Building links for construction company SEO is an important part of any marketing strategy. What worked five years ago, isn't necessarily going to help you when it comes to link building in 2016. With all of the competition online today, you need to build links that increase your ranking to get on the first page of search results. Not all links are created equal. Weak links from unrelated and low ranking websites can hurt your search engine optimization efforts. You have to build quality links to and from important, high ranking websites that are related to the products or services that you have to sell.