Licenses & Certifications
Licensed. Trained. Verifiable.
John Delia Jr. is a Michigan licensed residential builder and a licensed Michigan real estate salesperson, with factory installer training for windows and doors and lead abatement supervisor training. Every license below can be checked with the State of Michigan.
#242600708Michigan Residential Builder License
17+ yearsSecond-generation builder
Metro DetroitDetroit to Royal Oak & West Bloomfield
Michigan State Licenses
Issued by the Michigan Department of Licensing and Regulatory Affairs (LARA). Both licenses are issued under “John D. Delia.” Search by license number to verify. Michigan has more than one licensed John Delia.
Active
Michigan Residential Builder License
Michigan Department of Licensing and Regulatory Affairs (LARA)
- License #
- 242600708
- Issued
- April 30, 2026
- Expires
- May 31, 2029
- Name on license
- John D. Delia
Michigan requires a residential builder license to contract for new homes, additions and remodeling. It means John has passed the state’s licensing requirements and works under Michigan’s builder rules, so you’re hiring an accountable, licensed builder. To verify, enter license number 242600708 on LARA’s Construction Codes license search.
Verify on LARA
Active
Michigan Real Estate Salesperson License
Michigan Department of Licensing and Regulatory Affairs (LARA)
- License #
- 6501472716
- Issued
- October 2, 2026
- Expires
- October 2, 2029
- Name on license
- John D. Delia
- Employing broker
- Reboot Realty LLC (#6505432612)
Being both a licensed builder and a licensed real estate agent lets John help sellers do both jobs: decide which repairs and updates are worth it before listing, then market and sell the home. To verify, search LARA by license number. The license is issued under “John D. Delia.”
Verify on LARA
Window & Door Installer Certifications
OSI® Certified Installer training for the QUAD® Window & Door System, OSI’s sealant system for sealing windows and doors against water and air. Leaks around windows and doors are one of the most common causes of water damage and drafts in a home. All four certificates are valid until October 25, 2030.
Certified
OSI QUAD Certified Installer: Replacement Windows
OSI® (Henkel) · QUAD® Window & Door System
- Certification #
- 260487562
- Valid until
- October 25, 2030
Trained on sealing replacement windows in existing homes, where old openings, siding and trim make a watertight seal harder to get.
Certified
OSI QUAD Certified Installer: New Home Windows
OSI® (Henkel) · QUAD® Window & Door System
- Certification #
- 260501702
- Valid until
- October 25, 2030
Trained on sealing windows in new construction and additions, so window openings are properly sealed before siding goes on.
Certified
OSI QUAD Certified Installer: New Home Doors
OSI® (Henkel) · QUAD® Window & Door System
- Certification #
- 260506474
- Valid until
- October 25, 2030
Trained on sealing exterior doors in new construction and additions, including the thresholds and frames where water and air most often get in.
Certified
OSI QUAD Certified Installer: Replacement Doors
OSI® (Henkel) · QUAD® Window & Door System
- Certification #
- 260523488
- Valid until
- October 25, 2030
Trained on sealing replacement exterior doors in existing homes, where worn sills, rotted framing and old trim often let water and drafts in.
Lead Safety
Many Metro Detroit homes were built before 1978, when lead-based paint was still common. Lead work requires specific training and state certification.
Training complete · State certification pending
Lead Abatement Supervisor: Initial Training
ETC Training Services Group · Romulus, Michigan
- Certificate #
- 293385-44972
- Course
- 32 hours · Oct 5–8, 2026
- Standard
- 40 CFR 745.225; HUD guidelines for lead supervisors
- Refresher due
- March 31, 2029
Completed the 32-hour supervisor course required by the EPA and HUD. The next step is the third-party state exam. This page will be updated once the State of Michigan issues the certification.
In Progress
- Lead Abatement Supervisor: Michigan state certification exam
- EPA Lead-Safe Renovation, Repair & Painting (RRP) certification. Learn more in the EPA’s Renovate Right brochure (PDF).
- OSHA 30-Hour Construction, targeting March 2027
- Nudura ICF (Insulated Concrete Form) Basic Installation Training: completion certificate in progress. John already has hands-on Nudura installation experience.
Common Questions
Is John Delia Jr. Construction licensed in Michigan?
Yes. John Delia Jr. holds Michigan Residential Builder License #242600708, issued by the Michigan Department of Licensing and Regulatory Affairs (LARA) and valid through May 31, 2029. You can verify it by license number on LARA’s Construction Codes license search.
Is John Delia Jr. also a real estate agent?
Yes. John holds Michigan Real Estate Salesperson License #6501472716 with Reboot Realty LLC. He is also a licensed residential builder, so he can help sellers plan pre-listing repairs and updates and then list the home.
Is John Delia Jr. a certified window and door installer?
Yes. John is an OSI® Certified Installer for the QUAD® Window & Door System, with certifications for replacement windows, replacement doors, new-home windows and new-home doors, all valid through October 25, 2030.
Can John Delia Jr. handle lead paint in older homes?
John completed the 32-hour Lead Abatement Supervisor initial training in October 2026 and is completing the Michigan state certification exam. He is also pursuing EPA RRP certification for lead-safe renovation work. Any lead-related work will only be done under the proper current certification.
What areas does John Delia Jr. Construction serve?
John Delia Jr. Construction is based on Detroit’s east side and serves Metro Detroit, including Detroit, Royal Oak, West Bloomfield, Bloomfield Hills, Bloomfield Township, Farmington Hills, Orchard Lake, Keego Harbor, Sylvan Lake, Commerce Township, Allen Park, Wyandotte, River Rouge, Ecorse and Madison Heights.
Work with a licensed builder
Renovations, repairs, painting, drywall, windows and doors across Metro Detroit.
Call 313-450-9311
John Delia Jr. Construction LLC · Michigan Licensed Residential Builder #242600708 · Real estate services provided through Reboot Realty LLC.
