@Jerry Padilla For "tiny", downtown Tokyo, Japan condos have some great ideas. Their furniture and appliances are designed to be tiny compared to western sizes. Condo restrooms are just a bit bigger than RV restrooms.
In Seattle, there are some houses such 834 NW 53rd St, Unit A, Seattle on Redfin or Zillow. These houses are "smaller" because don't take up a lot of real estate footprint. There is no common roof with the neighbors, so no worries about special assessment surprises for repairs. According to our company civil engineers and architects, new constructions can have LEED features built in to achieve energy reduction and recycled material. Asphalt shingles leach material during rain storms, and can leach material not great for ground water. Storm water drain system gets impacted because sometimes the asphalt shingle aggregate gets washed into the system. Our green LEED architects reminds me constantly how we should go with metal roof or concrete material when we build. Concrete and metal are easily recycled. Asphalt shingles, not so much. The architects also want rain gardens and reclaim rain water to flush toilets. LOL