1818 California Street

1. 1876

   Built in 1876 by Louis Sloss Sr., founder of the Alaska Commercial Company, as a wedding present for his daughter Estelle and her husband Ernest Lilienthal, who lived here until they sold it in 1907.

   SF Planning, landmark designation
2. 1973

   Listed as San Francisco City Landmark No. 55 — the Lilienthal-Orville Pratt House.

   SF Planning, Article 10 landmarks SF Planning, Article 10 landmarks Victorian Era Styles Historic Context Statement, adopted 2022
3. January 18, 1973

   The City Planning Commission unanimously approved designating the house at 1820 California Street a city landmark, on the recommendation of the Landmarks Preservation Advisory Board.

   San Francisco City Planning Commission minutes, San Francisco Public Library (Internet Archive)
4. February 5, 1976

   The Lilienthal-Orville Pratt House stood vacant: 20 rooms and about 7,000 square feet, divided into three dwelling units, with no off-street parking.

   San Francisco City Planning Commission minutes, San Francisco Public Library (Internet Archive)
5. February 5, 1976

   Opposed by the Landmarks Preservation Advisory Board and the neighbourhood associations, the City Planning Commission unanimously refused to rezone the Lilienthal-Orville Pratt House from R-3 to R-4 and to let its lower floor become a plastic surgeon's office (Resolutions 7442 and 7443).

   San Francisco City Planning Commission minutes, San Francisco Public Library (Internet Archive)
6. Sep 1986

   Permit 8611594 $$$ $40,000

   Horizontal extension, construct new detached garage.

7. Jul 1988

   Permit 8809639 $$$ $24,458

   Remove existing tar & gravel roofing down to orig. tin.

8. Jan 1995

   Permit 9501130 $$$ $5,000

   Strenghten #3 living rm floor only &define location of 3 apts.

9. Jul 1998

   Permit 9814314 $$$ $10,000

   1st floor, convert existingrestroom to a shower &restrm to pantry.

10. Aug 1998

    Permit 9815585 $$$ $1,000

    Repair existing fence to match materials & design 10 ft.

11. Aug 1998

    Permit 9816448 $$$ $500

    Re-install door at rear of building.

12. Sep 1998

    Permit 9818893 $$$ $1,800

    Install 7' 6" x3 7'6" ft deep, prefabricated hot tub in grd.

13. May 2011

    Permit 201105125966 $$$ $5,050

    Voluntary earthquake safety anchor bolt upgrade to existing sill plates. add 3/4" dia.x18" long min. epoxy bolts in 1" dia.x15" min. deep non-vibrating drilled holes @ 32" o.c. with 3"x3"x 1/4" hdg. plate washers typ. with 2 bolts per wood sill plate min. & 9" end distance.

14. Jun 2011

    Permit 201106148033 $$$ $35,450

    Voluntary earthquake safety anchor bolting upgrade p/a 201105125966 to be revsed with additonal voluntary renforced concrete foundation elements desired by owners of property to help resist earthquakes. all work inside basement.

15. Aug 2011

    Permit 201108222973 $$$ $1

    Final revisions for permit application 201106148033 to show completed job with correction notice requiring special inspections for drilled piers that perform no function here being 20'-0" deep and existing basement 6x6 posts where eaten by termites 65+ years ago, so removed and existing 6x8 beam strengthened here.

16. Apr 2012

    Permit 201204248982 $$$ $9,000

    Remove dry rot at front steps and replace with new pt or redwood wood as original less than 50% of steps, all work in kind.

17. Jul 2013

    Permit 201307262902 $$$ $4,500

    Remove and repair dry rot on side of stairs, less than 50% not street visible.

18. Sep 2014

    Permit 201409035353 $$$ $1,000

    Repair one (1) existing wood window. top floor bay, center window sash.

19. Aug 2015

    Permit 201508134230 $$$ $2,000

    Remove opening into non-load bearing wall only.

20. Jul 2016

    Permit 201607202923 $$$ $5,000

    Repair dry rot on front deck railing, less than 50%. repair to match existing in material, profile and dimension.

3 nominal $1 street-space or sidewalk permits are omitted from the timeline. 8 expired or cancelled permits are not shown.