K&R Construction Co. has been enjoying significant customer loyalty and retention in its 19 years as an excavating contractor. We specialize in commercial and residential site development and roadwork, in the public and private sectors. Quality Building & Site Management As there is a substantial need in the industry for quality building and site development, K&R Construction Co. engages in providing high-quality site, roadway, and utility services to our clients in Massachusetts and New Hampshire. We are eager to exceed all expectations in these fields.