Mallard House was built in 1910 by Mallard Celaeno and his wife Constance, upon their arrival in Gray Harbor. It is in a mishmash mostly Victorian style, with turrets, domes, gables, and multiple weathervanes jutting into the Bayside skyline. It is constructed of red and buff colored brick, with dark wood accents and stone bannisters. Many of the windows are boarded up, and ivy has taken over many of the walls. The grounds were once beautiful, but now are mostly untended and need cleanup.
Inside, many of the areas have the doors closed and locked, for safety concerns due to the dilapidated state of parts of the home. In them are dusty hallways with broken toys and piles of old papers, between drifts of leaves and debris that get in through holes in the roof.
The areas that are lived in are well worn but clean, with parquet wood floors that have lost their polished sheen, and faded wallpaper. A grand marble staircase sweeps up from the front entrance, and the pale walls have wood panels that are a dingy white. There are a few pieces of art still remaining, but many have been sold off. Family photos from many generations of Celaenos are still hung.
There are eight bedrooms and five baths, with a parlor, library, kitchen, dining room, living room, den, and sitting room. The house boasts 9 fireplaces.