The Domestic Interiors Database comprises a broad-ranging analytical survey of the ways in which the interior has been represented since the Renaissance in Western Europe and North America. With over 3,300 entries, the database brings together a carefully selected group of representations of the interior across six centuries that are more extensive, numerous and accessible than anything previously available.

Jeremy Aynsley's contribution to the Domestic Interiors Database was to manage the research project in its entirety. This involved steering researchers in their content and research methodologies and presenting the project on a regular basis to the Centre for the Study of the Domestic Interiors's Academic Advisory Committee. In the final year, he chaired themed workshops on particular areas of the history of the domestic interior. He also managed the editorial stages of the project, including reviewing over 1,000 entries in preparation for their going online.

Aynsley's own 130 individual entries arose from his research into late nineteenth- and twentieth-century European and American design and the domestic interior. They were intended to draw attention to lesser-known sources for interpreting the domestic interior and were chosen to complement the entries made by other members of the research team. Equal attention was given to visual and textual sources. His entries include US trade literature of the 1930s in which new materials for the building industry were promoted. Literary sources in the form of extracts from novels, poetry and stage instructions written by major playwrights are included to show their importance for establishing the imagined interior and various means employed by writers to convey subject-object relations within fictional domestic space. Another group of entries indicates the changing views of the gendered nature of the interior and its philosophical implications in the writings of Walter Benjamin, Pierre Bourdieu, Gaston Bachelard, Georges Perec and Laura Mulvey.