7 Glorious Golden State Prefabs - Photo 1 of 7 - When Abbie and Bill Burton hired Marmol Radziner to design their prefab weekend home, their two requests were &quot;simple-simple, replaceable materials,&quot; says Abbie—such as concrete floors (poured offsite in Marmol Radziner&#x27;s factory) and metal panel siding—and &quot;the ability to be indoors or outdoors with ease.&quot; Deep overhangs provide shade and protection from rain, so the Burtons can leave their doors open year-round and hang out on their 70-foot-long deck even in inclement weather.