Government sources state that construction began in 1884 and continued until Sarah Winchester's death in 1922 1, 3, 4. The site's own operators date the start to 1886 and describe 36 years of building 2, 5. Smithsonian Magazine's account has her employing shifts of 16 carpenters, paid three times the going rate, working around the clock from 1886 until her death 8. SFGATE reports that the work stopped repeatedly, citing Winchester's own letters about dismissing workmen and suspending construction 9, 6.
Her niece Marion Daisy Merriman moved in with her in 1888 and lived there for 15 years 6. Samuel Franklin Leib served as Winchester's legal consultant, advising her on property sales, investments and taxes, and History San Jose holds his papers 10. John Hansen was ranch foreman on the estate from the late 1890s until Winchester's death in 1922, and his daybooks, which record the work and Mrs. Winchester's movements, are also held by History San Jose 10.
The house carried features ahead of their time, including early gas lights, indoor plumbing, showers, an annunciator communication system and possibly wool insulation, and Winchester herself invented a greenhouse drainage system and laundry tubs with attached soap trays and washboards 6. An Otis elevator was installed in 1916 to give her access to the second and third floors after she began using a wheelchair late in life 5, 2. Easy risers were installed in frequently used areas to make stairs easier as her rheumatoid arthritis worsened, and a needlepoint shower let her bathe without climbing into a tub 5.
Sarah Winchester died in September 1922 at the age of 85, on September 5 according to the National Register nomination 1, 3. At her death the house had 160 rooms, 2,000 doors, 10,000 windows, 47 stairways, 47 fireplaces, 13 bathrooms and six kitchens 6, 2.