---
title: "Kevin O'Sullivan + Associates — Architects & Building Designers | Houzz"
canonical_html_url: https://www.houzz.com/professionals/architects-and-building-designers/kevin-o-sullivan-associates-pfvwus-pf~1261471742
markdown_url: https://www.houzz.com/md/professionals/pf~1261471742.md
entity_type: LocalBusiness
business_name: "Kevin O'Sullivan + Associates"
category: ["Architects"]
image: https://st.hzcdn.com/fimgs/4c2305670b71acd6_1875-w400-h400-b0-p0--.jpg
address: "2408 Main St., Suite B, Bridgehampton, New York 11932, United States"
latitude: 40.9339
longitude: -72.3077
phone: "(631) 267-3038"
website: http://www.kosullivan.com
rating: 0
review_count: 0
best_of_houzz_awards: 6
followers: 46
last_updated: 2026-09-03
---

# Kevin O'Sullivan + Associates

Original Houzz profile: [Kevin O'Sullivan + Associates](https://www.houzz.com/professionals/architects-and-building-designers/kevin-o-sullivan-associates-pfvwus-pf~1261471742)

## Professional summary

- **Primary category:** Architects
- **Location:** Bridgehampton, NY
- **Serves:** Manhattan, Southampton, East Hampton, Southold, Springs, North Sea, East Hampton North, Northwest Harbor, Noyack, Shelter Island, Cutchogue, Sag Harbor, Water Mill, Shinnecock Hills, Watermill, Bridgehampton, North Haven, Peconic, Amagansett, Wainscott, New Suffolk, Sagaponack, Miami, Shinecock Hills
- **Houzz rating:** 0.0 out of 5 (0 reviews)
- **Best of Houzz:** 6 awards (2019–2025), for Design.

## About

### Houzz Badges

- Houzz Influencer
- 10,000 Ideabook Saves

Luxury residential architecture and interior design firm specializing in modern homes in the Hamptons and beyond.  Full-service, client-first collaborative design approach.

### Services Provided

- Architectural Design
- Building Design
- Home Remodeling
- Architectural Drawings
- House Plans
- Home Additions
- Home Extensions
- Kitchen Design
- Sustainable Design
- Kitchen Remodeling
- Energy-Efficient Homes
- Floor Plans
- 3D Rendering
- Bathroom Design
- Green Building
- Space Planning
- Guesthouse Design & Construction
- Universal Design
- Multigenerational Homes
- Pool House Design & Construction
- Home Restoration
- Drafting
- Historic Building Conservation
- Project Management
- Handicap-Accessible Design
- Outdoor Kitchen Design
- Barn Design & Construction
- Basement Remodeling
- Mudroom Design
- Basement Design
- Tiny House Construction
- Staircase Design
- Deck Design
- Garage Design
- Laundry Room Design
- Landscape Plans
- Passive Solar Heating & Cooling
- Home Gym Design & Construction
- Custom Homes

### Areas Served

- Manhattan
- Southampton
- East Hampton
- Southold
- Springs
- North Sea
- East Hampton North
- Northwest Harbor
- Noyack
- Shelter Island
- Cutchogue
- Sag Harbor
- Water Mill
- Shinnecock Hills
- Watermill
- Bridgehampton
- North Haven
- Peconic
- Amagansett
- Wainscott
- New Suffolk
- Sagaponack
- Miami
- Shinecock Hills

### Typical Job Cost

$2 million - 13 million

## Business Details

| Field | Value |
| --- | --- |
| Business Name | Kevin O'Sullivan + Associates |
| Address | 2408 Main St., Suite B, Bridgehampton, New York 11932, United States |
| Phone | (631) 267-3038 |
| Website | http://www.kosullivan.com |
| Followers on Houzz | 46 |

**Social profiles:**
- Facebook — www.facebook.com/kosullivan.design/
- Blog — www.kosullivan.com

## Contact

- **Houzz profile:** [Kevin O'Sullivan + Associates](https://www.houzz.com/professionals/architects-and-building-designers/kevin-o-sullivan-associates-pfvwus-pf~1261471742)
- **Website:** http://www.kosullivan.com
- **Phone:** (631) 267-3038

## Credentials

- **Best of Houzz:** 6 awards (2019–2025), for Design.

## Selected projects

- [Sag Harbor Waterfront Modern 2](https://www.houzz.com/hznb/projects/sag-harbor-waterfront-modern-2-pj-vj~6317811)
  - Location: Sag Harbor, NY
  - Photos: 42
- [Bridgehampton Modern Estate](https://www.houzz.com/hznb/projects/bridgehampton-modern-estate-pj-vj~5800257)
  - Location: North Sea, NY
  - Photos: 23
  - Description: Modern beach estate designed by Kevin O'Sullivan + Associates (project team Kevin O'Sullivan, Luke Ferran, Jorge Gomez), built by White Oak Builders, landscape design + install by Verderber. All photography by Justin Bellucci. Primary materials are natural mahogany rain screen and Indiana limestone. Windows by Fleetwood and provided by North Shore Window & Door. Kitchen by Henrybuilt.
- [Amagansett Modern Barn Style](https://www.houzz.com/hznb/projects/amagansett-modern-barn-style-pj-vj~5493449)
  - Location: Amagansett, NY
  - Photos: 25
- [Southampton Village](https://www.houzz.com/hznb/projects/southampton-village-pj-vj~4268467)
  - Location: Southampton, NY
  - Photos: 21
- [Amagansett Lane Modern](https://www.houzz.com/hznb/projects/amagansett-lane-modern-pj-vj~6052915)
  - Location: Amagansett, New York
  - Photos: 21
  - Description: 7,000sf+ contemporary home featuring a Boffi kitchen, iversized swimming pool, dual master suites, Dornbracht plumbing fixtures, mahogany rain screen siding and Fleetwood windows. Custom bleached oak flooring throughout with marbke bathrooms. KOS+A project team Kevin O’Sullivan, Luke Ferran, Jorge Gomez, and Kate Wirth. Photography by Read McKendree.
- [Amagansett Modern Beach House](https://www.houzz.com/hznb/projects/amagansett-modern-beach-house-pj-vj~4268129)
  - Location: Amagansett, NY
  - Photos: 16
  - Description: Modern beachouse in The Hamptons. Finishes include mahogany rain screen, zinc panels, custom colored stucco, bleached white oak floors, black + ocean travertine, basaltina, shou shugi ban walls, and clear + bleached American walnut.
- [Redwood Rd., Sag Harbor Modern](https://www.houzz.com/hznb/projects/redwood-rd-sag-harbor-modern-pj-vj~6267191)
  - Location: Sag Harbor, NY
  - Photos: 4
- [Sagaponack Oceanfront](https://www.houzz.com/hznb/projects/sagaponack-oceanfront-pj-vj~4279147)
  - Location: Sagaponack, NY
  - Photos: 41
- [East Hampton Village Modern](https://www.houzz.com/hznb/projects/east-hampton-village-modern-pj-vj~5683478)
  - Location: East Hampton, NY
  - Photos: 5
- [Bluff Road Modern Pavilion](https://www.houzz.com/hznb/projects/bluff-road-modern-pavilion-pj-vj~5801508)
  - Location: Amagansett, NY
  - Photos: 8
  - Description: Modern beach-side pavilion with clear cedar and buff limestone. Bluestone pavers and Fleetwood windows installed by North Shore Window & Door. Home built by McLoughlin Construction Corporation with landscape design and install by Landscape Details.
- [East Hampton Waterfront](https://www.houzz.com/hznb/projects/east-hampton-waterfront-pj-vj~4280615)
  - Location: East Hampton, NY
  - Photos: 11
- [Fifth Avenue New York City Apartment](https://www.houzz.com/hznb/projects/fifth-avenue-new-york-city-apartment-pj-vj~4268352)
  - Location: New York, NY
  - Photos: 9
- [Amagansett Bell Estate](https://www.houzz.com/hznb/projects/amagansett-bell-estate-pj-vj~4279700)
  - Location: Amagansett, NY
  - Photos: 44
- [East Hampton Further Lane](https://www.houzz.com/hznb/projects/east-hampton-further-lane-pj-vj~4279972)
  - Location: East Hampton, NY
  - Photos: 11
- [Manhattan Townhouse](https://www.houzz.com/hznb/projects/manhattan-townhouse-pj-vj~4280481)
  - Location: New York, NY
  - Photos: 9
- [Montauk Oceanfront](https://www.houzz.com/hznb/projects/montauk-oceanfront-pj-vj~4282156)
  - Location: Montauk, NY
  - Photos: 9
- [East Hampton 5](https://www.houzz.com/hznb/projects/east-hampton-5-pj-vj~7069587)
  - Location: East Hampton, NY
  - Photos: 23
- [East Hampton Village 4](https://www.houzz.com/hznb/projects/east-hampton-village-4-pj-vj~6698307)
  - Location: East Hampton, NY
  - Photos: 26

[See all 18 projects](https://www.houzz.com/professionals/architects-and-building-designers/kevin-o-sullivan-associates-pfvwus-pf~1261471742)

## Ideabooks

- [Kevin O'Sullivan + Associate's ideas](https://www.houzz.com/ideabooks/112975895/list/kevin-o-sullivan-associate-s-ideas) — 5 ideas

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

## Community Q&A

**Q: Gorgeous bath, what is the stone in wet room?** *(in Photo Questions)*

Love to know type and size of stone. Thanks

A: Hi!  It’s 12x24 “ocean” travertine. Good luck!

**Q: Doors?** *(in Photo Questions)*

Can you tell me who made the doors?  Style?

A: Hi!  Sorry just seeing this today.  Doors were custom-made by a local millworker.  Essentially they are flat panel doors with routed reveals and then painted.  Good luck!

**Q: Front door** *(in Photo Questions)*

Door and sidelight company?

A: Side lites are by Loewen.  Door is custom by a local mill worker.  Hope this helps!

**Q: love the island feet** *(in Photo Questions)*

Can u tell me where the peg legs on island are from??
I'm assuming that the tow kick is recessed and the legs are basically decorative

A: \*toe kick

**Q: pavers** *(in Photo Questions)*

what paver is this?

A: <?xml version="1.0" encoding="UTF-8"?><md>Indiana limestone.

**Q: bedroom lighting** *(in Photo Questions)*

Can i tell
Me where the hanging  bedsode lights are from
Thanks

A: Hi!  The pendant lights are from Apparatus Studio in NYC.  :-)

---

*Source: Houzz professional profile. Reflects the profile as of 2026-09-03.*