What Fox Energy Specialists does

Fox Energy Specialists is an independent third-party energy code inspection, testing, and HERS rating service provider operating exclusively in the Texas market. Formally established in 2001 as a division of The Nelrod Company — which had been providing federally required energy audit services to the affordable housing sector since 1985 — the firm operates from four Texas offices (Fort Worth corporate headquarters, Austin, Houston, San Antonio) and has certified more than 100,000 homes over its operating history. It serves production and custom homebuilders, multi-family developers, commercial builders, government agencies, affordable housing providers, and utility companies across the state.

The company's service portfolio spans residential, multi-family, and commercial construction. Core offerings include HERS Index certification, energy modeling and plan review, blower door and duct blower testing, COMcheck analysis for commercial projects, IRC county inspections, and verification services across a broad stack of green building programs including ENERGY STAR Homes, DOE Zero Energy Ready Home, NGBS, Green Built Texas, Austin Energy Green Building, Build San Antonio Green, and the City of Dallas Green Building program. Fox also delivers HERS H2O water efficiency ratings, 45L Tax Credit certification (yielding $2,500–$5,000 per qualifying home in federal tax credits, up to $5,000 per multifamily dwelling unit), and administers the proprietary FitHome Energy Guarantee — a two-year whole-home energy usage guarantee. The firm holds U.S. Patent No. US 7,389,157 (2008) for an innovative energy efficiency home inspection method and system.

Fox Energy Specialists generates revenue through professional service fees under a quote-based, pay-as-you-go model to a B2B customer base. The go-to-market is enterprise field sales executed through the four regional offices and supported by corporate functions, with an online quote request system and a web-pay portal for existing clients handling inbound and recurring billing touchpoints. The firm holds RESNET Accredited Home Energy Rating Provider status, ICC and HERS certified staff, and longstanding ENERGY STAR partnership standing, and has received extensive EPA recognition including Partner of the Year (2009), Leadership in Housing awards (2008, 2010–2013), and Market Leader awards (2019–2021). In September 2021, Fox acquired Builders Energy Rater, extending its footprint into the San Antonio, Austin, and Texas Hill Country markets.

Name

Fox Energy Specialists

Legal name

Fox Energy Specialists

Website

https://foxenergyspecialists.com

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

11–50 employees

Short description

Fox Energy Specialists is a Texas-based third-party energy code inspection, testing, and HERS rating service provider. Founded in 2001 as a division of The Nelrod Company, it serves homebuilders, multi-family developers, commercial builders, and government agencies across four Texas offices.

Ownership category

akta.pro rank

Product category

Energy inspection and HERS rating services

SIC

Services-Commercial Physical & Biological Research (8731)

akta.pro primary industry

Third-Party Certification, Code Compliance & Regulatory Inspection (ASME/API/ISO) (EUAEAHAN)

akta.pro secondary industry

Performance Testing & Acceptance/Condition Assessments (Baseline, Post-Repair) (EUAEAKAK)

Keywords

• Home energy rating services
• Energy code inspections
• HERS Index certification
• Green building verification
• Blower door testing

Headquarters

HQ city

Fort Worth

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Energy Inspection and Testing Services: Third-party energy code inspections, testing services (blower door, duct blower), and compliance verification for residential and commercial construction. Services are performed at various construction phases (pre-drywall, final) to ensure code compliance.
2. HERS Rating Services: Home Energy Rating System (HERS) Index certification services. The HERS Index is the industry standard for measuring a home's energy efficiency and serves as a prerequisite for many green building programs.
3. Green Building Verification Services: Verification services for above-code green building programs including ENERGY STAR, DOE Zero Energy Ready Home, NGBS Certification, Green Built Texas, and other local/national programs.
4. 45L Tax Credit Certification: Eligible certifier for the 45L Energy Efficient Home Tax Credit, helping homebuilders qualify for $2,500-$5,000 federal tax credits per energy-efficient home.
5. Green Building Consulting and Training: Energy efficiency consulting and training services for builders, homeowners, utility companies, government agencies, and commercial facilities.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Fox Energy Specialists is an independent third-party energy code inspection, testing, and HERS rating service provider for residential, multi-family, and commercial construction projects across Texas. Services include energy modeling and plan review, blower door and duct blower testing, COMcheck analysis, IRC county inspections, and verification for above-code green building programs (ENERGY STAR, DOE Zero Energy Ready Home, NGBS, Green Built Texas), as well as HERS H2O water efficiency ratings, 45L Tax Credit certification, and the proprietary FitHome two-year whole-home energy usage guarantee.

Product overview

Fox Energy Specialists provides independent third-party energy efficiency inspections, testing, and ratings as a division of The Nelrod Company. The company's service offering is organized around three core segments: Single-Family Services (including Energy Modeling, Energy Code Inspections & Testing, Green Building Verification, HERS H2O Water Efficiency Ratings, IRC County Inspections, and certifications including ENERGY STAR, DOE Zero Energy Ready Home, and FitHome Energy Guarantee); Multi-Family Services (including Energy Modeling, Energy Code Inspections & Testing, and Green Building Verification for larger-scale residential developments); and Commercial Energy Code Services (including COMcheck Analysis and commercial energy code inspections). The company also offers 45L Tax Credit Certification services for builders seeking federal tax credits for energy-efficient homes. Services are delivered through four Texas locations (Fort Worth/Corporate, Austin, Houston, and San Antonio).

Differentiator

Problem solved

Functional benefit

Brands

• FitHome Energy Guarantee®: A two-year, whole-home energy usage guarantee program administered by Fox Energy Specialists for homebuilders.
• Fox Energy Specialists, a Division of The Nelrod Company

Products and services

• Single-Family Energy Rating Services Comprehensive energy efficiency inspection, testing, and HERS rating services for production and custom single-family homebuilders, including plan review, code compliance inspections, and green building certifications across Texas.
• Multi-Family Energy Rating Services Energy modeling, energy code inspections/testing, and green building verification services for larger-scale multi-family residential developments in Texas.
• Commercial Energy Code Services Energy code inspections and testing services for new commercial construction, including COMcheck Analysis and rough/final phase IECC inspections across Texas.
• Energy Modeling / Plan Review Construction document review and analysis during the design stages to ensure timely approval and identify cost-effective alternatives for energy-efficient housing.
• Energy Code Inspections and Testing Third-party energy code inspections, duct blower testing, and blower door tests required for residential construction compliance under IECC standards.
• Green Building Verification Plan review, inspection, testing, and verification services for green building programs including Green Built Texas, NGBS, Austin Energy Green Building, Build San Antonio Green, and City of Dallas Green Building.
• HERS H2O Water Efficiency Rating Services Whole-house water efficiency rating system that includes both indoor and outdoor water uses, building on RESNET's nationally recognized HERS Index framework.
• IRC County Inspections Third-party phase inspections for production builders in unincorporated areas of Texas, including plumbing rough, frame and mechanical, and final building code inspections.
• ENERGY STAR Home Certification Certification program ensuring homes meet strict ENERGY STAR energy efficiency guidelines, resulting in lower energy consumption and reduced utility bills.
• DOE Zero Energy Ready Home Certification Highest level energy-efficiency certification from the U.S. Department of Energy for homes that can produce as much energy as they consume (net-zero energy homes), qualifying for federal tax credits.
• FitHome Energy Guarantee Two-year whole-home energy usage guarantee program administered by Fox Energy Specialists, with payment of the difference if the homebuyer's energy usage exceeds the guaranteed amount.
• 45L Tax Credit Certification Certification services for the federal 45L Energy Efficient Home Credit, offering $2,500-$5,000 in tax credits per energy-efficient single-family home and up to $5,000 per dwelling unit for multifamily projects.
• COMcheck Analysis Commercial energy model report completion for permitting, reviewed and approved by Certified Commercial Energy Code Plans Examiners.
• Green Building Consulting and Training Energy efficiency consulting and training services for builders, homeowners, utility companies, government agencies, and commercial facilities, supporting program implementation and workforce education.

Quantifiable outcome

• ENERGY STAR Certified Homes can save homeowners up to 30% on energy bills
• +1 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Eleven partnerships are on record, tiered core, major and minor.

• The Nelrod CompanycoreStrategic or Co-development PartnerParent company of Fox Energy Specialists. Fox Energy Specialists is a Division of The Nelrod Company, which has provided energy audit services since 1985 for the affordable housing industry. Nelrod's experience in federal energy audit requirements (24 CFR 965.302) enabled Fox's expansion to the private sector in 2001.
• Builders Energy RatercoreStrategic or Co-development PartnerAcquired in September 2021. Builders Energy Rater was a leading provider of energy code certifications and home energy ratings for the single-family residential market in San Antonio, Austin, and Texas Hill Country regions. Nationally recognized by EPA for ENERGY STAR for Homes market leadership. Acquisition strengthens Fox's network in one of the fastest growing regions in the nation.
• Residential Energy Services Network (RESNET)coreStrategic or Co-development PartnerRESNET is the governing body for the Home Energy Rating System (HERS) Index. Fox Energy Specialists is a RESNET Accredited Home Energy Rating Provider. The HERS Index is the industry standard for measuring home energy efficiency and is a prerequisite for many green building programs.
• Environmental Protection Agency (EPA) - ENERGY STARcoreStrategic or Co-development PartnerLong-standing ENERGY STAR partner. Multiple awards including Partner of the Year (2009), Leadership in Housing Awards (2008, 2010-2013), and Market Leader Awards (2019-2021). ENERGY STAR for Homes certification is a key service offering.
• U.S. Department of Energy (DOE)coreStrategic or Co-development PartnerDOE Zero Energy Ready Home certification partner. Fox Energy Specialists provides turnkey certification services for DOE Zero Energy Ready Homes, which meet the highest energy efficiency standards and qualify for $5,000 tax credits per home.
• International Code Council (ICC)coreTechnology or IntegrationICC certified staff perform energy code inspections. ICC and HERS Certified Staff provide inspections, duct blower testing, blower door testing, and other energy performance tests in compliance with IECC standards.
• National Green Building Standard (NGBS)majorStrategic or Co-development PartnerProvides inspection, testing, and verification services for NGBS Certification for multi-family housing through the NGBS Green Certified program.
• Green Built TexasmajorStrategic or Co-development PartnerLocal green building program partner for Texas. Provides plan review, inspection, testing, and verification services for Green Built Texas certification.
• City of Dallas Green Building ProgramminorStrategic or Co-development PartnerLocal green building program partnership for Dallas area. Provides green building verification services for builders participating in the City of Dallas Green Building program.
• Austin Energy Green BuildingminorStrategic or Co-development PartnerLocal green building program partnership for Austin area. Provides verification services for Austin Energy Green Building program requirements.
• Build San Antonio GreenminorStrategic or Co-development PartnerLocal green building program partnership for San Antonio area. Provides green building verification services for Build San Antonio Green certified homes.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• EnergyLogic: Colorado-based HERS rating provider offering residential energy ratings, energy code inspections, and green building verification. Highly comparable business model and service mix to Fox Energy Specialists in a different regional market.
• MaGrann Associates: New Jersey-based residential energy ratings and HERS Index provider serving production builders. Similar service portfolio (HERS ratings, code inspections, ENERGY STAR verification) and target customer base of production homebuilders.
• Performance Systems Development: Residential energy consulting firm offering HERS ratings, energy modeling, and code compliance services to builders and program administrators. Directly comparable in service offering and customer type.

Broad incumbents

• Willdan Energy Solutions: Energy engineering and consulting firm providing energy audits, program design, and implementation services to utilities and government agencies. Broader portfolio than Fox but overlapping residential energy services.
• ICF International: Global consulting firm with a sizable energy practice serving utilities and government agencies on energy efficiency, building codes, and program implementation. Adjacent to Fox's services but operating at vastly larger scale and scope.
• Resource Innovations: Energy consulting and program implementation firm providing residential and commercial energy efficiency services, including program design, evaluation, and verification. Comparable service mix to Fox at broader geographic scale.
• Franklin Energy: National energy efficiency services firm delivering program implementation, weatherization, and verification services for utilities and government programs. Comparable services in residential energy efficiency at much broader scale.
• TRC Companies: Environmental and infrastructure consulting firm offering energy efficiency, building performance, and sustainability services. Overlaps with Fox on building energy services but within a much broader portfolio.
• CLEAResult: Large-scale energy efficiency services provider working with utilities and program administrators on residential and commercial efficiency programs. Overlaps with Fox on residential program verification but at much larger scale across broader geographies.

Regional players

• Southface Energy Institute: Atlanta-based nonprofit providing residential energy ratings, green building consulting, and certification services primarily in the Southeast. Comparable HERS rating and consulting offerings but focused on a different US region.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• Xx.com/foxenergy
• Facebookfacebook.com/FoxEnergySpecialists
• LinkedInlinkedin.com/company/fox-energy-specialists

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Fox Energy Specialists