Boston was ranked by The Economist as a top-10 city globally for its demonstrated ability to attract capital, businesses, talent and visitors. Sounds like a great place to live? Yes, but only if you can afford it. Over a third of the Boston population spends over 30%% of their annual income on housing. More and more people are being forced out of the city. Established in 2012 by a group of young architects who were challenged to balance a base-line income against the rising housing cost, WHAT'S IN set a goal to find urban housing solutions that are more accessible to the greater workforce. Over the course of 5 years, the research group gathered data on housing preferences, designed affordable housing prototypes, cultivated collaborations with other groups with similar interests, and created an idea-sharing platform through an annual exhibit. In this book, we will take you on a journey of our discoveries from 2012 - 2016, where we strived to create an affordable downtown Boston living for everyone.