Gallagher Co. LLC

What Gallagher Co. LLC does

Gallagher Co. LLC (also operating as Gallagher Co. Construction) is a private, founder-owned luxury custom home builder and general contractor headquartered on Mercer Island, Washington. Founded in 2005 by Tom and Leanne Gallagher from a single residential remodel, the firm has grown to a team of more than 20 employees and now operates across the Puget Sound region. Its core services are ground-up custom home construction, major home remodels and renovations, outdoor living space design and build, and — increasingly — small-to-mid-sized commercial construction across King, Snohomish, and Pierce Counties. A distinct specialization is waterfront property construction on Mercer Island and Lake Washington, where the firm has five such projects underway.

The business is built on a relationship-driven, referral-led go-to-market model in which the principal sales motion is a consultation-based engagement that progresses from initial vision and lot discussion through design team assembly, budget development, and full construction management over an 18-30 month timeline. Pricing is unit-based, with custom homes starting at $600+ per square foot before land, and clients are advised to plan for 5-10% contingency. Marketing is concentrated on client/architect/designer referrals, an active blog, social media, and earned media (notably LUXE Interiors + Design Gold List Honoree in 2021 and 2024, and three consecutive years on the Puget Sound Business Journal's Fastest Growing Companies list). There is no disclosed revenue, no external funding, no parent company, and no AI or proprietary technology stack; the company's competitive position rests on its deeply experienced field team, its local brand, and the high switching cost of mid-construction builder changes.

Name

Gallagher Co. LLC

Legal name

Gallagher Co. Construction

Website

https://gallagherco.net

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

11–50 employees

Short description

Gallagher Co. LLC is a Mercer Island, Washington-based luxury custom home builder founded in 2005 by Tom and Leanne Gallagher, serving high-net-worth residential clients and small commercial customers across the Puget Sound region with custom homes, remodels, outdoor living, and waterfront construction at $600+ per square foot.

Ownership category

akta.pro rank

Product category

Luxury Custom Home Construction

NAICS

New Single-Family Housing Construction (except For-Sale Builders) (236115), Residential Remodelers (236118), Commercial and Institutional Building Construction (23622)

SIC

General Bldg Contractors - Residential Bldgs (1520), General Bldg Contractors - Nonresidential Bldgs (1540)

akta.pro primary industry

Residential Luxury / High-End Home Construction (IMAFABAJ)

akta.pro secondary industries

Luxury Whole-Home Renovation (High-End Finishes & Custom Build) (HSAPAEAI), Residential Design-Build & Renovation-Integrated Builders (IMAFABAE), Patio Construction (Pavers, Concrete & Stone) (HSAPALAB)

Keywords

• Custom home construction
• Luxury home builder
• Home remodeling services
• Commercial construction
• Waterfront construction

Headquarters

HQ city

Mercer Island

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Custom Home Construction: Ground-up custom home construction with projects typically ranging from $600+ per square foot. Revenue is project-based and one-time per construction engagement. Full control over design, materials, and architectural direction for each unique home.
2. Home Remodeling and Renovation: Major remodels, structural redesigns, additions, open-concept conversions, and luxury interior upgrades. Projects vary in scope and duration.
3. Commercial Construction: Small to mid-sized local commercial projects including tenant improvements, storage centers, warehouse space, boutique commercial spaces, office spaces, and retail environments across King, Snohomish, and Pierce Counties.
4. Outdoor Living Spaces: Premium outdoor environments including decks, patios, outdoor kitchens, covered structures, fire features, hardscaping, and waterfront environments.

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels6 records

Core offering

Gallagher Co. LLC builds luxury custom homes, performs major home remodels and renovations, executes small-to-mid-sized commercial construction projects, and designs and builds premium outdoor living spaces across Mercer Island, King, Snohomish, and Pierce Counties. Its core specialization is waterfront home construction and remodeling on Lake Washington, with projects ranging from $600+ per square foot before land. Each engagement is delivered under a multi-year project contract with structured design collaboration, weekly progress updates, and a final move-in readiness inspection.

Product overview

Gallagher Co. LLC is a luxury custom home builder offering a unified suite of construction services centered on custom home construction, home remodeling, commercial projects, and outdoor living spaces. The company's primary offerings include ground-up custom homes (their core product), major home remodels and renovations, commercial construction services across multiple counties, and premium outdoor living space design and build. A key specialization is waterfront property construction and remodeling on Mercer Island and Lake Washington. Each service area has dedicated portfolio showcases displaying completed projects. The company was founded in 2005, employs over 20 people, and operates throughout the Puget Sound region with a focus on Mercer Island and neighboring communities.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 18-30 months from initial conversations through move-in for new home construction
• +2 more outcomes

Named customers7 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Architects and DesignerscoreStrategic or Co-development PartnerPartners closely with client's chosen architect/designer or can recommend architects and designers who align with client's style and project type. Acts as construction advisor through design phase, reviewing plans for budget alignment, site buildability, material selections, and schedule implications.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• Charter Construction: Large Pacific Northwest general contractor with both commercial and high-end residential divisions; comparable in commercial tenant-improvement work and broader project scale than Gallagher.
• Toll Brothers: National luxury homebuilder with Puget Sound operations; competes for the same high-net-worth custom and luxury move-up buyer though at greater scale and with a broader portfolio approach.

Direct peers

• Ventana Construction: Seattle-based builder offering both luxury residential custom homes and commercial construction; comparable to Gallagher in the dual residential/commercial service model.
• Dovetail Construction: Luxury custom home builder based in Bellevue, WA serving the Eastside including Mercer Island. Directly comparable in product (ground-up custom), price point, customer segment (high-net-worth), and geography (Puget Sound).
• Belmark Builders: Pacific Northwest luxury custom home builder with presence in the Eastside luxury market; comparable project scale, design-collaboration approach, and remodels/renovations offering.
• Cascade Custom Homes & Remodeling: Pacific Northwest custom home builder and remodeler with similar luxury positioning, waterfront expertise, and design-build delivery model in the greater Seattle market.
• Adam Leland Homes: Bellevue-based custom home builder focused on luxury residences on the Eastside of Lake Washington. Comparable in price point, project type, and target demographic to Gallagher Co.'s core offering.
• Sammamish Plateau Construction: Eastside-based custom home builder serving Mercer Island-adjacent communities with luxury and semi-custom offerings; overlaps in customer segment and product category.
• JC Custom Homes & Remodeling: Eastside (Issaquah/Sammamish) custom home builder and remodeler serving Mercer Island-adjacent luxury market. Overlaps directly in product category and customer base.
• Ellison Custom Builders: Seattle-area luxury custom home builder specializing in high-end residential construction with similar design-build collaboration model and Eastside/Westside geographic overlap.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/gallagherco
• LinkedInlinkedin.com/company/gallagher-co-llc

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Funding overview

Funding rounds

Investors

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

M&A

Investments2 records

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

Frequently asked questions about Gallagher Co. LLC