1900, Yorkshire Archaeological Society, Yorkshire archaeological journal: Volume 15:The two eastern arches have been underbuilt for the sake of strengthening them.
(transitive) To perform insufficient construction on a building or in an area; build below a specified requirement or standard.
1903, West Publishing Company, The Northeastern reporter: Volume 65:Appellee was obliged to overbuild, rather than underbuild, the appellant's telephone line for the distance of these six spans for the following reason ...