Cosmo Builders has successfully completed residential additions, structural renovations, commercial construction, and government-funded projects. Our experience includes architectural design, engineering coordination, permitting, construction management, inspections, and final project delivery. Every home addition is managed by a Class A Licensed Contractor to help ensure quality workmanship, code compliance, and professional oversight from start to finish<\/span><\/p>\n Sometimes the house you love just stops being big enough. A new baby on the way. Aging parents moving in. A job that’s now full-time from home. The family you’ve grown into the house you already have, and moving feels like the wrong answer when everything else about where you live is right.<\/p>\n That\u2019s where a home addition comes in. Cosmo Builders is a home addition contractor serving homeowners across Northern Virginia and Washington, DC. We design and build room additions, second-story additions, garage additions, sunrooms, in-law suites, and full structural expansions, adding the space your family needs without making you give up the neighborhood you\u2019ve put down roots in.<\/p>\n","protected":false},"featured_media":580,"template":"","servivrescat":[25],"class_list":["post-579","mainservices","type-mainservices","status-publish","has-post-thumbnail","hentry","servivrescat-residential","entry"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/mainservices\/579","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/mainservices"}],"about":[{"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/types\/mainservices"}],"version-history":[{"count":7,"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/mainservices\/579\/revisions"}],"predecessor-version":[{"id":7443,"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/mainservices\/579\/revisions\/7443"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/media\/580"}],"wp:attachment":[{"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/media?parent=579"}],"wp:term":[{"taxonomy":"servivrescat","embeddable":true,"href":"https:\/\/cosmobuilders.com\/wp-json\/wp\/v2\/servivrescat?post=579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Home Addition Contractor in Northern Virginia, Room Additions, Second-Story Additions, and Home Expansion Services<\/h2>\n