--- title: "Walter D Sullivan Co Inc" description: "Walter D. Sullivan Company traces its history to a plumbing and heating business founded in 1926 by Walter D. Sullivan Sr. The New Britain company describe" doc_version: "2026-10-31" last_updated: "2026-10-31" --- # Walter D Sullivan Co Inc **Trade:** Plumbing · **Address:** 614 W Main St, New Britain, CT 06053 · **Phone:** (860) 223-3684 · **Website:** https://wdsullivanco.wordpress.com/ · **Languages:** English **Rating: 3.4/5** (low confidence) — from 0 reviews across 7 sources. ## The honest read Walter D. Sullivan Company traces its history to a plumbing and heating business founded in 1926 by Walter D. Sullivan Sr. The New Britain company describes its installation work on BBB as plumbing, medical gas, heating, ventilation and air conditioning for commercial, industrial and institutional applications. Its Connecticut plumbing license is active. Procore also lists plumbing and HVAC among its offered services, while BuildZoom shows 35 projects. BBB assigns the company an A+ grade, and Google displays 5 stars from one rating. **Concerns:** - Commercial installation focus — BBB description names commercial, industrial and institutional applications ## Claims & citations Every claim below is backed by real evidence rows — uncited claims are dropped in code before publication. - The company says Walter D. Sullivan Sr. founded it in 1926 as a plumbing and heating business. _(confidence: high)_ - [Official Website](https://wdsullivanco.wordpress.com) — “About (self-reported, verbatim): A company rich in family history and its craft, the Walter D. Sullivan Company, Inc. was founded in 1926 by…” - Walter D. Sullivan Company Inc.’s Connecticut plumbing license PLM.0282499-P1 is active. _(confidence: high)_ - [State License Registry](https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx) — “CT plumber license PLM.0282499-P1 registry-verified active — registry holder of record: WALTER D. SULLIVAN COMPANY INC” - Its BBB description identifies plumbing, medical gas and HVAC installation for commercial, industrial and institutional applications. _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ct/new-britain/profile/mechanical-contractors/walter-d-sullivan-co-inc-0111-87001229) — “About (Better Business Bureau, self-described): Walter D. Sullivan Co., Inc. offers installation; plumbing, medical gas, heating, ventilatin…” - The company’s BBB description specifies commercial, industrial and institutional installation work. _(confidence: high)_ - [Better Business Bureau](https://www.bbb.org/us/ct/new-britain/profile/mechanical-contractors/walter-d-sullivan-co-inc-0111-87001229) — “About (Better Business Bureau, self-described): Walter D. Sullivan Co., Inc. offers installation; plumbing, medical gas, heating, ventilatin…” - BuildZoom shows 35 projects for the company. _(confidence: high)_ - [BuildZoom](https://www.buildzoom.com/contractor/walter-d-sullivan-co-inc) — “35 project(s) shown on BuildZoom” - BBB assigns an A+ grade, and Google displays 5 stars from one rating. _(confidence: high)_ - [Google](https://www.google.com/maps/search/?api=1&query=Walter%20D%20Sullivan%20Co%20Inc&query_place_id=ChIJXe74Gdiz54kRYihhdEJjsVA) — “Google: 5★ from 1 ratings” - [Better Business Bureau](https://www.bbb.org/us/ct/new-britain/profile/mechanical-contractors/walter-d-sullivan-co-inc-0111-87001229) — “Better Business Bureau grade: A+” - Specializes in Plumbing _(confidence: high)_ - [Official Website](https://wdsullivanco.wordpress.com) — “About (self-reported, verbatim): A company rich in family history and its craft, the Walter D. Sullivan Company, Inc. was founded in 1926 by…” - [Better Business Bureau](https://www.bbb.org/us/ct/new-britain/profile/mechanical-contractors/walter-d-sullivan-co-inc-0111-87001229) — “About (Better Business Bureau, self-described): Walter D. Sullivan Co., Inc. offers installation; plumbing, medical gas, heating, ventilatin…” - Also offers HVAC / Heating & Cooling _(confidence: medium)_ - [Better Business Bureau](https://www.bbb.org/us/ct/new-britain/profile/mechanical-contractors/walter-d-sullivan-co-inc-0111-87001229) — “About (Better Business Bureau, self-described): Walter D. Sullivan Co., Inc. offers installation; plumbing, medical gas, heating, ventilatin…” - [Procore Construction Network](https://network.procore.com/p/walter-d-sullivan-company-inc-new-britain) — “Services offered (Procore Construction Network): Heating Ventilating and Air Conditioning HVAC, Plumbing” ## License Status: **active** (#PLM.0282499-P1, plumber) — verified against the official CT state registry on 2026-10-30, never self-reported. Re-check at the official registry: https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx ## Sources - [Google](https://www.google.com/maps/search/?api=1&query=Walter%20D%20Sullivan%20Co%20Inc&query_place_id=ChIJXe74Gdiz54kRYihhdEJjsVA): 5.0★ from 1 ratings - [Reddit](https://www.reddit.com/r/providence/comments/snh82j/any_rentallandlord_recommendation_vs_any_to_stay/hw2i323/): 0 community mentions discussing this business - [Procore Construction Network](https://network.procore.com/p/walter-d-sullivan-company-inc-new-britain): Listed on this source - [Official Website](https://wdsullivanco.wordpress.com): 100 yrs in business · Self-reported profile and service details - [Better Business Bureau](https://www.bbb.org/us/ct/new-britain/profile/mechanical-contractors/walter-d-sullivan-co-inc-0111-87001229): Listed on this source - [BuildZoom](https://www.buildzoom.com/contractor/walter-d-sullivan-co-inc): Listed on this source - [Local News](https://www.legacy.com/us/obituaries/legacyremembers/helen-sullivan-obituary?id=52729628): Listed on this source ## Mentions Unverified third-party mentions found on the open web — relay with attribution ("a Reddit commenter said…"), never as Tavlee's own finding. - “He worked for Walter D. Sullivan Mechanical Contractors for over 30 years.” — courant.com — https://www.courant.com/obituaries/fred-baruffi-new-britain-ct/ --- Data freshness: last scanned 2026-10-30T21:56:04.857Z. Cite as: Walter D Sullivan Co Inc — Tavlee (https://tavlee.com/contractor/walter-d-sullivan-co-inc-new-britain) Source: https://tavlee.com/contractor/walter-d-sullivan-co-inc-new-britain ## Sitemap [Full site index](https://tavlee.com/sitemap.md)