Read on for a tour of the 21 most expensive homes , from malibu to mumbai. It also delves into 2025 architecture trends, including what types are appreciating in value. · mediterranean-style homes are among the largest and most expensive homes in the u. s. , likely due in part to their concentration in pricey markets like los angeles and miami. Also happens to be the most expensive. · so to get a deeper understanding of which house styles are deemed most valuable and sought after, i spoke with real estate experts all over the country who shared their thoughts on the most highly prized property. · notriangle studio found that the transitional style is the most expensive design, with eight states—arizona, colorado, georgia, nevada, new mexico, oregon, tennessee, and washington—valuing the. · want to know the most expensive houses in the world today? · a new report from realtor. com found that one of the least common home styles in the u. s.