Depending on the square footage of the land you have, the cost to build a modern mansion can range from $125 to $175 per square foot. If you have a small piece of land, you’ll probably need around $120 per square foot to build a low-level mansion. For a mid-level mansion, you’ll need at least $180 per square foot.
Signature Series

The Signature Series by Stillwater Dwellings blends a mid-century aesthetic with a modern systems-built home. The one or two-story designs feature a butterfly-inspired roofline, glass wall of windows, and sustainable materials to improve indoor/outdoor living and lower operating costs. Each home plan is customizable with three Finish Packages to suit the individual needs of the homeowners.
Connection Series

A modern mansion in the midst of lush greenery is a must-see. But how much does it cost to build a modern mansion? You can start by looking at some of the more expensive modern homes for sale. There are two main types: the Connection Series and the Signature Series. These two types of modern mansions will cost you anywhere from $475 to $650 per square foot. Both of these types of modern mansions are considerably more expensive than traditional homes.
Pacific lodge

When you are planning to build a modern mansion, you should know that the cost depends on many different factors. First of all, it is important to know that the square footage and size of the land will determine the price. If the land is not level, you will have to spend money on leveling it. Additionally, you will need to spend money on the foundation, which can cost tens of thousands of dollars.

The design and layout of a modern mansion should be harmonious and showcase the property’s landscape. For instance, one modern mansion in Brazil has a central building surrounded by three auxiliary buildings that create a sprawling outdoor area. In addition to this, the architect wanted the interior spaces to reflect the desert mountain area, so they used earthy materials throughout the interiors. This gives the home a more authentic look.
Bigwood

A modern mansion is not cheap. The construction process starts with the site preparation and permit fees. These fees range from $400 to $4,000. Permit fees include impact fees, which can range from $2,300 to $3,900. Other costs include a sewer inspection and architecture and engineer fees.
Mirador

Building a new mansion is a huge undertaking that requires meticulous planning and the right investments. It can cost several million dollars or even more. The cost of a new mansion will depend on the square footage of the plot of land and the size of the house. A minimum-level mansion will cost about $125 per square foot. A mid-level mansion will cost about $245 per square foot.

A modern mansion should demonstrate the harmony between architecture and landscape. It usually consists of a central structure, three auxiliary buildings, and expansive outdoor spaces. The central structure acts as an anchor for the entire property and creates a sense of cohesion between different areas. In the case of the Santana de Parnaiba mansion, three auxiliary buildings are built around the main structure.