There are many factors that make a home design good or bad, other than purely personal taste.
Energy efficiency is a good measure, as there are saving on “running costs” as well as making the home more liveable. When choosing a home design, the design should not be viewed in isolation but set on your site or a proposed site, if you are looking at home & land. The solar orientation, prevailing breezes, room locations etc, are major factors that make or break the Energy Efficiency of a home design.
For example, should the rear patio & beautiful glass doors open into the afternoon sun, this is as bad as it gets, so the design or site should be replaced with something more suitable. Not only is the rear patio unusable in the afternoon, the costs to run air conditioning to continually cool the living areas becomes unreasonably high, plus you will eventually need extra expense to shade these areas in some way.
The NHS team offer a free design service that can help you design a custom home to suit your needs and is Energy Efficient.