“The cost of building the house is expected to be about 30% of the property’s current value.
Source: [MarketWatch](https://www.marketwatch.com/story/i-have-two-sons-should-i-allow-one-son-to-build-a-400-000-house-on-my-property-im-not-permitted-to-subdivide-the-land-5ec23b62?mod=mw_rss_topstories)