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Bostok & Williams Roofing

Seamless Metal Gutters - Install, Seamless Metal Gutters - Repair, Gutters & Downspouts Cleaning Service,

About us

Bostok Williams Roofing & Gutters has been serving Bay Area homeowners since 1997. Owner-operator Randy Williams brings 50 years of roofing and gutter expertise, delivering high-quality craftsmanship on every project. We show up on time, work cleanly, and treat your home like our own. From repairs to full installations, we provide reliable, experienced service you can trust.

Business highlights

29 years of experience

Services we offer

General Contractors

Amenities

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
4.8121 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
45%
4
7%
3
0%
2
0%
1
0%

Filter reviews by service

Showing 1-25 of 121 reviews
Francesca B.
Dec 2025
5.0
Inspection - Roofing
Our apt ceiling developed a leak during some heavy rainfall and Randy came quickly to repair the leak. It was done efficiently and effectively and always so kind and professional! Would recommend Bostok & Williams Roofing to anyone looking for good quality repairs and a nice crew!

Michael M.
Nov 2022
5.0
Gutter Covers and Accessories Installation and Replacement
Yes, I recommend this pro
$2,000
Absolutely hire Randy. He is great. Accurate. On-Time. Committed to excellence. Very high quality. Exceptional follow-through.

Rob D.
Dec 2021
5.0
Yes, I recommend this pro
Great guy to work with, responsive and honest.

Brian K.
Oct 2020
5.0
Seamless Metal Gutters - Install
Yes, I recommend this pro
If there were any delays we were informed.

Keith M.
Mar 2020
5.0
Yes, I recommend this pro

Donald F.
Jan 2020
5.0
Yes, I recommend this pro
$925
Gret Customer Service and does the work hired to do. Also, was very generous in answering questions for potential future care and maintenance of my rook.

Scott S.
May 2019
5.0
Seamless Metal Gutters - Install
Yes, I recommend this pro
$450
Very professional. Completed complete assessment, offered specific recommendation, price quote, and timing. Did the work promptly and completely. Even fixed a minor issue in another area defined before job started that really helped me out. Very professional!

Nelia L.
Mar 2018
5.0
Galvanized Gutters Service
Yes, I recommend this pro
$1,650
give evrything to fix my gutter.

Diane R.
Sep 2017
5.0
Yes, I recommend this pro
$9,740
Scope of work: (1) House roof tear off & replacement with asphalt shingles, (2) replace, frame & install skylight, (3) replace rotted wood roof on shed. Overall a stress free experience. Professional, responsive to all questions & concerns, quality workmanship. Owner/operator with long time crew eliminates the concern of using a company that has a constant rotation of new hires with little to no skill, experience, or care about doing a good job. Would definitely recommend Randy & Lou . In fact, I've already recommended them to a friend.

Cecilia T.
Apr 2017
5.0
Yes, I recommend this pro
$550
Good communication

Pete D.
Feb 2017
4.5
Seamless Metal Gutters - Repair
Yes, I recommend this pro

Jeff J.
Jan 2017
4.5
Yes, I recommend this pro
Did not respond to a follow up email.

Ron S.
Jan 2017
4.5
Seamless Metal Gutters - Install
Yes, I recommend this pro
$880
Professional and respectful.

Susan P.
Sep 2016
5.0
Galvanized Gutters - Repair
Yes, I recommend this pro
$2,590
They did a great job replacing the gutter and fascia.

Fred S.
Sep 2016
5.0
Yes, I recommend this pro
$1,000
very good and the workers know their jobs

Sandra R.
Aug 2016
5.0
Seamless Metal Gutters - Install
Yes, I recommend this pro
They also did an excellent job straightening crooked downspouts. What I didn't mention was that a new gutter installed by contractor leaked. When Bostok & Williams discovered that, they knew exactly what needed to be done and repaired it quickly. Did a water test after and not one drop of water was found outside the gutter and downspout. Excellent work - excellent.

Frank K.
Aug 2016
5.0
Seamless Metal Gutters - Repair
Yes, I recommend this pro
$325
Arrived on time. Were courteous and professional.

Judith S.
Jul 2016
5.0
Yes, I recommend this pro
I received two quotes and theirs was higher by a few hundred dollars. I still picked them because they specialize in roofing and their work shows it. They replaced the highly damaged roof on our studio. Whoever installed it first did a terrible job and the bad job was apparent both cosmetically and functionally. Randy and his crew did an amazing job and installed the correct type of roof for the structure of the studio. When our main house needs roof work I'm calling Randy again. Highly recommended.

Kathryn H.
May 2016
4.5
Seamless Metal Gutters - Repair
Yes, I recommend this pro
Hired with ease

Gary S.
Mar 2016
5.0
Seamless Metal Gutters - Install
Yes, I recommend this pro
$1,400
saw and recommended roof work. witch I had them do.

Cheryl R.
Mar 2016
5.0
Yes, I recommend this pro
Apparently the roofing was installed incorrectly around my skylight years ago when it was replaced (before be residency started here). Now, I have to deal with fixing it. Luckily, I found B&W on Home Advisors. Troy & Randy were able to come out quickly to give an estimate AND fix it before the rain came. Affordable price and he didn't have to stay that long.

Jim C.
Jan 2016
5.0
Galvanized Gutters - Repair
Yes, I recommend this pro
$50
came within a day to re-connect a downspout to second story gutter. Excellent service and fair price.

Richard B.
Dec 2015
4.5
Galvanized Gutters Service
Yes, I recommend this pro
Very personable and easy to deal with.

Richard R.
Nov 2015
5.0
Yes, I recommend this pro
On time and came up with a solution. The work has not been done yet.

Guillermo V.
Aug 2015
4.0
Yes, I recommend this pro
Randy Williams is a straight talking, well experienced and reasonably priced handy/construction man. He cleaned up and mostly redone a botched stucco/ molding/ fascia board job that was left behind by a different sloppy contractor. I've hired Randy again to install new roof gutters too and have more coming down the pipeline if I'm lucky enough to catch his availability. I intend to keep hiring him...
Showing 1-25 of 121

Licensing

Licensed*

Trade License Number

795324

Trade License Locale

CA

Trade License Expiration

05/31/2027

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Bostok & Williams Roofing is currently rated 4.8 overall out of 5.

Bostok & Williams Roofing accepts the following forms of payment: CreditCard

Yes, Bostok & Williams Roofing offers free project estimates.

No, Bostok & Williams Roofing does not offer eco-friendly accreditations.

No, Bostok & Williams Roofing does not offer emergency services.

No, Bostok & Williams Roofing does not offer warranties.