Premiere full service bi-fold door company
Call Us: 949-295-4495 Remodeling and Home Design

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Our Guarantee.


Don’t pay more to get the best.


Cornerstone Openings is passionate about one thing – offering you the ultimate doors to seamlessly blend your outdoor environment with your lifestyle.

We are so confident about our cost and craftsmanship, we offer you the only 10% GUARANTEE in the industry on our cost.

From start to finish, Cornerstone Openings offers the finest products and services available.

The Complete Project
A typical project consists of:

+ In-home consultation to help select the right door or window style and dimensions that suit your home.

+ Engineering calculation of the beam/ header that is required for the door.

+ Custom door or window ordering directly from the manufacturer.

+ Create rough opening including demolition and installation of the beam / header.

+ Concrete cut reducing threshold height & trip factor, giving a smooth transition & appearance.

+ Installation of the doors with proper water proofing.

+ Relocation of electrical outlets, light switches, & outdoor lighting fixtures.

+ Finishing, dry wall & stucco repair and casing.

+ Servicing & door adjustments.

+ Interior or exterior trim.

+ Complete clean up.

We’ll take a competitors' total project cost and provide our unparalleled industry service, complete project management, and our satisfaction guarantee, for 10% more than the total you were proposed. Deal with only one name, Cornerstone Openings, and get the very best.
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