See How We Earned Diamond Certified!

The Diamond Certification Award guarantees professional, high-quality service for customers in all major service industries—including residential construction and exterior decoration. Its rigorous 12-Step Certification Process ensures that every Diamond Certified company consistently performs above and beyond the standard, producing top-tier results in every project they undertake.

Rated Highest in Quality and Helpful Expertise for 23 Consecutive Years.

Read our Latest Report: DIAMOND CERTIFIED REPORT | 2025

Hear from our Experts

Upgrading Double Pane Windows

Best Window Glass for Sound Suppression

Consideration for Choosing a Window Contractor

Understanding Your Window Options

Fiberglass Door Benefits

The Benefits of Fiberglass Windows

Custom Exteriors earned its Diamond Certification by:

Passing all Credential Verifications
(including license, liability insurance, workers’ compensation, and financial check for contractors)

Receiving Exemplary Scores on all Random Sample Surveys
conducted by the Diamond Certification team (Surveyed 617 previous customers)

Scoring 95% for Highest in Quality and Helpful Expertise
on the True Customer Satisfaction Surveys (on a scale of 100)

Guaranteed one of the best local service companies for Exterior Design & Decoration, CUSTOM EXTERIORS bears its Diamond Certified Performance Guaranteed Seal with pride. True to this guarantee, we promise Quality • Satisfaction • Trust on all projects conducted by our company.

Five-Star Reviews

Read Our Testimonials

"Loved working with Custom Exteriors. Very responsive to inquiries. Precise in their measurements, estimate and timeframe for completion. Highly recommend them."

Brian I.

Tampa, FL

"Custom Exteriors provided a great product and good service in replacing 2 sliding glass doors and 2 other windows in my townhouse. One was a custom window that required extra work in refitting the plantation shutters to the new window. Although there were some bumps along the way, Jeff and his foreman Ryan excelled at follow up. I would recommend Custom Exteriors."

Carole N.

Tampa, FL

"Custom Exteriors did a wonderful job. The installation crew were neat and thorough. My salesman Mark kept me informed about delivery and the windows are beautiful, quiet and warm house. I’m very pleased."

Susan G.

Tampa, FL

"Kevin one of the owners of Custom Exteriors contacted me the following day and immediately tried to make things right. The first thing, I was impressed about was he took my call without hesitation. Many medium sized business will bounce me around to different people before finally being able to talk to the owner. He was an attentive listener and took to the time understand my needs and wants in an exterior entry door.His communication was top notch, sending me estimates the same day or the following day. He gave me choices in fiberglass doors: ProVia and Therma-Tru, hardware: Trilennium vs Emtek, and single point vs multiple point locks. I just ordered a ProVia doors through Kevin. This surprised both to my husband and me. Before contacting Custom Exteriors, we thought we were going to get a Therma-Tru door, but that totally changed once we the information we needed from Kevin. I get the sense that he truly wants to give customers options and information, but respects the customer's final decision. There is not high pressure sale pitch. Kevin wants customers to be informed and happy with the end product."

Hellen K.

Tampa, FL

Read Our Reviews