# Gibson Waterproofing **Trade:** Waterproofing / Foundation · **Address:** 21 6 Penny Ln, Harwich, MA 02645 · **Phone:** (508) 432-2417 · **Languages:** English **Rating: 3.6/5** (low confidence) — from 1 reviews across 4 sources. ## The honest read Gibson Waterproofing works out of Harwich, handling foundation leaks and basement water problems on Cape Cod. The company has been around since 2006, per its BBB profile, and is run by owner William Gibson III. The one detailed account available is a strong one: a Google reviewer describes a leaking foundation fixed within an hour, calling the owner, Bill, pleasant and professional throughout. The company's Procore Network listing tracks 64 projects spanning commercial, industrial and residential work, though it publishes no customer ratings of its own. Before booking, it's worth asking for a couple of recent references — there's only one customer review to go on publicly, and the BBB profile carries no rating (Gibson Waterproofing isn't BBB-accredited, though nothing on file points to any complaint either). **Strengths:** - Fast leak repair — fixed a foundation leak within an hour - Long track record — in business since 2006, per BBB **Concerns:** - Limited review history — only one customer review found online ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - In business since 2006, per its BBB profile. _(confidence: medium)_ - [Better Business Bureau](https://www.bbb.org/us/ma/harwich/profile/construction-services/gibson-waterproofing-0021-511827) — “BBB profile for Gibson Waterproofing, 21 Six Penny Ln, Harwich MA 02645, owner William Gibson III, business started 2006 (20 years in busine…” - Owned by William Gibson III, per BBB. _(confidence: medium)_ - [Better Business Bureau](https://www.bbb.org/us/ma/harwich/profile/construction-services/gibson-waterproofing-0021-511827) — “BBB profile for Gibson Waterproofing, 21 Six Penny Ln, Harwich MA 02645, owner William Gibson III, business started 2006 (20 years in busine…” - A Google reviewer describes a leaking foundation fixed within an hour, praising the owner's professionalism. _(confidence: medium)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tORGJIVm9jWEptTlhOSk16UXdaMVJIY21sSlZFRRAB!2m1!1s0x0:0xe02d9aa03b04c40!3m1!1s2@1:CAIQACodChtycF9oOkNDbHVocXJmNXNJMzQwZ1RHcmlJVEE%7C%7C?hl=en) — “5★ What an amazing company! The owner Bill was very pleasant and took the time to address all of my concerns! They promptly addressed the …” - 5-star Google rating from a single review. _(confidence: low)_ - [Google](https://www.google.com/maps/search/?api=1&query=Gibson%20Waterproofing&query_place_id=ChIJ2xHgSFA--4kRQEywA6rZAg4) — “Google: 5★ from 1 ratings” - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tORGJIVm9jWEptTlhOSk16UXdaMVJIY21sSlZFRRAB!2m1!1s0x0:0xe02d9aa03b04c40!3m1!1s2@1:CAIQACodChtycF9oOkNDbHVocXJmNXNJMzQwZ1RHcmlJVEE%7C%7C?hl=en) — “5★ What an amazing company! The owner Bill was very pleasant and took the time to address all of my concerns! They promptly addressed the …” - Tracked on Procore's construction network with 64 projects logged, spanning commercial, industrial and residential work. _(confidence: medium)_ - [Procore Construction Network](https://network.procore.com/p/gibson-waterproofing-inc.-harwich-port) — “64 project(s) shown on Procore Construction Network” - [Procore Construction Network](https://network.procore.com/p/gibson-waterproofing-inc.-harwich-port) — “Procore Network B2B profile (claimed) for Gibson Waterproofing Inc., Harwich Port MA, phone 508-432-2417 (matches); Specialty Contractor ser…” - Only one public customer review is on file, so the track record is thin. _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tORGJIVm9jWEptTlhOSk16UXdaMVJIY21sSlZFRRAB!2m1!1s0x0:0xe02d9aa03b04c40!3m1!1s2@1:CAIQACodChtycF9oOkNDbHVocXJmNXNJMzQwZ1RHcmlJVEE%7C%7C?hl=en) — “5★ What an amazing company! The owner Bill was very pleasant and took the time to address all of my concerns! They promptly addressed the …” - Specializes in Waterproofing / Foundation _(confidence: high)_ - [Google Reviews](https://www.google.com/maps/reviews/data=!4m8!14m7!1m6!2m5!1sCi9DQUlRQUNvZENodHljRjlvT2tORGJIVm9jWEptTlhOSk16UXdaMVJIY21sSlZFRRAB!2m1!1s0x0:0xe02d9aa03b04c40!3m1!1s2@1:CAIQACodChtycF9oOkNDbHVocXJmNXNJMzQwZ1RHcmlJVEE%7C%7C?hl=en) — “5★ What an amazing company! The owner Bill was very pleasant and took the time to address all of my concerns! They promptly addressed the …” ## License Status: **not_found** — verified against the official MA state registry, never self-reported. Re-check at the official registry: https://contractorhub.mass.gov/s/hic-contractor-search ## Sources - [Google](https://www.google.com/maps/search/?api=1&query=Gibson%20Waterproofing&query_place_id=ChIJ2xHgSFA--4kRQEywA6rZAg4): 5.0★ from 1 ratings - [Google Reviews](https://www.google.com/maps/search/?api=1&query=Gibson%20Waterproofing&query_place_id=ChIJ2xHgSFA--4kRQEywA6rZAg4): Listed on this source - [Better Business Bureau](https://www.bbb.org/us/ma/harwich/profile/construction-services/gibson-waterproofing-0021-511827): Listed on this source - [Procore Construction Network](https://network.procore.com/p/gibson-waterproofing-inc.-harwich-port): Listed on this source ## Recent reviews - **5/5 · Google Reviews · joe fallon · 2025-12-19**: What an amazing company! The owner Bill was very pleasant and took the time to address all of my concerns! They promptly addressed the problem with my foundation leaking water and fixed it within an hour! 10/10 review for Gibson waterproofing! Very professional, very respectful, and answered any… --- Data freshness: last scanned 2026-08-23T05:19:02.381Z. Cite as: Gibson Waterproofing — Tavlee (https://tavlee.com/contractor/gibson-waterproofing-harwich) Source: https://tavlee.com/contractor/gibson-waterproofing-harwich