Cat 01
Licensing & Compliance
1 of 1 source checks verifiedSignal
SAM.gov federal exclusions
Result
No exclusions found
SAM.gov
Verified
Brian Allendorfer Co. - Roofing Contractor in Chicago, IL
Brian L. Allendorfer Jr., Owner · Established 1985
41+
Years in Business
24
Reviews
Accreditation Status
Cycle 2026
Status
Not Accredited
Review not yet completed
Brian Allendorfer Co. has not yet been reviewed for ARCO Accreditation.
ARCO Accreditation is reserved for roofing businesses that complete a comprehensive review and meet ARCO's required qualification threshold. Not every business reviewed qualifies.
Issued only after successful review
Accreditation No.
Not Issued
Accreditation Status
Not Accredited
Accreditation Review
Not Completed
Qualification Status
Not Determined
About ARCO Accreditation
Accreditation cannot be obtained through application alone. Each business must first undergo ARCO's complete review process and demonstrate that it meets the standards required for accreditation.
Inquire About an Accreditation Review
Provide your contact information below. ARCO will review your inquiry and determine whether your business may be invited to complete the accreditation review process.
Public Record
What we can independently confirm today
Findings drawn from public records, manufacturer registries, and third-party review platforms — synthesized using ARCO Standard 2026.1.
Public Signals Reviewed
13
across 4 categories
Customer Review Rating
4.5/5.0
across 24 verified reviews
Years in Business
41+yrs
Founded 1985
Accreditation Review
Not Yet Completed
Qualification has not been determined
Accreditation Committee Review
No committee determination has been issued.
Not Yet ConductedThe source findings below have been independently verified for this company profile. A formal ARCO Accreditation Committee review has not yet been completed, and qualification for accreditation has not been determined.
Only businesses that complete the full review and meet ARCO's required threshold may receive accreditation.
Cat 02
Operational History & Stability
4 of 4 source checks verifiedSignal
Years in operation
Result
41+ years continuous
Founded: 1985
Verified record
Verified
Signal
Owner/principal
Result
Mr. Brian L. Allendorfer Jr.
Manual collection
Verified
Signal
Website registration
Result
Registered: Jun 2, 1999
WHOIS/RDAP
Verified
Signal
Google Business Profile
Result
Brian Allendorfer Company, Inc.
1240 N Central Park Ave, Chicago, IL 60651
Verified
Cat 04
Customer Outcome Data
3 of 4 source checks verifiedSignal
Aggregated marketplace rating
Result
4.5 / 5.0 across 24 reviews
Google 4.5 (24)
Multi-source
Verified
Signal
Review volume
Result
24 stored public reviews
Multi-source
Source available
Signal
Customer review excerpts
Result
8 qualifying reviews on file
Multi-source reviews
Verified
Signal
BBB rating
Result
A+
BBB profile
Verified
Cat 05
Complaint & Public Findings
1 of 2 source checks verifiedSignal
OSHA findings
Result
2 violations across 1 inspections
Last inspection: 03/29/2024
OSHA
Source available
Signal
BBB complaint history
Result
No complaints filed in the last 36 months
Years in business: 41
BBB profile
Verified
Public records and third-party platform data may change over time. ARCO does not guarantee ongoing third-party accuracy.
Report no.
IL-260811-11655
·
Evaluated Aug 11, 2026
·
Independently verifiable at
RoofingContractors.org/verify/IL-260811-11655
Eligibility · All Cleared
Automatic eligibility checks cleared
ARCO automatically withholds accreditation when any of the following findings are present. Brian Allendorfer Co.'s record was checked against each.
Active SAM.gov federal exclusion
None Found
No exclusions on record
OSHA willful violation or 3+ repeat violations on record
None Found
1 inspections · 2 violations on record
BBB rating of C, D, or F
None Found
Rated A+
Avg. customer rating < 4.0 (with ≥ 20 reviews)
None Found
4.5/5.0 · 24 verified reviews
About Brian Allendorfer Co.
Brian Allendorfer Co., Inc. is a Chicago-area contractor owned by Mr. Brian L. Allendorfer Jr. The company provides installation services for roofing, siding, masonry, gutters, windows, doors, and skylights.
Based in Chicago
Contact Brian Allendorfer Co. to confirm availability for your project in Illinois.
Nearby places
Chicago, IL
Oak Park, IL
Cicero, IL
Elmwood Park, IL
River Forest, IL
Forest Park, IL
Berwyn, IL
Contact Brian Allendorfer Co. to confirm service at your address.
Aggregated review summary
24
reviews analyzed
Google
24 reviews
ARCO Review Findings
Reviewers describe the company’s roofing, HVAC, and construction work as high-quality, professional, and reasonably priced, with skilled crews and strong attention to detail. They also frequently note clear communication, responsive staff, timely completion, and thorough cleanup.
5 recent reviews
A
A K.
Google · Jun 2026
They did a great job discarding my old roof and installing a brand new roof. Survived 80mph wind gusts
G
Greg U.
Google · Nov 2025
Brian Allendorfer is an outstanding company to do business with! Brian, the owner, is a straight shooter—super cool, honest, and easy to work with. His project manager, Ryan, kept every promise he made throughout the process. I experienced zero issues from start to finish. They replaced the roof on my two-story colonial, including a full tear-off and some wood replacement. The work was done on time, the price was very reasonable, and the quality was excellent. Their crew was efficient, professional, and left the property spotless. You can tell they take pride in doing the job right. If you need roofing work done, call Brian or Ryan—you won’t be disappointed!
N
Norm W.
Google · Oct 2024
I’ve been dealing with Brian Allendorfer Co. for about 30-years, having Brian and his team collaborate on a complete restoration of This Old House and a totally new amazing Garage Roof Deck. Quality, Integrity, and Service like no other. And, Brian’s got a pretty damn good sense of humor!
J
Jessica S.
Google · Sep 2021
I used Brian Allendorfer Company to replace two HVAC units in my business. I went with them after receiving quotes from two other companies. Brian Allendorfer Company's quote was the most reasonable and the staff, in my experience was the most professional. My contact was Scott who was knowledgeable, polite, and always available to answer questions and concerns. He made the experience comfortable from start to finish. I am very happy with the work that Brian Allendorfer Company provided and plan to use them again for future needs.
K
Kristin B.
Google · May 2021
We were very pleased with all the outdoor construction work that was done by the team at Brian Allendorfer Company! Everyone was very professional and the attention to detail was especially wonderful! We had a back cedar deck built along with a pergola and it looks great! We receive so may compliments! They also installed our new windows and siding! All looks great! We would absolutely recommend!
Review data aggregated from public sources · ARCO does not moderate third-party reviews
Why Hire an ARCO-Accredited Roofer
The difference between "good enough" and proven excellence. Only the top roofers in America earn ARCO Accreditation — recognition of true craftsmanship, ethics, and integrity.
Homeowner Benefits
-
Peace of Mind: Every ARCO-Accredited roofer has been checked against public licensing records, safety records, complaint history, and verified customer reviews.
-
Work You Can Trust: ARCO's evaluation includes manufacturer certification programs — credentials that can help preserve your roof's warranty coverage.
-
Verified, Not Self-Reported: ARCO's findings come from government and third-party sources — state filing offices, SAM.gov, OSHA, and the BBB — not from paperwork a contractor submits about itself.
-
A Public Paper Trail: Every accredited profile publishes its report number, evaluation date, and sources — so any homeowner can independently verify the findings at RoofingContractors.org.
What Accreditation Means
- License & Registration Verification
- State Filing & Standing Review
- Federal Exclusion Screening
- OSHA Safety Record Review
- Complaint History Screening
- Customer Review Evaluation
- Annual Re-certification
Contact Brian Allendorfer Co.
Ready to request an estimate?
Call (773) 292-0600 or request a written estimate through ballendorfer.com.