---
title: "Dennis Gallagher Construction — General Contractors | Houzz"
canonical_html_url: https://www.houzz.com/professionals/general-contractors/dennis-gallagher-construction-pfvwus-pf~1512005718
markdown_url: https://www.houzz.com/md/professionals/pf~1512005718.md
entity_type: LocalBusiness
business_name: "Dennis Gallagher Construction"
category: ["General Contractors"]
image: https://st.hzcdn.com/fimgs/00d31b930dadd2c9_2778-w400-h400-b0-p0--.jpg
address: "7 Oldfield Road, Huntington, New York 11743, United States"
latitude: 40.8676
longitude: -73.4102
phone: "(631) 252-1299"
website: http://
rating: 5
review_count: 1
followers: 4
last_updated: 2026-08-29
---

# Dennis Gallagher Construction

> Home Improvement Experts Serving Suffolk County for Over 5 Years

Original Houzz profile: [Dennis Gallagher Construction](https://www.houzz.com/professionals/general-contractors/dennis-gallagher-construction-pfvwus-pf~1512005718)

## Professional summary

- **Primary category:** General Contractors
- **Location:** Huntington, NY
- **Serves:** Huntington, Smithtown, Brentwood, Central Islip, Commack, Huntington Station, Deer Park, Plainview, Dix Hills, East Northport, Hauppauge, Syosset, Ronkonkoma, Melville, Kings Park, Greenlawn, Saint James, Nesconset, Stony Brook, Elwood, South Huntington, Fort Salonga, Woodbury, Northport, Centerport, Old Bethpage, West Hills, Wheatley Heights, Lloyd Harbor, Islandia, Muttontown, Cold Spring Harbor, Halesite, Laurel Hollow, Oyster Bay Cove, Village of the Branch, Huntington Bay, Nissequogue, Head of the Harbor, Eatons Neck, Asharoken, Centre Island, Cove Neck, Ft Salonga
- **Houzz rating:** 5.0 out of 5 (1 review)

## About

### Houzz Badges

- Houzz Pro Software User
- 25 Ideabook Saves
- References available
- Evening consultations
- Weekend consultations
- Provides 3D Visualization

### Business highlights

- Weekend consultations
- Evening consultations
- References available
- Provides 3D Visualization

Gallagher Construction has been in business for over 5 years. Dennis and his team do everything and anything from custom home builds to renovations, to a new kitchen! Call today for a quote and more information.

### Services Provided

- Home Remodeling
- Home Additions
- New Home Construction
- Home Extensions
- Accessory Dwelling Units (ADUs)
- Guesthouse Design & Construction
- Garage Building
- Home Restoration
- Pool House Design & Construction
- Project Management
- Multigenerational Homes
- Energy-Efficient Homes
- House Framing
- Green Building
- Demolition
- Barn Design & Construction
- Tiny House Construction
- Foundation Construction
- Carport Installation
- Sustainable Design
- Modular Home Additions
- Modular Home Construction
- Insulation Installation
- Waterproofing
- Site Preparation
- Earthquake Retrofitting
- Fireproofing
- Log Home Construction
- Storm Shelter Construction
- Floor Plans
- Custom Home
- Drafting
- Handicap-Accessible Design
- Historic Building Conservation
- House Plans
- Land Surveying
- Passive Solar Heating & Cooling
- Prefab Houses
- Site Planning
- Universal Design

### Areas Served

- Huntington
- Smithtown
- Brentwood
- Central Islip
- Commack
- Huntington Station
- Deer Park
- Plainview
- Dix Hills
- East Northport
- Hauppauge
- Syosset
- Ronkonkoma
- Melville
- Kings Park
- Greenlawn
- Saint James
- Nesconset
- Stony Brook
- Elwood
- South Huntington
- Fort Salonga
- Woodbury
- Northport
- Centerport
- Old Bethpage
- West Hills
- Wheatley Heights
- Lloyd Harbor
- Islandia
- Muttontown
- Cold Spring Harbor
- Halesite
- Laurel Hollow
- Oyster Bay Cove
- Village of the Branch
- Huntington Bay
- Nissequogue
- Head of the Harbor
- Eatons Neck
- Asharoken
- Centre Island
- Cove Neck
- Ft Salonga

## Business Details

| Field | Value |
| --- | --- |
| Business Name | Dennis Gallagher Construction |
| Address | 7 Oldfield Road, Huntington, New York 11743, United States |
| Phone | (631) 252-1299 |
| Website | http:// |
| Followers on Houzz | 4 |

## Contact

- **Houzz profile:** [Dennis Gallagher Construction](https://www.houzz.com/professionals/general-contractors/dennis-gallagher-construction-pfvwus-pf~1512005718)
- **Website:** http://
- **Phone:** (631) 252-1299

## Reviews

**Overall rating: 5.0 out of 5 — 1 review**

*Aspect averages:*
- Work Quality: 50.0
- Communication: 50.0
- Value: 50.0

### All 1 review

**★★★★★ — Matt Porzio, Dec. 2020**

> Dennis built our beautiful home in 2019.  Fast, efficient and detailed.  He is an amazing craftsman, cares about his work and his clients and his team is awesome.  He is the only person I would trust to do work in my home.

## Selected projects

- [Kirkland kitchen](https://www.houzz.com/hznb/projects/kirkland-kitchen-pj-vj~6166016)
  - Location: Greenlawn, New York
  - Photos: 5
  - Description: During this project we were able to create more of an open layout between the existing kitchen and the small formal dining room.
- [Fine Details](https://www.houzz.com/hznb/projects/fine-details-pj-vj~5918055)
  - Location: Huntington, New York
  - Photos: 4
- [Remodeled Living Spaces](https://www.houzz.com/hznb/projects/remodeled-living-spaces-pj-vj~5918061)
  - Location: Huntington, New York
  - Photos: 3
- [Newest Finished Projects](https://www.houzz.com/hznb/projects/newest-finished-projects-pj-vj~5917941)
  - Location: Huntington, New York
  - Photos: 11
- [Custom Estate](https://www.houzz.com/hznb/projects/custom-estate-pj-vj~6163696)
  - Location: Cold Spring Harbor, NY
  - Photos: 46

[See all 5 projects](https://www.houzz.com/professionals/general-contractors/dennis-gallagher-construction-pfvwus-pf~1512005718)

## Frequently Asked Questions

**Do you handle permits and inspections?**
Absolutely! As part of our comprehensive project management services, we routinely handle all necessary permits and coordinate inspections for your project. We ensure everything is compliant with local regulations here in Huntington, NY, so you don't have to worry about the complexities of the approval process. Our team manages these details efficiently.

**What kind of projects you specialise in?**
At Dennis Gallagher Construction, we specialize in a vast array of projects, from custom home builds and new home construction to extensive home remodeling and additions. We also handle unique projects like ADUs, barn construction, green building, and even tiny houses. Whether it's a full renovation or a specific room upgrade like a new kitchen, we're equipped to bring your vision to life here in Huntington, NY.

**Do you handle full home additions and major renovations?**
Yes, absolutely! Dennis Gallagher Construction specializes in both full home additions and major renovations. Our services include extensive home remodeling, home additions, and home extensions, as well as custom home builds. We have the expertise and experience to transform your entire living space or expand it significantly, handling projects of all scales here in Huntington, NY.

**Can you help with design and material selection?**
Yes, we can certainly assist with design aspects! Our services include drafting, creating floor plans, and developing house plans, along with specialized design for guesthouses, pool houses, and barns. While our Houzz profile doesn't explicitly detail material selection, our team works closely with clients throughout the design process to guide them in choosing the best materials to match their vision and budget.

**What makes your general contracting services different from others locally?**
What sets Dennis Gallagher Construction apart in Huntington, NY, is our extensive range of services and commitment to custom solutions. With over 5 years in business, we truly handle 'everything and anything,' from complex custom home builds and ADUs to detailed renovations and specialized projects like green building. Our comprehensive approach ensures we can tackle diverse needs under one roof, providing a seamless experience.

*FAQ content may be generated based on the Pro's Houzz profile and website.*

## Ideabooks

- [dennis\_gallagher60's ideas](https://www.houzz.com/ideabooks/64253451/list/dennis-gallagher60-s-ideas) — 115 ideas

[See all 1 ideabook](https://www.houzz.com/ideabooks/users/dfgallagher4)

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*Source: Houzz professional profile. Reflects the profile as of 2026-08-29.*