What Sea-Dar Construction does

Sea-Dar Construction is a Boston-headquartered, privately held general contractor founded in 1991 by structural engineer Jean Abouhamad, specializing in high-end residential and technically complex commercial construction across the U.S. Northeast. The firm delivers luxury urban residences, fine suburban custom homes, multi-family developments, and institutional/commercial projects — including work for Harvard, Boston College, Northeastern, D.E. Shaw, and the Ames Boston Hotel — and has accumulated 50+ industry awards between 2000 and 2025, including the 2025 Design 9 National Home of the Year and a 2023 New England Design Hall of Fame induction. Operations run from five offices (Boston HQ, New York, Cape Cod, Hamptons, Greenwich) with 101–250 employees.

Name

Sea-Dar Construction

Legal name

Sea-Dar Construction

Website

https://seadar.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

101–250 employees

Short description

Sea-Dar Construction is a privately held Boston-based general contractor founded in 1991, building luxury custom homes, multi-family residences, and institutional/commercial projects for high-net-worth clients, universities, and developers across the Northeast U.S.

Ownership category

akta.pro rank

Headquarters

HQ city

Boston

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Construction Project Fees: Sea-Dar generates revenue through fixed-price or cost-plus construction contracts for custom residential, multi-family, and institutional/commercial projects. Revenue is project-based, one-time per engagement with potential for follow-on property services.
2. Property Services: Ongoing maintenance and property management services for upscale homes, including preventive maintenance, on-call services, emergency response, and capital improvements. Provides recurring revenue from existing clients.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Sea-Dar Construction is a general contractor providing luxury residential and commercial construction services across the Northeast U.S., including custom homes, townhouses, estates, multi-family residences, and institutional/commercial projects such as university buildings, laboratories, hotels, and office fit-outs. The firm also operates a Property Services Division that delivers ongoing preventive maintenance, on-call service, 24-hour emergency response, and capital improvements for upscale homes. Services are organized around project-based construction management with specialization in technically complex, historic preservation, and tight urban setting work.

Product overview

Sea-Dar Construction is a general contractor specializing in high-end residential and commercial construction. The company operates as a single unified service offering rather than a platform with separate products. Their core construction services are organized into six main categories: Townhouses, Condo Fit-Outs, Estates, Multi-Family Residences, and Institutional/Commercial projects. Additionally, their Property Services Division provides ongoing maintenance and preservation services for upscale homes. The company has over 30 years of experience building luxury urban residences, custom homes, and technically complex institutional and commercial structures. Projects range from gut renovations and restorations to new construction, with expertise in tight urban settings, historic preservation, and complex technical requirements.

Differentiator

Problem solved

Functional benefit

Products and services

• Luxury Residential Construction
• Multi-Family Residential Construction
• Institutional and Commercial Construction
• Property Services Division

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Gilbane Building Company: National family-owned GC with a strong Boston/Rhode Island presence. Competes with Sea-Dar on institutional, higher-education, and life-science projects and represents the larger incumbent competitor for similar project types.
• Skanska USA: Global construction and development firm with major Northeast US operations. Competes on large commercial, institutional, and life-science projects in the same Boston/NY/Cambridge corridor as Sea-Dar.
• Whiting-Turner Contracting Company: National GC with significant Northeast presence across commercial, institutional, and life-science markets. Larger scale than Sea-Dar but frequently competes for the same institutional clients in the Boston-to-NY corridor.
• Suffolk Construction: One of the largest privately held GCs in the US, headquartered in Boston. While substantially larger and broader in scope, it overlaps with Sea-Dar on commercial, institutional, and higher-end residential work across the same Northeast geographies.

Direct peers

• BOWA Builders: Washington DC-area luxury custom home builder and remodeler focused on high-net-worth clients, historic preservation, and architect-driven projects. Closest direct peer in the luxury residential specialist niche, though operating in a different region.
• Consigli Construction: Massachusetts-based general contractor with comparable institutional and higher-education work (Harvard-adjacent projects) and residential/life-science diversification. Similar mid-Atlantic/Northeast regional footprint.
• Lee Kennedy Company: Boston-based general contractor performing commercial, institutional, and select luxury residential projects. Comparable in size and regional scope, often competing for the same institutional and high-end residential clients in Greater Boston.
• Columbia Construction: North Reading, MA-based commercial general contractor with strong institutional and corporate-client work in the Northeast. Overlaps with Sea-Dar on commercial build-outs and life-science/office fit-outs.
• Shawmut Design and Construction: Boston-headquartered full-service general contractor with a comparable mix of commercial, institutional, and luxury residential work in the Northeast. Similar scale (501-1,000 employees) and overlapping client segments make it the closest regional peer to Sea-Dar.

Emerging players

• Tocci Building Corporation: Woburn, MA-based integrated construction and real estate services firm. Comparable in size and Northeast footprint, with growing work in life-science and high-end residential conversions that overlap with Sea-Dar's institutional/commercial portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/seadar
• LinkedInlinkedin.com/company/sea-dar-construction

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sea-Dar Construction