# Building permits at 400 Denison St, Baltimore, MD 15 permits on record here. The newest, Jul 1: Permit, no description from the city. Within a quarter mile, the city has issued 46 more permits since May 1. ## At this address | Date | Type | Work | Cost | Permit | |---|---|---|---|---| | Jul 1, 2026 | Other | | $500 | [BRCM-26-013574](https://nearbypermits.com/baltimore/permit/BRCM-26-013574/) | | Feb 9, 2024 | Other | use as a single family dwelling | Not listed | [USE2024-50380](https://nearbypermits.com/baltimore/permit/USE2024-50380/) | | Oct 18, 2022 | Alteration or repair | reinstate original permit.(original permit:com2020-83357:non-structural alterations - sq ft 689- remove/replace drywall; trim; baseboard; r21 insulation on existing studs; r49 insulation in ceilings; exterior - replace 7 windows, 3 exterior doors; 11 interior doors same size and location; paint exte | Not listed | [COM2022-84654](https://nearbypermits.com/baltimore/permit/COM2022-84654/) | | Aug 3, 2022 | Plumbing | reinstate original permit.(original permit:com2020-80826:install (20) # branch circuits/feeders, (1) 150 amps electric service up to 600v (#amps), (1) # electric water heater, (8) # plumbing fixtures, (1) # sanitary connection (reconstruction0, (1) # water service pipe (reconstruction), (1) 30000 bt | Not listed | [COM2022-76175](https://nearbypermits.com/baltimore/permit/COM2022-76175/) | | Aug 3, 2022 | Alteration or repair | reinstate original permit.(original permit:com2020-83357:non-structural alterations - sq ft 689- remove/replace drywall; trim; baseboard; r21 insulation on existing studs; r49 insulation in ceilings; exterior - replace 7 windows, 3 exterior doors; 11 interior doors same size and location; paint exte | Not listed | [COM2022-76173](https://nearbypermits.com/baltimore/permit/COM2022-76173/) | | Aug 2, 2022 | Mechanical (HVAC) | reinstate original permit.(original permit:com2020-83284:install (1) 30000 btu air-con system, heat pump, (1) # new distribution system (1-2 family), (1) 90000 btu fuel-burning equip(furnace), (2) 50 cfm exhaust systems as per code.) original permit description:(com2020-83284) install (1) 30000 btu | Not listed | [COM2022-75960](https://nearbypermits.com/baltimore/permit/COM2022-75960/) | | Jun 27, 2022 | Plumbing | reinstate original permit.(original permit:com2020-80826:install (20) # branch circuits/feeders, (1) 150 amps electric service up to 600v (#amps), (1) # electric water heater, (8) # plumbing fixtures, (1) # sanitary connection (reconstruction0, (1) # water service pipe (reconstruction), (1) 30000 bt | Not listed | [COM2022-71656](https://nearbypermits.com/baltimore/permit/COM2022-71656/) | | Jun 27, 2022 | Alteration or repair | reinstate original permit.(original permit:com2020-83357:non-structural alterations - sq ft 689- remove/replace drywall; trim; baseboard; r21 insulation on existing studs; r49 insulation in ceilings; exterior - replace 7 windows, 3 exterior doors; 11 interior doors same size and location; paint exte | Not listed | [COM2022-71655](https://nearbypermits.com/baltimore/permit/COM2022-71655/) | | Jun 27, 2022 | Mechanical (HVAC) | reinstate original permit.(original permit:com2020-83284:install (1) 30000 btu air-con system, heat pump, (1) # new distribution system (1-2 family), (1) 90000 btu fuel-burning equip(furnace), (2) 50 cfm exhaust systems as per code.) original permit description:(com2020-83284) install (1) 30000 btu | Not listed | [COM2022-71654](https://nearbypermits.com/baltimore/permit/COM2022-71654/) | | Jul 9, 2021 | Mechanical (HVAC) | extend original permit.(original permit:com2020-83284:install (1) 30000 btu air-con system, heat pump, (1) # new distribution system (1-2 family), (1) 90000 btu fuel-burning equip(furnace), (2) 50 cfm exhaust systems as per code.) original permit description:(com2020-83284) install (1) 30000 btu air | Not listed | [COM2021-70955](https://nearbypermits.com/baltimore/permit/COM2021-70955/) | | Jul 8, 2021 | Alteration or repair | extend original permit.(original permit:com2020-83357:non-structural alterations - sq ft 689- remove/replace drywall; trim; baseboard; r21 insulation on existing studs; r49 insulation in ceilings; exterior - replace 7 windows, 3 exterior doors; 11 interior doors same size and location; paint exterio | Not listed | [COM2021-70802](https://nearbypermits.com/baltimore/permit/COM2021-70802/) | | Jun 12, 2021 | Plumbing | reinstate original permit.(original permit:com2020-80826:install (20) # branch circuits/feeders, (1) 150 amps electric service up to 600v (#amps), (1) # electric water heater, (8) # plumbing fixtures, (1) # sanitary connection (reconstruction0, (1) # water service pipe (reconstruction), (1) 30000 bt | Not listed | [COM2021-67142](https://nearbypermits.com/baltimore/permit/COM2021-67142/) | | Dec 12, 2020 | Alteration or repair | non-structural alterations - sq ft 689- remove/replace drywall; trim; baseboard; r21 insulation on existing studs; r49 insulation in ceilings; exterior - replace 7 windows, 3 exterior doors; 11 interior doors same size and location; paint exterior; replace downspouts and gutters as per code | $5,500 | [COM2020-83357](https://nearbypermits.com/baltimore/permit/COM2020-83357/) | | Nov 3, 2020 | Mechanical (HVAC) | install (1) 30000 btu air-con system, heat pump, (1) # new distribution system (1-2 family), (1) 90000 btu fuel-burning equip(furnace), (2) 50 cfm exhaust systems as per code. | $3,800 | [COM2020-83284](https://nearbypermits.com/baltimore/permit/COM2020-83284/) | | Oct 15, 2020 | Plumbing | install (20) # branch circuits/feeders, (1) 150 amps electric service up to 600v (#amps), (1) # electric water heater, (8) # plumbing fixtures, (1) # sanitary connection (reconstruction0, (1) # water service pipe (reconstruction), (1) 30000 btu fuel-burning equip as per code. | $4,500 | [COM2020-80826](https://nearbypermits.com/baltimore/permit/COM2020-80826/) | ## Within ¼ mi since May 1, 2026 46 permits in the circle. From our copy of the city's data (last 24 months). ### Next door (under 250 ft), 5 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 1, 2026 | [3404 W Mulberry St](https://nearbypermits.com/baltimore/address/3404-w-mulberry-st/) | 25 ft SW | Fence, wall or deck | Tear down existing 8'X10' front porch Build new porch in kind (no roof work) | $4,000 | [BRCM-26-019614](https://nearbypermits.com/baltimore/permit/BRCM-26-019614/) | | Sep 15, 2026 | [411 N Edgewood St](https://nearbypermits.com/baltimore/address/411-n-edgewood-st/) | 130 ft NW | Electrical | Replace 100amp service line | $200 | [BRCM-26-018854](https://nearbypermits.com/baltimore/permit/BRCM-26-018854/) | | Jul 16, 2026 | [409 N Edgewood St](https://nearbypermits.com/baltimore/address/409-n-edgewood-st/) | 130 ft W | Electrical | Replace 100-amp service line | $1,000 | [BRCM-26-014716](https://nearbypermits.com/baltimore/permit/BRCM-26-014716/) | | May 13, 2026 | [409 Denison St](https://nearbypermits.com/baltimore/address/409-denison-st/) | 150 ft E | Plumbing | Remove old boiler. Install 105,000 btu gas boiler with 1/2 backflow device. | $15,766 | [BRCM-26-010161](https://nearbypermits.com/baltimore/permit/BRCM-26-010161/) | | May 6, 2026 | [329 N Edgewood St](https://nearbypermits.com/baltimore/address/329-n-edgewood-st/) | 200 ft SW | Other | | $8,427 | [BRCM-26-009467](https://nearbypermits.com/baltimore/permit/BRCM-26-009467/) | ### This block (250 to 1,000 ft), 32 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Oct 7, 2026 | [302 N Grantley St](https://nearbypermits.com/baltimore/address/302-n-grantley-st/) | 740 ft SW | Other | | $200 | [BRCM-26-020457](https://nearbypermits.com/baltimore/permit/BRCM-26-020457/) | | Oct 1, 2026 | [3302 W Franklin St](https://nearbypermits.com/baltimore/address/3302-w-franklin-st/) | 540 ft NE | Fence, wall or deck | category I - 989 sq ft-Scope of work: Interior alterations to include: Framing to create new partition walls, install new drywall, install new trim, install new interior and exterior doors, install new finishes, baseboard/trim, paint interior and exterior; install gutters and downspouts; cabinets an | $7,500 | [BRCM-26-020006](https://nearbypermits.com/baltimore/permit/BRCM-26-020006/) | | Sep 15, 2026 | [509 N Edgewood St](https://nearbypermits.com/baltimore/address/509-n-edgewood-st/) | 380 ft N | Other | Gas - test, stove | $1,200 | [BRCM-26-018871](https://nearbypermits.com/baltimore/permit/BRCM-26-018871/) | | Sep 15, 2026 | [220 N Culver St](https://nearbypermits.com/baltimore/address/220-n-culver-st/) | 990 ft S | Electrical | Install (1) 300 amps electric service up to 600v (#amps), (3) 100 amps existing electrical meters as per code. | $1,500 | [BRCM-26-018862](https://nearbypermits.com/baltimore/permit/BRCM-26-018862/) | | Sep 14, 2026 | [3429 Edmondson Ave](https://nearbypermits.com/baltimore/address/3429-edmondson-ave/) | 610 ft N | Plumbing | Water heater replacement | $1,000 | [BRCM-26-018727](https://nearbypermits.com/baltimore/permit/BRCM-26-018727/) | | Sep 11, 2026 | [217 N Edgewood St](https://nearbypermits.com/baltimore/address/217-n-edgewood-st/) | 580 ft S | Plumbing | Replace 40-gallon 38,000 Btu gas water heater with the same. | Not listed | [BRCM-26-018540](https://nearbypermits.com/baltimore/permit/BRCM-26-018540/) | | Sep 2, 2026 | [407 Gwynn Ave](https://nearbypermits.com/baltimore/address/407-gwynn-ave/) | 360 ft E | Plumbing | Replace 40-gallon 38,000 Btu gas water heater with the same. | $2,303 | [BRCM-26-017904](https://nearbypermits.com/baltimore/permit/BRCM-26-017904/) | | Aug 25, 2026 | [221 Denison St](https://nearbypermits.com/baltimore/address/221-denison-st/) | 650 ft S | Mechanical (HVAC) | Install 2 ton heat pump, air handler 7kw this permit replaces expired mechanical permit # com2024-93936 | $10,500 | [BRCM-26-017459](https://nearbypermits.com/baltimore/permit/BRCM-26-017459/) | | Aug 21, 2026 | [326 N Grantley St](https://nearbypermits.com/baltimore/address/326-n-grantley-st/) | 680 ft W | Alteration or repair | Repl r sec w/ storm / replace exterior door thru the home depot - same size, $500 - savage, nakia d. H: | $500 | [BRCM-26-017190](https://nearbypermits.com/baltimore/permit/BRCM-26-017190/) | | Aug 18, 2026 | [321 Denison St](https://nearbypermits.com/baltimore/address/321-denison-st/) | 420 ft S | Plumbing | Replacement 50 Gal Natural Gas 40,000 BTU Water Heater Pan Ball Valve Expansion Tank | $3,031 | [BRCM-26-011475](https://nearbypermits.com/baltimore/permit/BRCM-26-011475/) | | Aug 11, 2026 | [205 N Edgewood St](https://nearbypermits.com/baltimore/address/205-n-edgewood-st/) | 710 ft SW | Alteration or repair | Renewal by andersen to remove and replace 1 entry door and 1 storm door, no structural changes, no widening of existing openings | $3,885 | [BRCM-26-016106](https://nearbypermits.com/baltimore/permit/BRCM-26-016106/) | | Jul 30, 2026 | [3607 W Saratoga St](https://nearbypermits.com/baltimore/address/3607-w-saratoga-st/) | 900 ft SW | Alteration or repair | front door fix frame and brick molding paint molding put in deadbolt and fix trim on front bottom window repair and paint Install new back exterior door and brick molding paint door and molding fix with new 12 foot downspout and install 2 hangers white in color. Repair first step going in back door | $4,000 | [BRCM-26-005994](https://nearbypermits.com/baltimore/permit/BRCM-26-005994/) | | Jul 29, 2026 | [3521 Edmondson Ave](https://nearbypermits.com/baltimore/address/3521-edmondson-ave/) | 760 ft NW | Electrical | Scooper work plumbing 4-toilets, 4-sinks, 2-tub, 2-shower, -1-kitchen sink, 1-washer, 1- electrical water heater,Gas work - one Gas furnace 80,000BTU, one stove 14,000BTU, Electrical work 1-200amp panel with service, outlets -35- lights 25, smoke detector -5, 25- circuits, 4-applinces, HVAC work one | $14,500 | [BRCM-26-015473](https://nearbypermits.com/baltimore/permit/BRCM-26-015473/) | | Jul 24, 2026 | [3321 Edmondson Ave](https://nearbypermits.com/baltimore/address/3321-edmondson-ave/) | 710 ft NE | Electrical | Scooper work plumbing replaces 4-toilets, 4-sinks, 2-tub, 2-shower, -1-kitchen sink, 1-washer, 1- electrical water heater, Gas - one Gas furnace 80,000, one stove Electrical work 1-200amp panel with service, 26 circuits, 57-fixtures HVAC work one A/c unit 3.5 tons, one gas furnace, ducts, 5- exhaust | $12,800 | [BRCM-26-014890](https://nearbypermits.com/baltimore/permit/BRCM-26-014890/) | | Jul 15, 2026 | [3521 Edmondson Ave](https://nearbypermits.com/baltimore/address/3521-edmondson-ave/) | 760 ft NW | Alteration or repair | Scope of work Interior non-structural demolition will be performed throughout the residence, including removal of all interior drywall, all existing flooring (carpet, tile and other finishes), all bathroom fixtures, all kitchen and bathroom cabinets, non-structural partition walls, the concrete slab | $7,500 | [BRCM-26-014594](https://nearbypermits.com/baltimore/permit/BRCM-26-014594/) | | Jul 9, 2026 | [313 N Edgewood St](https://nearbypermits.com/baltimore/address/313-n-edgewood-st/) | 290 ft S | Mechanical (HVAC) | Replacement of Air Conditioner and Gas Furnace | $6,200 | [BRCM-26-014175](https://nearbypermits.com/baltimore/permit/BRCM-26-014175/) | | Jul 8, 2026 | [3302 W Franklin St](https://nearbypermits.com/baltimore/address/3302-w-franklin-st/) | 540 ft NE | Electrical | Install 200 amp service and 26 circuits gas test, 120000 btu, 80k furnace, 40k stove, 30k btu dryer, 400 exhaust 14 plumbing fixtures water and waste reconstruction, 2.5 ton condenser, new duct work. | $8,200 | [BRCM-26-013624](https://nearbypermits.com/baltimore/permit/BRCM-26-013624/) | | Jul 6, 2026 | [3602 W Saratoga St](https://nearbypermits.com/baltimore/address/3602-w-saratoga-st/) | 820 ft SW | Alteration or repair | Door Replacement. Like to like, same opening. No structural Change involved. | $5,364 | [BRCM-26-013909](https://nearbypermits.com/baltimore/permit/BRCM-26-013909/) | | Jul 6, 2026 | [605 Denison St](https://nearbypermits.com/baltimore/address/605-denison-st/) | 990 ft N | Plumbing | Gas line Pressure test | $1,500 | [BRCM-26-013904](https://nearbypermits.com/baltimore/permit/BRCM-26-013904/) | | Jul 6, 2026 | [418 Gwynn Ave](https://nearbypermits.com/baltimore/address/418-gwynn-ave/) | 270 ft NE | Other | | $500 | [BRCM-26-013107](https://nearbypermits.com/baltimore/permit/BRCM-26-013107/) | | Jul 1, 2026 | [3318 Edmondson Ave](https://nearbypermits.com/baltimore/address/3318-edmondson-ave/) | 910 ft NE | Other | | $1,600 | [BRCM-26-012163](https://nearbypermits.com/baltimore/permit/BRCM-26-012163/) | | Jun 29, 2026 | [338 Gwynn Ave](https://nearbypermits.com/baltimore/address/338-gwynn-ave/) | 350 ft SE | Solar | This project involves the installation of a roof-mounted 6.08KW DC/ 7.600KW AC residential solar PV system under Civic Works Baltimore Shines Program (ARPA-funded), utilizing 15 LONGI SOLAR - LR5-54HPB-405M MODULES (405W) modules paired with 15 SolarEdge U650 power optimizers for enhanced module-lev | $1,800 | [BRCM-26-012604](https://nearbypermits.com/baltimore/permit/BRCM-26-012604/) | | Jun 23, 2026 | [210 N Monastery Ave](https://nearbypermits.com/baltimore/address/210-n-monastery-ave/) | 910 ft S | Other | | $9,000 | [BRCM-26-012084](https://nearbypermits.com/baltimore/permit/BRCM-26-012084/) | | Jun 22, 2026 | [3306 W Franklin St](https://nearbypermits.com/baltimore/address/3306-w-franklin-st/) | 510 ft NE | Plumbing | water heater replacement | $3,000 | [BRCM-26-012995](https://nearbypermits.com/baltimore/permit/BRCM-26-012995/) | | Jun 10, 2026 | [3306 W Franklin St](https://nearbypermits.com/baltimore/address/3306-w-franklin-st/) | 510 ft NE | Electrical | 200 amp service,5 circuits | $2,500 | [BRCM-26-012196](https://nearbypermits.com/baltimore/permit/BRCM-26-012196/) | | Jun 8, 2026 | [3513 Edmondson Ave](https://nearbypermits.com/baltimore/address/3513-edmondson-ave/) | 710 ft NW | Other | Replace Meter - 100A Service | $1,000 | [BRCM-26-011142](https://nearbypermits.com/baltimore/permit/BRCM-26-011142/) | | Jun 4, 2026 | [329 N Grantley St](https://nearbypermits.com/baltimore/address/329-n-grantley-st/) | 560 ft SW | Plumbing | Replace 30-gallon 30,000 Btu gas water heater with the same. | $2,162 | [BRCM-26-011761](https://nearbypermits.com/baltimore/permit/BRCM-26-011761/) | | Jun 3, 2026 | [3415 Edmondson Ave](https://nearbypermits.com/baltimore/address/3415-edmondson-ave/) | 620 ft N | Electrical | Install a new 200-amp service 1- new socket and wire with weather head 2- ground system 3- exterior main disconnect 200 amp | $3,000 | [BRCM-26-010059](https://nearbypermits.com/baltimore/permit/BRCM-26-010059/) | | May 19, 2026 | [610 Denison St](https://nearbypermits.com/baltimore/address/610-denison-st/) | 970 ft N | Plumbing | gas test only | $850 | [BRCM-26-010639](https://nearbypermits.com/baltimore/permit/BRCM-26-010639/) | | May 19, 2026 | [3306 W Franklin St](https://nearbypermits.com/baltimore/address/3306-w-franklin-st/) | 510 ft NE | Other | | $45,000 | [BRCM-26-009833](https://nearbypermits.com/baltimore/permit/BRCM-26-009833/) | | May 15, 2026 | [3306 W Franklin St](https://nearbypermits.com/baltimore/address/3306-w-franklin-st/) | 510 ft NE | Mechanical (HVAC) | 3ton Heat pump installation and distribution system | $14,500 | [BRCM-26-009942](https://nearbypermits.com/baltimore/permit/BRCM-26-009942/) | | May 12, 2026 | [312 Denison St](https://nearbypermits.com/baltimore/address/312-denison-st/) | 380 ft S | Other | | $500 | [BRCM-26-009638](https://nearbypermits.com/baltimore/permit/BRCM-26-009638/) | ### Farther (1,000 ft to ¼ mi), 9 permits | Date | Address | Distance | Type | Work | Cost | Permit | |---|---|---|---|---|---|---| | Sep 21, 2026 | [111 Allendale St](https://nearbypermits.com/baltimore/address/111-allendale-st/) | 0.24 mi SW | Roofing | Roof Shingle Replacement. 7 sheets of sheathing included. No structural changes. 10-yd dumpster in driveway. As per plans and as per code. | $20,697 | [BRCM-26-018067](https://nearbypermits.com/baltimore/permit/BRCM-26-018067/) | | Sep 13, 2026 | [612 N Edgewood St](https://nearbypermits.com/baltimore/address/612-n-edgewood-st/) | 0.20 mi N | Plumbing | Emergency water service | $2,000 | [BRCM-26-018510](https://nearbypermits.com/baltimore/permit/BRCM-26-018510/) | | Sep 10, 2026 | [3711 Edmondson Ave](https://nearbypermits.com/baltimore/address/3711-edmondson-ave/) | 0.24 mi NW | Plumbing | Replace 40-gallon 38,000 Btu gas water heater with the same. | $3,583 | [BRCM-26-018475](https://nearbypermits.com/baltimore/permit/BRCM-26-018475/) | | Sep 2, 2026 | [116 Denison St](https://nearbypermits.com/baltimore/address/116-denison-st/) | 0.23 mi SW | Roofing | STRUCTURAL ALTERATIONS - 989 SQ FT Replace missing bricks at the top of the rear of building approx. Repair 2 cracks in wall approx. Demo flat portion of the roof approx. 1,300 sq ft. Install approx. 5 2x12 joists and 10 sheets of 3/4 fire rated plywood. Install base sheet pattern nailed with steel | $140,000 | [BRCM-26-017950](https://nearbypermits.com/baltimore/permit/BRCM-26-017950/) | | Sep 1, 2026 | [139 N Monastery Ave](https://nearbypermits.com/baltimore/address/139-n-monastery-ave/) | 0.24 mi S | Other | update kitchen and bathroom floor and painting | $4,000 | [BRCM-26-016223](https://nearbypermits.com/baltimore/permit/BRCM-26-016223/) | | Jun 19, 2026 | [504 Allendale St](https://nearbypermits.com/baltimore/address/504-allendale-st/) | 0.21 mi W | Mechanical (HVAC) | Replace two 1.5 ton mini split heat pumps | $34,000 | [BRCM-26-012881](https://nearbypermits.com/baltimore/permit/BRCM-26-012881/) | | Jun 4, 2026 | [3707 W Mulberry St](https://nearbypermits.com/baltimore/address/3707-w-mulberry-st/) | 0.22 mi W | Plumbing | Replace 40-gallon 40,000 Btu gas water heater with the same. | $2,217 | [BRCM-26-011685](https://nearbypermits.com/baltimore/permit/BRCM-26-011685/) | | May 12, 2026 | [3705 W Franklin St](https://nearbypermits.com/baltimore/address/3705-w-franklin-st/) | 0.21 mi W | Plumbing | Gas range replacement | $140 | [BRCM-26-009257](https://nearbypermits.com/baltimore/permit/BRCM-26-009257/) | | May 7, 2026 | [622 Denison St](https://nearbypermits.com/baltimore/address/622-denison-st/) | 0.20 mi N | Electrical | Install 7 branch circuits /feeders as per code. | $3,000 | [BRCM-26-009652](https://nearbypermits.com/baltimore/permit/BRCM-26-009652/) | ## Zoning requests nearby We don't list zoning cases for Baltimore yet. Look them up on the city's Baltimore Municipal Zoning and Appeals Board page: https://www.baltimorecity.gov/mayor/our-work/boards-commissions/boards/baltimore-municipal-zoning-and-appeals-board-bmza ## More on this street Other addresses on Denison St with permits, nearest house number first: - [409 Denison St](https://nearbypermits.com/baltimore/address/409-denison-st/): newest permit May 13, 2026 - [341 Denison St](https://nearbypermits.com/baltimore/address/341-denison-st/): newest permit Oct 30, 2025 - [325 Denison St](https://nearbypermits.com/baltimore/address/325-denison-st/): newest permit Jul 22, 2025 - [321 Denison St](https://nearbypermits.com/baltimore/address/321-denison-st/): newest permit Aug 18, 2026 - [320 Denison St](https://nearbypermits.com/baltimore/address/320-denison-st/): newest permit Jan 13, 2026 - [314 Denison St](https://nearbypermits.com/baltimore/address/314-denison-st/): newest permit Mar 5, 2025 - [312 Denison St](https://nearbypermits.com/baltimore/address/312-denison-st/): newest permit May 12, 2026 - [513 Denison St](https://nearbypermits.com/baltimore/address/513-denison-st/): newest permit Dec 18, 2025 - [525 Denison St](https://nearbypermits.com/baltimore/address/525-denison-st/): newest permit Apr 14, 2026 - [226 Denison St](https://nearbypermits.com/baltimore/address/226-denison-st/): newest permit Apr 22, 2025 --- Source: Baltimore Department of Housing and Community Development permit data (https://www.arcgis.com/home/item.html?id=189e6d1c65df4e13b38c0027cee574f6), City of Baltimore, CC BY 3.0 (https://creativecommons.org/licenses/by/3.0/). Checked 2026-10-08 15:36 UTC. Nearby Permits, https://nearbypermits.com. JSON API and MCP server: https://nearbypermits.com/developers/ Map, all 15 permits at this address and 46 nearby: https://nearbypermits.com/baltimore/address/400-denison-st/