In July of 1886, however she bought the J. D. Walker estate for the then-extravagant sum of $20,000 and made plans to remove the house Walker had built. Later that summer, she sold all the Walker furniture at auction. A lull followed this flurry of activity; it was not until February of 1888 that she hired E. F. Chisolm, a San Rafael contracter, to build her a house to be completed by August of that year.

Falkirk, the house you see today, went up at lightning speed, despite its wealth of carefully crafted interiors and intricate facade. On August 23, 1888, the Marin Journal declared, "Mrs. Park's new residence, on the old Walker lot, is completed so far as the contractor, Mr. Chisolm, is concerned, and will be occupied next month. It is one of the most ornamental and best built mansions in this place of beautiful homes. The architecture is conglomerate, Queen and Eastlake, As You Like It, the effect being harmonious and pleasing.

Clinton Day was the architect, as all who know his work would recognize. The ceilings below are all finished in natural woods, and the walls of the hall, reception and dining rooms are paneled in Sierra pine, burled ash and redwood and the library in matting and bamboo. The plan is unique, original, itself alone, and one is impressed with its comfort, roominess, elegance, and perfection."