EHT Traceries

What EHT Traceries does

EHT Traceries, Inc. is a Washington, DC-based, certified woman-owned historic preservation consulting firm founded in 1989 by Emily Hotaling Eig. The firm operates as a B2B professional services boutique providing five interconnected service lines: Preservation Planning, Historic Tax Credits, Technical Preservation Services, Survey & Documentation, and Environmental Sustainability & Resilience. Its work centers on applying the Secretary of the Interior's Standards for the Treatment of Historic Properties and national criteria for evaluating historic significance and integrity, with all professional staff meeting the 36 CFR 61 qualification standards. The firm serves federal agencies (GSA, NPS, Smithsonian, Federal Railroad Administration), state and local governments (Pennsylvania Historic and Museum Commission, DC government, New Orleans RTA), private developers (Apple, Sagamore Development, Flaherty and Collins, Euro Capital Properties), and institutional clients (Rice University, DC Public Library, National Parks Conservation Association).

The firm generates revenue through project-based, fee-for-service consulting engagements, typically bidding on RFPs, responding to competitive solicitations, or joining multi-discipline project teams assembled by prime architecture firms. Project scope spans Historic Preservation Certification Applications (Parts 1-3), National Register nominations, determinations of eligibility, Section 106/NEPA consultation, cultural landscape reports, and increasingly, sustainability retrofitting and flood mitigation guidance for historic properties. Geographic reach extends across 24+ US states and 5 international markets (Argentina, Czech Republic, Haiti, Italy, Paraguay), though project execution is anchored by the single DC office at 440 Massachusetts Avenue NW.

The firm's competitive positioning rests on its credentialed talent base, regulatory expertise, and 36-year track record documented through 50+ preservation awards from organizations including the American Institute of Architects, DC Preservation League, Maryland Historical Trust, and National Trust for Historic Preservation. It holds multiple certifications (WBE, DBE, MBE, SLBE, CBE) across DC, Maryland, Virginia, and the Metropolitan Washington Unified Certification Program, enabling set-aside and DBE-eligible federal contracting. As of July 2025, following the retirement of founding principal Laura Harris Hughes, four internal professionals were promoted to principal to support continuity under founder-CEO Emily Hotaling Eig and CFO Afshin Vettovaglia.

Name

EHT Traceries

Legal name

EHT Traceries, Inc.

Website

https://traceries.com

Company type

Private

Founded year

1989

Operating status

Operating

Headcount range

51–100 employees

Short description

EHT Traceries is a Washington, DC-based, woman-owned historic preservation consulting firm founded in 1989, providing preservation planning, historic tax credit certification, technical preservation services, survey and documentation, and environmental sustainability consulting to federal, state, and local governments, private developers, and institutions across the US and internationally.

Ownership category

akta.pro rank

Product category

Historic Preservation Consulting

NAICS

Testing Laboratories and Services (541380)

SIC

Services-Testing Laboratories (8734)

akta.pro primary industry

EHS Auditing, Inspections & Assurance (BPAHAJAG)

akta.pro secondary industry

Site Assessment & Remediation (Phase I/II, Cleanup Oversight) (BPAHAJAC)

Keywords

• Historic preservation consulting
• Historic tax credits
• Regulatory compliance consultation
• Architectural history services
• Cultural resource management

Headquarters

HQ city

Washington

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional Consulting Services: EHT Traceries generates revenue through professional consulting fees for historic preservation services including preservation planning, technical preservation services, historic tax credit certification, survey and documentation, and environmental sustainability planning. Revenue is earned through project-based consulting engagements with government agencies, private developers, property owners, and institutional clients. The firm operates on a fee-for-service model typical of professional consulting firms.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

EHT Traceries is a historic preservation consulting firm that provides expert technical guidance to public, private, and institutional clients on the documentation, evaluation, treatment, and long-term stewardship of historic resources. The firm manages the full lifecycle of preservation projects through five service lines covering preservation planning, historic tax credit certification, technical preservation services, survey and documentation, and environmental sustainability planning for historic buildings.

Product overview

EHT Traceries is a historical preservation consulting firm offering five interconnected service lines: Preservation Planning, Historic Tax Credits, Technical Preservation Services, Survey & Documentation, and Environmental Sustainability & Resilience. These services work together to provide comprehensive support for historic preservation projects—from initial research and documentation through regulatory compliance, tax credit certification, and sustainable building rehabilitation. The firm specializes in guiding clients through the complex process of historic resource treatment and long-term stewardship, coordinating regulatory compliance reviews at local, state, and federal levels.

Differentiator

Problem solved

Functional benefit

Products and services

• Preservation Planning Expert technical guidance to public, private, and institutional clients to develop and implement strategies for the treatment and long-term stewardship of historic resources. Includes master plans, agency review, entitlements, cultural resource management, design consultation, feasibility studies, and historic rehabilitation/adaptive use guidance.
• Historic Tax Credits Specialization in the completion and management of all components necessary to obtain Historic Preservation Certification to qualify for state and/or federal historic tax credits. Services include initial consultation, National Register Nominations, Historic Preservation Certification Application (Part 1, Part 2, and Part 3), construction monitoring, and cooperation with State Historic Preservation Offices and the National Park Service.
• Technical Preservation Services Building Preservation Plans, Building Assessments, and Window and Door Surveys and Assessments. Includes identification of character-defining features and physical materials, their conditions, and ways to safely and effectively restore each material without damaging their integrity. Also covers Design Guidelines, Historic Structures Reports, Preservation Strategies, GIS, Cultural Landscape Reports, and Sections 106, 110, 111, 4(f), and NEPA Consultation.
• Survey & Documentation Identification, cataloging, and documentation of historic and cultural resources using methodology that leads to accurate evaluation of significance and sound preservation recommendations. Includes Research and Documentation, Archaeological Phase 1A, Architectural Surveys, Determinations of Eligibility, Cultural Landscape Surveys, HABS/HAER/HALS, National Historic Landmarks, Historic Districts, Historic Context Reports, Historic Resource Inventories, Interiors Studies, and Landmark Applications & National Register Nominations.
• Environmental Sustainability & Resilience Guidance, best practices, and recommendations for the sensitive retrofitting and rehabilitation of historic buildings to improve energy performance and reduce contribution to climate change while preserving inherently sustainable design features, historic characteristics, and significance. Includes sustainability studies, flood mitigation plans, hazard mitigation plans, sustainability enhancements for historic properties, and solar applications and permits.

Quantifiable outcome

• Thousands of resources covered by National Register nominations and determinations of eligibility authored by staff
• +1 more outcomes

Named customers18 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

Feature5 records

Partnerships

42 partnerships are on record, tiered minor and core.

• PN HoffmanminorStrategic or Co-development PartnerPN Hoffman engaged EHT Traceries for the DC Fish Market project to prepare a Historic Preservation Plan and floodproofing recommendations for the Lunch Room and Oyster Shucking Shed buildings as part of The Wharf redevelopment project.
• StudioMBminorStrategic or Co-development PartnerStudioMB collaborated with EHT Traceries on the DC Fish Market project as part of the architectural design team for The Wharf redevelopment.
• Hickok Cole ArchitectsminorStrategic or Co-development PartnerHickok Cole Architects worked with EHT Traceries on the Sustainability Guide for Existing and Historic Properties project for the DC Department of Energy and Environment.
• Simpson Gumpertz & HegerminorImplementation/ SI/ Consulting PartnerSimpson Gumpertz & Heger provided technical expertise as part of the team developing the Sustainability Guide for Existing and Historic Properties.
• Department of Energy & Environment (DC)minorImplementation/ SI/ Consulting PartnerDC Department of Energy & Environment engaged EHT Traceries to prepare the Sustainability Guide for Existing and Historic Properties, with regular review and input from the department.
• Department of Consumer and Regulatory Affairs (DC)minorImplementation/ SI/ Consulting PartnerDC Department of Consumer and Regulatory Affairs provided review and input on the Sustainability Guide for Existing and Historic Properties project.
• DC Office of Planning, Historic Preservation OfficeminorImplementation/ SI/ Consulting PartnerDC Office of Planning Historic Preservation Office provided review and input on the Sustainability Guide and adopted the guide in early 2019.
• Vision Planning and ConsultingminorStrategic or Co-development PartnerVision Planning and Consulting partnered with EHT Traceries on the Disaster Planning for Historic Properties Initiative for four Pennsylvania counties following Tropical Storm Lee and Hurricane Sandy.
• Pennsylvania Historic and Museum Commission (PHMC)minorImplementation/ SI/ Consulting PartnerPennsylvania Historic and Museum Commission engaged EHT Traceries and Vision Planning and Consulting for the Disaster Planning for Historic Properties Initiative.
• Apple, Inc.coreStrategic or Co-development PartnerApple, Inc. retained EHT Traceries as historic preservation consultants for the Carnegie Library rehabilitation project for their flagship retail store, navigating the complex DC entitlements process.
• Beyer Blinder BelleminorImplementation/ SI/ Consulting PartnerBeyer Blinder Belle served as architects on the Carnegie Library rehabilitation project with EHT Traceries providing historic preservation consultation.
• Foster and PartnersminorImplementation/ SI/ Consulting PartnerFoster and Partners served as architects on the Carnegie Library rehabilitation project with EHT Traceries providing historic preservation consultation.
• Flaherty and Collins PropertiesminorStrategic or Co-development PartnerFlaherty and Collins Properties engaged EHT Traceries for the St. Elizabeths Hospital CT Campus conversion to affordable housing, requiring Historic Preservation Certification Application.
• Schmidt Keg House, LLCminorStrategic or Co-development PartnerSchmidt Keg House, LLC engaged EHT Traceries for the Jacob Schmidt Brewing Company Keg House historic tax credit certification and rehabilitation project.
• ACE Theatrical Group, LLCminorStrategic or Co-development PartnerACE Theatrical Group, LLC retained EHT Traceries for the Loew's Kings Theatre National Register Nomination and Historic Preservation Certification Application.
• Martinez+JohnsonminorImplementation/ SI/ Consulting PartnerMartinez+Johnson served as architects on the Loew's Kings Theatre project with EHT Traceries providing historic preservation consultation.
• Sagamore DevelopmentminorStrategic or Co-development PartnerSagamore Development engaged EHT Traceries for the Fells Point Recreation Pier conversion to boutique hotel using historic tax credits.
• Metropolitan Partnership, Ltd.minorStrategic or Co-development PartnerMetropolitan Partnership, Ltd. engaged EHT Traceries for the 10 Light Street (Baltimore Trust Company Building) historic tax credit certification and rehabilitation.
• Euro Capital Properties, LLCminorStrategic or Co-development PartnerEuro Capital Properties, LLC engaged EHT Traceries for the Watergate Hotel rehabilitation and Federal Historic Preservation Tax Certification Application.
• DC Public LibrarycoreStrategic or Co-development PartnerDC Public Library retained EHT Traceries as historic preservation consultants for the Martin Luther King, Jr. Memorial Library rehabilitation, guiding the project through complex design review and regulatory processes.
• Martinez+Johnson and MecanoominorImplementation/ SI/ Consulting PartnerMartinez+Johnson and Mecanoo served as architects on the MLK Library rehabilitation project with EHT Traceries providing historic preservation consultation.
• Rice UniversitycoreStrategic or Co-development PartnerRice University engaged EHT Traceries through KieranTimberlake to inform treatment options for Lovett Hall rehabilitation, examining and reevaluating the building's significance and integrity.
• KieranTimberlakeminorImplementation/ SI/ Consulting PartnerKieranTimberlake served as university master planners on the Rice University Lovett Hall project with EHT Traceries providing preservation consulting.
• Smithsonian InstitutioncoreStrategic or Co-development PartnerSmithsonian Institution retained EHT Traceries to provide historic preservation consulting services for the South Mall Campus Master Plan, including Section 106 consultation and materials for Commission of Fine Arts and National Capital Planning Commission.
• CSX TransportationminorStrategic or Co-development PartnerCSX Transportation engaged EHT Traceries for the Long Bridge Project EIS preparation and Section 106 consultation process.
• Federal Railroad AdministrationminorImplementation/ SI/ Consulting PartnerFederal Railroad Administration engaged EHT Traceries for the Long Bridge Project Environmental Impact Statement preparation and Section 106 consultation.
• General Services Administration (GSA)coreImplementation/ SI/ Consulting PartnerGSA engaged EHT Traceries for the Capital Solar Challenge project, coordinating agency reviews for solar installations on federal buildings.
• Commission of Fine ArtsminorImplementation/ SI/ Consulting PartnerCommission of Fine Arts reviewed solar array proposals as part of the Capital Solar Challenge initiative coordinated by EHT Traceries.
• National Capital Planning CommissionminorImplementation/ SI/ Consulting PartnerNational Capital Planning Commission reviewed solar array proposals as part of the Capital Solar Challenge initiative coordinated by EHT Traceries.
• Penza-Bailey ArchitectsminorImplementation/ SI/ Consulting PartnerPenza-Bailey Architects contracted EHT Traceries for the Baltimore Correctional Complex Determinations of Eligibility as part of Section 106 review.
• Maryland Historical Trust (MHT)minorImplementation/ SI/ Consulting PartnerMaryland Historical Trust coordinated with EHT Traceries on the Baltimore Correctional Complex Section 106 review process.
• National Park ServicecoreStrategic or Co-development PartnerNational Park Service engaged EHT Traceries for the Rock Creek & Potomac Parkway Cultural Landscape Report as part of cooperation with the Kennedy Center expansion.
• Stantec landscape architectsminorImplementation/ SI/ Consulting PartnerStantec landscape architects collaborated with EHT Traceries on the Rock Creek & Potomac Parkway Cultural Landscape Report.
• City of Mount RainierminorStrategic or Co-development PartnerCity of Mount Rainier retained EHT Traceries as lead historic preservation consultant for the Architectural Conservation Overlay Zone and Design Guidelines.
• Maryland-National Capital Park and Planning CommissionminorImplementation/ SI/ Consulting PartnerMaryland-National Capital Park and Planning Commission collaborated with EHT Traceries on the Mount Rainier Historic District survey and design guidelines.
• New Orleans Regional Transit AuthorityminorStrategic or Co-development PartnerNew Orleans Regional Transit Authority retained EHT Traceries to research, write, and present a National Historic Landmark Nomination for the St. Charles Streetcar Line.
• National Parks Conservation AssociationminorStrategic or Co-development PartnerNational Parks Conservation Association engaged EHT Traceries to craft a historic context for potential Rosenwald National Historical Park, working with the Rosenwald Park Campaign and fourteen State Historic Preservation Offices.
• Rosenwald Park CampaignminorStrategic or Co-development PartnerRosenwald Park Campaign collaborated with EHT Traceries on the historic context study for potential Rosenwald National Historical Park.
• District of Columbia Department of Parks and Recreation (DPR)coreStrategic or Co-development PartnerDC Department of Parks and Recreation engaged EHT Traceries for historic preservation and archaeological services for the Play DC initiative at ten District-owned play spaces.
• DC Department of General Services (DGS)minorImplementation/ SI/ Consulting PartnerDC Department of General Services partnered with DPR on the Play DC initiative, with EHT Traceries providing historic preservation consultation.
• Stantec Consulting Services Inc.minorImplementation/ SI/ Consulting PartnerStantec (formerly Greenhorne & O'Mara) partnered with EHT Traceries providing historic preservation and archaeological services for the Play DC initiative since 2013.
• Prospect Street Citizens AssociationminorStrategic or Co-development PartnerProspect Street Citizens Association retained EHT Traceries to prepare the Georgetown Car Barn landmark nomination for National Register of Historic Places.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Stantec: Global engineering firm with significant preservation and cultural resources practice; an existing EHT partner on Play DC, intends to compete directly on federal infrastructure Section 106 and historic preservation work at much larger scale.
• HDR Inc. Global engineering and design firm with cultural resources and historic preservation practice; competes for similar transportation, infrastructure, and federal-facility preservation consulting work that EHT delivers.
• Simpson Gumpertz & Heger: Structural and building envelope engineering firm with deep historic preservation expertise; an existing EHT partner on the Sustainability Guide for Existing and Historic Properties, competes for complementary technical preservation work on landmark buildings.
• Tetra Tech: Environmental engineering and consulting firm with cultural resources practice; competes for federal historic preservation and NEPA review work, particularly on transportation, energy, and water infrastructure projects requiring Section 106 consultation.
• Beyer Blinder Belle: Established NYC/DC preservation architecture firm with significantly larger scale than EHT; serves overlapping institutional clients (Smithsonian partnership notable) and frequently appears as architect on projects where EHT provides preservation consulting.
• ICF International: Global consulting firm with a substantial cultural resources and environmental compliance practice; competes with EHT on federal EIS preparation, Section 106 consulting, and disaster planning for historic resources (e.g., post-disaster historic property work).

Direct peers

• Bruner/Cott & Associates: Boston-based preservation-focused architecture firm with parallel service offering in adaptive reuse, historic rehabilitation design, and preservation planning; serves a similar mix of institutional, governmental, and private developer clients.
• Wiss, Janney, Elstner Associates: Largest preservation engineering and consulting firm in the US; offers building assessments, structural analysis, and materials conservation services that directly overlap with EHT's Technical Preservation Services and Survey & Documentation lines, but at much greater scale.
• Architectural Resources Group: California-based preservation architecture and planning firm with comparable full-service scope across preservation planning, National Register nominations, Historic Tax Credit certification, and Section 106 consultation. Comparable scale and federal/state client mix to EHT Traceries.
• Page & Turnbull: San Francisco preservation architecture firm offering adaptive reuse design, Section 106 review, and historic preservation consulting; closely comparable in service mix to EHT Traceries with similar specialty boutique positioning.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

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Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

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 EHT Traceries