3235 18th Street
Mission · San Francisco, CA 94110
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1930
Built as an industrial building, concrete construction, recorded as occupied by Pacific Gas & electric Automotive Department.
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Dec 1985
Partial demolition and construction of new non-bearing.
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Dec 2004
Installation of an unmanned telecommunications facilty; including the installation of equipment cabinets on existing rooftop. steel beams an six panel antennas.
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Feb 2007
Installation of 6 pv trackers in the north end parking lot. the tracker hold 576-215 watt pv modules. electricially connected in the shop/maintenance building at 2270 folsom street.
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Dec 2007
Voluntary structural strengthening and accessibility upgrade. new roof, new windows, new elevator, stairs and restrooms.
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Aug 2009
Temporary office & conference room for relocated employees while construction is occuring (3rd. floor only). life safety under separate permit.
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Oct 2009
Installlation of (6) new antennas, 2 will be mounted to parapet on southeast side of building & 4 inside new faux vent structures @ southwest, southeast & northeast corner of roof, 4 new equipment cabinets mounted on metal for new platform.
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Dec 2009
Cosco has been hired to install a voluntary fire alarm system on floors 1-3 & roof.
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Feb 2010
Floor 1, 2 & 3rd. add, relocate & remove fire sprinkler heads per tenant improvemnets.1st. add 3 & relocate 10. 2nd fl. add 12, relocate 58 & remove 3. 3rd fl. add 18, relocate 11. change out all existing sprinkler heads to quick response (tyco 3231).
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May 2010
Modification to existing unmanned telecommunication facility consisting of adding a new3106 cabinet to an existingequipment area, (3)newdtma's & (6)new runs of coax. also remove & replace (3)existingantennas with (3)new antennas with (3)newret's.
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Feb 2011
(60 kw) generator replacement - install new generator at the existing parking area at street level. reference permit application 200712201030.
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Jul 2011
As built plans: revision to: permit application 2009-12-09-2897 add additional devices on the 1st to 3rd floors. devices to be added: 1 heat detector, 1 relay, 5 dual module, 4 monitor module, 2 duct detectors and 3 door holders; as built plans.
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Sep 2011
Ground water system in basement & associated piping. the purpose of this system is to conserve portable water and use non-portable water for toilets & urinals. detailed system description is found on drawing po.1.
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Jul 2013
Modification of existing basement in order to accomodate change of use from abandoned to low-hazard storage (s-2) scope includes addition a new conc. slab over existing basement slap and providing new enclosed egress stair from the basement to first floor.
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Apr 2015
Furnish & install new vent exhaust fan, ductwork & controls. provide make-up air thru transfer grilles with fire dampers. remove ext window & install stationary exhaust louver. n/a maher ordinance.
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Jun 2016
Modification of an exisitng t-mobile wireless telecom facility consisting of: installation of (3) new antennas for a total of (6) and (3) new rrus.
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Aug 2016
Att - modification -, r&r 4existing antennas with 4 new, r&r 3existing antenna & mounts with 3new antennas and mounts, install 2new radomes, r&r 3existing rrus, install 3new rrus, relocate 2existing rrusinstall other minor equip. maher na.
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Aug 2016
Install 6 evip stations in parking lot. install 1 evip station in parking garage for handicap access. n/a for maher.
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Jul 2017
2nd fl - office ti construct new partitions, ceiling, flooring and associated mep work. n/a maher.
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Jan 2019
At&t - swap 3 antennas, remove 6 tma's, install 8 radios, add equipment to shelter.
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Feb 2019
Tmobile modification 2 new sq ft antennas on 3 e tripods, 6 antenennas total. remove 3 18" radome and replace with 3 new 22" radoma. sector c tripod to be relocated and intall new sleepers. install cable new ray as needed and sinstall 3 hybrid cables.
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Jun 2021
Cell site: mod to existing at&t - r/r 3 antennas, remove 6 rrus & replace with 3 new rrus.install 1 batt back-up with new batt; r/r 1 power truck; install 3new dc breakers and other small ancellary equip.no change in overall height of building.
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Jun 2021
Includes installation of card readers at 1st fl. elevator & 1st fl. stairwell door.
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Jul 2023
Existing at&t wireless facility modification: remove: 6 at&t ant. install: 3 new at&t ant in existing footprint. install: 3 new nema dc6, 3 pwr trunks, 1 dc12, 1 batt string, 2 rectifiers, 1 6648 in existing equip. area. new ant tops not to exceed building walls - no change to rad centers & overall height of building.
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Jun 2024
Tmobile: remove (6) existing antennas and install (6) new antennas; remove (2) existing cabinets and install (2) new cabinets; remove all existing batteries and install (12) new batteries.
DBI holds 46 permits for this parcel, most of them tenant improvements on individual floors. The timeline shows the 24 largest by stated cost, plus the earliest on file; the DBI query in the sources below returns all 46. 7 of them are nominal $1 street-space or sidewalk permits.
Not yet documented: the architect and builder, the early tenants and the date of the last recorded sale. The assessor dates the building to 1900; Planning's historic resource survey records 1930. The assessor dates the building to 1900; the city's 2011 survey of Showplace Square and the northeast Mission dates it to 1930. Submit an update