Granada Hills CA started out as a bucolic rural community of dairy farms, apricot orchards, and orange groves. Oil was discovered there and the San Fernando Valley’s first oil well was drilled in 1916. As Granada Hills CA became more developed, many homes were built in the mid-century modern style. Today these historic homes are highly sought after, especially the ones built by Joseph Eichler and located in the Balboa Highlands tract of Granada Hills CA. If you own a home in Granada Hills CA, Progressive Insulation & Windows can provide the upgrades you need to keep your property energy efficient, comfortable, and attractive. We carry a variety of windows, doors, and insulation products, and our customer service can’t be beat. We will be happy to help you create a cost-effective plan for making the improvements you want. All of our installers are Progressive employees (not subcontractors) and we guarantee the quality of their work 100 percent.