/Companies

PermitFlow

YC W22

New York City, US · Founded 2021 · 80 employees · Hiring · 16 known investors

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PermitFlow provides an AI-powered platform that automates the construction permitting lifecycle, from research and application preparation to submission and tracking. The platform serves contractors, developers, and home service companies seeking to accelerate pre-construction and project timelines.

Also known as PermitFlow, Inc.

AI & Machine LearningConstruction TechPropTechGovTechConstructionAIUnited States of AmericaAmerica / CanadaPartly Remote

Founders & leadership· Y Combinator alumni (W22)

PermitFlow was founded in 2021 by Samuel Lam and Francis Thumpasery.

SLSamuel Lam
Samuel LamCo-Founder & CTOSamuel Lam worked as a software engineer at Uber Eats building workflow tools for reporting and payments, and previously co-founded NXTFactor, an online marketing agency. He holds a degree in Computer Science and Statistics from Harvard.30 Under 30 2025
FTFrancis Thumpasery
Francis ThumpaseryCo-Founder and CEOHe previously worked in private equity and public markets investing at Advent International and an activist hedge fund, and began his career at McKinsey & Company as a business analyst and later senior business analyst. Earlier roles included co-founding mBulance and stints in product management at Fitbit and international sales at Broad Air.
AL
Ann LeeChief of Staff
DI
Dean ItaniHead of Business Operation and Finance
AM
Aaron MullenixRecruiter
MJ
Matthew JordanDirector of Ops
SL
Sam LamCTO
AM
Anissa MansourRecruiter
CW
Chad WaiteHead of Growthformer
TA
Ty Avery-MillerRecruiterformer
HH
Hannah HilerRecruiterformer
MT
Mark TallabasRecruiterformer

Investors · 16

Kleiner Perkinslisted by Kleiner PerkinsMenlo Park · $500K – $15M

How we know: Kleiner Perkins's portfolio page · a partner's Signal profile · funding news · techcrunch.com · Y Combinator's founder network · Not right? Tell us

Aspect VenturesreportedPalo Alto

How we know: Y Combinator's founder network · Not right? Tell us

Global Founders CapitalreportedBerlin · $1M

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

$85M disclosed across 2 of 6 rounds · 2024–2026

Source: company announcements and press reports — follow each round's link for the claim.

Company profile

researched Aug 2026

PermitFlow is a New York City-based software company that automates pre-construction workflows for the U.S. construction industry, with construction permitting as its core product. The platform is organized around a set of AI agents that cover the permitting lifecycle: an Intake Agent that pulls project data from a customer's CRM, files and contracts; a Research Agent that queries PermitFlow's permit database and authority-having-jurisdiction (AHJ) portals to confirm requirements, fees and timelines; a Submission Agent that completes forms, attaches documents and files directly with the AHJ; a Coordination Agent that tracks AHJ updates and comments and follows up with stakeholders; and an Issuance/Closeout Agent that returns issued permits into PermitFlow and the customer's CRM and tracks inspections and close-out tasks.

Beyond permitting, the product line includes modules for inspections and closeouts and for license and registration management, with additional agents described as in development. The company also publishes jurisdiction-level resources (municipal guides, state-by-state permitting content, licensing guides) and says it is rolling out a national permitting visibility dashboard intended to show how permitting operates in communities across the country, alongside support for municipalities modernizing their processes.

As of the sources reviewed, PermitFlow reports having permitted more than $20 billion in construction value, coverage of more than 7,000 AHJs, and a proprietary dataset of over 12 million permitting data points on requirements, comments and approval decisions. It states SOC 2 compliance and ISO 27001 certification.

Founding story

PermitFlow was founded in 2021 by Francis Thumpasery (Co-Founder & CEO) and Samuel Lam (Co-Founder & CTO), who say they encountered the delays, complexity and inefficiency of construction permitting firsthand. Working with contractors, developers and local AHJs, the founders observed that fragmented systems and manual workflows added overhead and slowed projects before construction began, making pre-construction expensive and unpredictable and creating a bottleneck for housing, infrastructure, commercial development and home services. Lam previously built workflow tooling for reporting and payments at Uber Eats, co-founded the online marketing agency NXTFactor, and studied computer science and statistics at Harvard.

Business model

Subscription software platform, per the CEO's description of the business model. Customers subscribe to a suite of AI agent modules covering permitting, inspections and closeouts, and license and registration management.

Recurring subscription revenue from software modules; the company reported 10x revenue growth between its Series A and its March 2026 Series B. Specific pricing is not disclosed in the sources.

Traction

PermitFlow reports powering more than $20 billion in construction value nationwide since launching in 2021, coverage of 7,000+ AHJs, and a dataset exceeding 12 million permitting data points. It cites 10x revenue growth since its Series A and customer relationships with Amazon, Lennar, Service Experts, IKEA, Toll Brothers and Dick's Sporting Goods. Team size is listed at 80 on its Y Combinator profile.

Latest developments

March 13, 2026: announcement of a $54 million Series B led by Accel with Kleiner Perkins, Felicis, Initialized Capital, Altos Ventures, Y Combinator and other existing investors, taking total funding to $90.5 million; the company says proceeds will fund product development and hiring. Recent product work includes AI agents for inspections and license management and a planned national permitting visibility dashboard aimed at municipalities. The company also announced SOC 2 compliance.

▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies

Market position

The company positions itself as the leading AI pre-construction/permitting platform for the construction industry and describes its addressable market as the $1.6 trillion U.S. construction industry. Press coverage frames the product against permitting delays reported by 77% of developers and approval timelines as long as 33 months in some cities. Independent market share data is not available in the sources.

The company attributes its differentiation to the combination of domain knowledge in construction and technical depth, and to what it describes as the largest permitting dataset (12M+ data points across 7K+ AHJs) powering its agents. It claims end-to-end automation of the permitting lifecycle rather than point tooling, with results including 2.5x faster approvals, up to 60% shorter review cycles, 90% lower administrative workload and 5x ROI. These figures are company-reported and not independently verified in the sources.

Technology

AI agents built on top of a proprietary permitting dataset of more than 12 million data points covering requirements, comments and approval decisions across more than 7,000 AHJs. Agents search AHJ portals and the internal permit database, generate and file applications directly with jurisdictions, monitor status and comments, and integrate with customer CRMs and file/contract repositories. The company states enterprise security posture including SOC 2 compliance and ISO 27001 certification.

Go-to-market

Direct enterprise sales, with demo requests as the primary website conversion path and open roles for business development representatives, enterprise account executives and an enterprise sales manager based in New York City and remote across the U.S. The company also runs a content marketing program of municipal permitting guides, state-level resources, licensing guides and permit-basics articles, and lists a partnerships channel.

General contractors and commercial contractors, home builders, home services contractors (including HVAC and roofing companies), real estate developers, subcontractors, architects and engineers, permit expediters and project sponsors. Named customers cited by the company and press include Amazon, Lennar, Service Experts, IKEA, Toll Brothers and Dick's Sporting Goods.

Geography

United States only, operating nationwide across more than 7,000 authorities having jurisdiction and marketing state-by-state and municipality-level permitting coverage. Headquarters and office are in New York City, with remote roles across the U.S.

History

Founded in 2021, PermitFlow went through Y Combinator's Winter 2022 batch, where Harj Taggar was its primary partner. A TechCrunch item dated February 21, 2024, linked from the company's YC profile, reports a $31M raise to build a "TurboTax for construction permitting." In the period after that round the company reports 10x revenue growth and the launch of additional AI agents for inspections and license management. On March 13, 2026 PermitFlow announced a $54 million Series B led by Accel, bringing total capital raised to $90.5 million. The company also announced achieving SOC 2 compliance.

Risks & controversies

No controversies, litigation or negative events appear in the reviewed sources. Notable evidentiary limitations: most performance claims (2.5x faster approvals, 5x ROI, 90% workload reduction, 60% timeline reduction, 10x revenue growth) originate from PermitFlow's own materials or founder interviews; customer testimonials are anonymized by first name and title; and the business depends on integrating with thousands of heterogeneous municipal permitting systems and on the pace of public-sector permitting reform.

Compiled by commissioned research from 8 cited public sources — announcements, filings, and press listed under research sources below.

Key figures

latest reported
Administrative workload reductionJan 202690%
Authorities having jurisdiction (AHJs) coveredJan 20267,000 AHJs
Construction value permittedJan 2026$20B
Customer ROIJan 20265 x
Employee countJan 202680 people
Permit approval speedJan 20262.5 x
Permitting data pointsJan 202612,000,000 data points
Revenue growth since Series AMar 202610x revenue growth since the Series A round
Target market sizeDec 2025$1.6T
Total funding raisedMar 2026$90.5M

Company-reported or press-reported figures, each dated to when it was claimed — not independently audited.

Related companies · 9

AccelaAccela provides cloud-based software and IT management solutions for government agencies and communities to deliver digital services, streamline operations, and improve resident engagement. The platform serves modern local and regional governments seeking to offer efficient, transparent online service delivery.
PermitifyPermitify reviews architectural and engineering plans against city ordinances, building codes, and project requirements to identify likely code violations or missing items before official municipal review. The service targets architectural and engineering teams seeking to reduce permitting delays and revision cycles.
UpCodesUpCodes provides a searchable database of building codes across U.S. jurisdictions to architects, engineers, and construction professionals, using natural language processing to connect regulations with product specifications. The platform also helps building product manufacturers display code-compliant products to design professionals during the specification phase.
Permits.comPermits.com was a construction-permit technology platform and national permit-expediter service operated by FIELDVINE, INC.
Stairs FinancialStairs Financial operates a home search platform for first-time homebuyers that matches properties to individual financial situations and facilitates access to public funding programs including grants, loans, and tax incentives.
ArchiLabsArchiLabs is a browser-native BIM and design workspace that combines AI-assisted modeling, Python automation, and validation for complex building systems like MEP, modular housing, and critical facilities. The platform enables teams to automate design workflows, generate documentation, and configure products with deterministic results and full audit trails.
NextRequestCivicPlus develops a cloud-based platform for local government agencies to modernize operations, improve resident engagement, and streamline internal workflows. The company serves city and county departments, helping them deliver services more effectively with limited resources.
InspectMind AIInspectMind AI is an AI-powered plan checker that reviews construction drawings, specifications, and building codes to identify coordination conflicts, code violations, and specification mismatches before permit submission or field construction. The platform serves general contractors, architects, engineers, plan reviewers, and building owners for QA/QC during design phases.
ServicetitanServiceTitan provides software for private equity firms and their portfolio companies in the trades industry, offering centralized multi-entity management, standardized operations, and consolidated reporting. The platform includes AI-driven analytics for identifying growth opportunities and a marketplace of integrations for productivity and customer experience.

Companies working in the same space as PermitFlow.

Timeline · 6

launches, deals, and filings
Mar 2026
PermitFlow raises $54M Series B led by Accel

PermitFlow announced a $54 million Series B round led by Accel with participation from Kleiner Perkins, Felicis, Initialized Capital, Altos Ventures, Y Combinator and other existing investors, bringing total capital raised to $90.5M. Proceeds are earmarked for product development and team expansion.

$54M source ↗

Mar 2026
New AI agents for inspections and license management

Since its Series A, PermitFlow reported launching new AI agents for Inspections, License Management, and other workflows, alongside its permitting agents (Intake, Research, Submission, Coordination, Issuance).

source ↗

Jan 2026
National permitting visibility dashboard rollout

PermitFlow states it is rolling out a national permitting visibility dashboard showing how permitting works in communities across the United States, paired with support for municipalities modernizing their processes.

source ↗

Jan 2026
SOC 2 compliance achieved

Company news post announces PermitFlow is officially SOC 2 compliant; the website also cites ISO 27001 certification.

source ↗

Feb 2024
PermitFlow raises $31M Series A

A TechCrunch article dated Feb 21, 2024 linked from PermitFlow's Y Combinator profile reports the YC alum raised $31M to build the 'TurboTax for construction permitting'.

$31M source ↗

Jan 2022
Participated in Y Combinator Winter 2022 batch

PermitFlow is listed as a Y Combinator Winter 2022 batch company, with Harj Taggar as primary partner.

source ↗

Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.

Legal entities · 1

corporate structure
PermitFlow Inc.

In the news

▸Research sources · 8

primary sources listed

8 public sources were cited for this profile; the first-party ones are listed here.

Frequently asked questions

What does PermitFlow do?
PermitFlow sells an AI-agent platform that automates construction permitting, from AHJ research to submission, tracking and closeout.
Who founded PermitFlow?
PermitFlow was founded by Samuel Lam, Francis Thumpasery in 2021.
Who are PermitFlow's investors?
PermitFlow's investors include 1Sharpe Ventures, Accel, Amino Capital, avra, Depth Ventures, Felicis Ventures, Foundamental, Initialized Capital and 8 more.
How much funding has PermitFlow raised?
PermitFlow has disclosed $85M raised across 2 of its 6 known rounds.
Where is PermitFlow headquartered?
PermitFlow is headquartered in New York City, US.