORGE WAY
- permit: Res. Permit - DeckJul 9, 2026 · 81 m · 1605 FORGE WAY
- permit: Res. Permit - DeckJul 9, 2026 · 82 m · 1603 FORGE WAY
- permit: Res. Permit - DeckJul 8, 2026 · 75 m · 1615 FORGE WAY
- permit: Res. Permit - DeckJul 8, 2026 · 75 m · 1615 FORGE WAY
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: 2026-07-11; sdat-properties: 2026-07-12;
Official sources: Maryland SDAT, Baltimore City permits.