Gph Services Llc

What Gph Services Llc does

GPH Services LLC is a privately held residential remodeling and renovation contractor founded in 2001 by Aaron Whittaker, headquartered in a 1923 building at 15003 Charlevoix St., Grosse Pointe Park, Michigan. The company serves homeowners in The Pointes and the broader metro Detroit area, executing additions, bathroom and kitchen remodels, whole-home renovations, and — distinctively — historic restoration of period properties, including ornate plaster work, original brass hardware, and period-appropriate replication of architectural details.

The firm's technical foundation is a large in-house woodworking shop (the GPH Shop) staffed by craftsmen equipped with specialized tools, enabling custom furniture, cabinetry, shelving, built-ins, corbels, mantels, and historic replicas using materials such as laser-cut glass and cast iron. Capabilities also span the full trade stack — plumbing, electrical, plaster repair, drywall, windows, roofing, waterproofing, tuck pointing, and basements — allowing GPH to manage complete renovation projects either directly or through subcontractors held to internal craftsmanship standards.

The business model is project-based residential contracting priced on a quote-per-project basis, with revenue generated as one-time fees. Go-to-market is sales-led but overwhelmingly referral-driven: the company states that 95% of business comes from customer recommendations since 2001, supported by a Houzz review presence, Facebook and Instagram (@gph_designstudio) accounts, and repeated feature in the Cottage Hospital Auxiliary Grosse Pointe Kitchen Tour. The company is founder-owned with no external investment, subsidiaries, or parent organization disclosed.

Name

Gph Services Llc

Legal name

GPH Services LLC

Website

https://gphservices.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

1–10 employees

Short description

GPH Services LLC is a privately held residential remodeling and historic restoration contractor founded in 2001, serving affluent homeowners across Grosse Pointe and metro Detroit with custom renovations, period-appropriate restoration, and in-house custom millwork.

Ownership category

akta.pro rank

Headquarters

HQ city

Sanford

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

Revenue model

1. Residential Renovation and Remodeling Services: Project-based construction and renovation services for residential properties including additions, bathrooms, kitchens, and whole-home remodels. Revenue is generated through one-time project fees with pricing based on project scope and specifications. The company offers design services or works with customer-provided architects.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

GPH Services is a residential remodeling, renovation, and historic restoration contractor serving homeowners in Grosse Pointe and metro Detroit. Its core offerings span home additions, bathroom and kitchen remodels, period-appropriate historic restoration, and custom furniture/millwork produced in its in-house woodworking shop. Ancillary trade services (plumbing, electrical, plaster repair, drywall, roofing, waterproofing, tuck pointing) allow the company to manage complete renovation projects.

Product overview

GPH Services is a home remodeling and renovation company offering a unified set of services rather than a software platform. The core offerings include five integrated service categories: Additions (custom home additions matching architectural character), Baths (complete bathroom remodeling), Kitchens (custom kitchen design and installation), Restoration (historic preservation and renovation), and Furniture and Millwork (custom woodworking through their GPH Shop). These services are delivered through their own craftsmen and subcontractors, supporting projects from small repairs to whole-home remodels. The company also provides ancillary trade services including plumbing, electrical, plaster repair, drywall, windows, roofing, waterproofing, and more, allowing them to manage complete renovation projects.

Differentiator

Problem solved

Functional benefit

Products and services

• Additions Home addition services including kitchen and family room additions, second-floor additions, and seamless additions that match the architectural character of existing homes, for homeowners in Grosse Pointe and metro Detroit.
• Baths Complete bathroom remodeling including traditional baths with claw-foot tubs, marble master bathrooms, and transitional style bathrooms with modern and traditional details, for homeowners in Grosse Pointe and metro Detroit.
• Kitchens Custom kitchen remodeling featuring custom cabinetry, islands, countertops, backsplashes, and complete kitchen redesigns including opening spaces to family rooms, for homeowners in Grosse Pointe and metro Detroit.
• Restoration Historic restoration services for period homes including authentic preservation of original details, restoration of historic doors, and renovation of historic buildings, targeting homeowners of historic properties in Grosse Pointe and metro Detroit.
• Furniture and Millwork Custom furniture and millwork creation through GPH's woodworking shop, producing tables, shelving, built-ins, corbels, mantels, historic replicas, and custom cabinetry for interiors and exteriors, for homeowners in Grosse Pointe and metro Detroit.
• GPH Shop Large in-house woodworking shop with specialized tools and craftsmen capable of creating custom furniture, cabinetry, and decorative elements for interiors and exteriors, supporting the company's remodeling and restoration projects.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Scale indicators4 records

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• Window World: National window replacement franchise with broad residential remodeling exposure. Comparable as a residential renovation services provider serving homeowners, though much larger scale and lower price tier than GPH's bespoke offering.
• Home Depot: Largest U.S. home improvement retailer offering products, installation services, and pro contractor referrals. Comparable indirectly as a homeowner renovation ecosystem player that competes for the same home improvement budget and adjacent services.
• Lowe's: National home improvement retailer with installation services across kitchen, bath, and home renovation. Comparable as a broad incumbent in the residential renovation services space competing for similar homeowner spend.
• Power Home Remodeling: National residential exterior remodeler specializing in roofing, siding, and windows for homeowners. Comparable to GPH as a residential renovation services provider, though much larger in scale and lacking GPH's historic-restoration specialization.

Direct peers

• Mr. Handyman: Franchise-based residential repair, maintenance, and remodeling services company. Comparable to GPH's smaller project work (plaster repair, drywall, windows, electrical, plumbing), though lacking historic restoration depth.
• Renewal by Andersen: National window and door replacement franchise serving upscale homeowners. Comparable to GPH as a residential renovation specialist serving similar affluent homeowner segments, though focused on a narrower product category.
• Bath Fitter: Specialty bathroom renovation company offering tub and shower replacements and full bath remodels to homeowners. Comparable as a residential bath renovation service provider competing in the same use case segment.
• Re-Bath: National bath and kitchen remodeling franchise serving homeowners with full remodel services. Directly comparable to GPH's bath and kitchen service lines, though operating through a franchise model rather than bespoke local craftsmanship.
• DreamMaker Bath & Kitchen: Franchise-based full-service bath and kitchen remodeling company serving homeowners with design-build services. Comparable to GPH's bath and kitchen remodeling offerings in target customer and service scope.

Emerging players

• Angi: Digital home services marketplace connecting homeowners with local contractors across renovation, repair, and remodeling categories. Comparable as an emerging channel player competing for the homeowner-discovery step that GPH currently relies on referrals to bypass.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights5 records

Customer concentration

• Facebookfacebook.com/GPH-Services-1674716549446853
• Instagraminstagram.com/gph_designstudio
• LinkedInlinkedin.com/company/g-p-h-services

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 Gph Services Llc