Jun 17, 2009 – Say you have an inground fiberglass pool around 30 ft. long without any concrete patio. For a professional to fully install this, it would normally cost anywhere from $28k–$33k in our area. A DIY installation of the same fiberglass pool would probably equate to a savings of $6k–$10k. Nov 10, 2011 – Thinking about installing a DIY fiberglass pool kit yourself? If so, then find out . How Much Will Your DIY Project Really Cost? Over the years . Although its initial cost is normally $5,000-$10,000 less than a fiberglass or concrete pool, its long-term cost is often much more. With the average liner replacement costing around $4,000, one can easily make up the price difference within 10-15 years after the pool’s installation. We want you to focus on enjoying your new inground pool kit and not tedious, costly upkeep. Whether you decide to purchase a Polymer or Fiberglass pool kit . This simple additional precaution can save many, many hours of painstaking repair work and additional costs later. Many municipalities require a plumbing . May 4, 2017 – 6 Steps to the Perfect DIY Inground Pool However, a high-end, tricked-out fiberglass pool could cost more than a barebones concrete pool. Jan 30, 2014 – SPP vinyl liner pool kits are one option for the DIY pool builder, another option is to use a fiberglass pool shell. This type of pool installation . Nov 17, 2017 – Average cost to build an in-ground fiberglass swimming pool is about $31400(12’x24′ installed with extra labor). Find here detailed information . Prices range from $23,967 (12′ x 24′ in-ground fiberglass pool – DIY) to $33,657 (12′ x 24′ in-ground fiberglass pool – upgraded) and also vary depending on .