Compyle
Compyle is an AI platform for environmental due diligence. It automates the production work behind a Phase I ESA, collecting the records the ASTM standard requires, surfacing findings and drafting report sections in your own firm's template and voice.
What is Compyle?
Compyle is a deliberately single-purpose platform: it exists to produce one document, the Phase I Environmental Site Assessment, and it has been built around ASTM E1527-21 from day one. Published by SmartAppetite Corporation, a Delaware company, it addresses environmental consulting firms and the Environmental Professionals who sign their reports. A Phase I ESA is the environmental review that precedes a property transaction, concluding on Recognized Environmental Conditions, historical RECs and de minimis conditions. Compyle automates the production work behind it, from first record to final draft, and leaves the judgement where it belongs.
The pitch rests on three claims the site makes plainly. First, data: record packages arrive the same day, with no order placed at EDR or ERIS and no three to ten day wait, at what the company calls a fraction of the cost. Second, traceability: every finding is linked to the record it came from. Third, format: drafts land in your firm's report template and voice, not the vendor's.
In practice the platform gathers historical aerial photography from USGS and NETR, Sanborn fire insurance maps from the Library of Congress, city directories from Ancestry and local archives, USGS topographic quadrangles, and regulatory database records across all ASTM lists. It analyses each source and surfaces the conditions it finds. The worked example on the homepage, a property in Portland, Maine, returns eight conditions drawn from twelve aerials, four Sanborn sheets, eight directory volumes, seven quadrangles and twenty-three regulatory records. Report sections are then drafted from that material, each assertion carrying its archive reference and retrieval date.
Auditability is the central argument, presented under the heading No hallucinations. No black boxes. The page claims 100% of claims sourced, zero unverified claims and a one to one source-to-claim ratio, with all regulatory records kept in a versioned, auditable file. The Environmental Professional keeps control throughout, commenting, suggesting edits and approving section by section, and nothing ships without that sign-off. Compyle is a web product reached by signing in at app.compyle.ai; its underlying AI comes from two named third parties, Anthropic and Google Cloud AI.
What it does
- Collect every record the ASTM standard requires for a property, automatically and on the same day
- Pull historical aerial photography, Sanborn fire insurance maps, city directories, USGS topographic quadrangles and federal, state and tribal regulatory records
- Analyse each source and surface site conditions, classified as REC, HREC or de minimis
- Draft Phase I report sections in your firm's own report template and voice
- Link every claim back to the source document it came from, with archive reference and retrieval date
- Let the Environmental Professional comment, suggest edits and approve the draft section by section in a report editor
- Keep all regulatory records in a versioned, auditable file
When to use Compyle / When not to
A quick filter to help you decide if Compyle is the right fit.
When to use Compyle
- Environmental consulting firms that want to take on more Phase I ESAs without adding headcount
- Environmental Professionals who sign Phase I reports and would rather review a draft than face a blank page
- Senior project managers and Phase I leads responsible for QC and peer review across a pipeline of assessments
- Principals and owners of consultancies running anywhere from under five to more than forty Phase I assessments a month
- Operations staff who order historical records and regulatory database packages and want them the same day
When not to use Compyle
- Anyone working outside the United States: the data corpus and the ASTM E1527-21 standard are both American
- Individuals or small buyers who want to sign up and try the tool themselves, since there is no self-serve purchase and no published price
- Teams looking for anything other than a Phase I ESA, as the platform covers that single deliverable
- Organisations whose use would fall under HIPAA or FISMA, which the terms of service explicitly exclude
- Developers after an API or a mobile app: neither is documented nor offered
How to use Compyle
A typical end-to-end flow, from setup to results.
- Request a demo from the site, which is the only way in: there is no open sign-up
- Fill in the form with your website, full name, work email, company, role and the number of Phase I assessments your firm runs each month
- Wait for the reply, which the site promises within a few hours with proposed time slots
- Take the 30-minute demo, bringing a property address from a recent project so it can be processed live
- Contract the access, which is granted through a separate written agreement such as an order form, a pilot agreement or a master services agreement
- Sign in at app.compyle.ai
- Open an assessment on a property address
- Let the automatic collection gather the aerials, Sanborn maps, city directories, topographic quadrangles and regulatory records
- Review the conditions that come back, classified as REC, HREC or de minimis, and follow each one to its sources
- Work through the draft in the report editor: comment, suggest edits, approve section by section, then sign
Pros & Cons
Pros
- Same-day record packages, against the three to ten days the site attributes to ordering from EDR or ERIS
- Every claim tied to its source document, with archive reference and retrieval date
- Drafts produced in your firm's own report template and voice rather than the vendor's
- The Environmental Professional keeps control, with comments, suggested edits and section-by-section approval, and nothing shipping without sign-off
- Built around a specific, dated standard, ASTM E1527-21, rather than a vague use case
- Designed to fit the QC and peer review a firm already runs, not to replace them
- Founding team previously built AI compliance review systems at scale at Hadrius, and the company carries a Y Combinator backing badge
Cons
- No public pricing and no published plans, so you cannot position yourself before a sales conversation
- No self-serve purchase through the site, and neither a free plan nor a free trial is announced
- A single deliverable and a single market: Phase I ESAs, an American data corpus and an American standard
- No mention of the GDPR anywhere, no data processing agreement and no published subprocessor list
- No API documentation, no mobile application and no detailed features page
- A very small site, three indexed URLs, where most product claims rest on interface screenshots rather than documentation
- A young company: the domain was registered on 04/10/2025 and first archived on 09/10/2025
Pricing & Plans
Compyle publishes no pricing. There is no pricing page, the sitemap listing three URLs in total, and the terms of service state that access to the platform is provided under separate written agreements with your organisation, such as order forms, pilot agreements or master services agreements, and that no self-serve purchase is offered through the site. Neither a free plan nor a free trial is announced. The only indication of cost anywhere is qualitative: record packages are said to cost a fraction of what EDR or ERIS charge, with no figure given. Pricing is therefore obtained only by contacting the company, in practice by requesting a demo.
Data, GDPR & hosting
A consolidated view of how Compyle handles your data.
GDPR overview
There is no GDPR implementation to report: neither "GDPR" nor "General Data Protection" appears anywhere on the site. The framework in place is entirely American. Section 9 of the privacy policy sets out U.S. state privacy rights and names California, Colorado, Connecticut, Texas and Virginia, and the site honours the Global Privacy Control signal, another U.S. mechanism. Section 10 states that the services are operated from the United States and that collected information is processed and stored there. No Article 27 EU representative is designated, no data protection officer is named, no data processing agreement is published or offered, no subprocessor list exists and no standard contractual clauses are mentioned. Rights are exercised by emailing founders@compyle.ai. A firm handling European personal data has nothing here to lean on.
Who owns the data?
SmartAppetite Corporation owns or licenses every intellectual property right in the platform: source code, databases, software, website design, text, images, graphics and trademarks. Users receive only a non-exclusive, non-transferable and revocable licence to access that material and to download or print portions of it for internal business purposes. Feedback works the other way round: any suggestion you send grants the company a perpetual, irrevocable, worldwide, royalty-free licence, without acknowledgement or payment. The deliverable itself is treated separately, the homepage stating that drafts land in your firm's template and that the final report is yours. The contract governing customer data sits in a separate written agreement that is not published.
Reuse rights
You may download or print any portion of the content you have properly gained access to, but only for your own internal business purposes. Anything further needs prior written permission: copying, reproducing, republishing, uploading, posting, publicly displaying, encoding, translating, transmitting, distributing, selling, licensing or otherwise exploiting the material commercially. The terms also forbid systematically retrieving content to build a collection, compilation, database or directory, using data mining tools, robots or scrapers, reaching the service by automated means other than standard search engine indexing, and using the service or its content to compete with the company. The Phase I report you produce is a different matter: it stays with your firm, in your firm's own template.
Data retention & training
Hosting summary
Everything runs in the United States. The privacy policy states that the services are operated from the United States and that collected information is processed and stored there, so any access from abroad involves a transfer into U.S. jurisdiction, and the terms repeat that the services are hosted in the United States. Two third-party AI providers are named, Anthropic and Google Cloud AI, and they process input, output and associated personal information on Compyle's behalf. Beyond those, the policy describes its vendors only by category: hosting and infrastructure, data storage, internal communications and notifications, and visitor identification. No region, data centre or country beyond the United States is published, no subprocessor list exists and no data processing agreement is offered. Fonts are loaded from Google Fonts, which therefore receives visitors' IP addresses, and the hosting provider handles standard server logs. Security is described as technical and organisational measures, with no guarantee of absolute security. A network lookup places the site's IP address in the United States on Amazon infrastructure, but that covers the marketing site, not necessarily the platform itself.
Where Compyle works
Country-level availability.
Available in
Things to keep in mind
Risks and trade-offs to weigh before adopting Compyle.
- The report carries your Environmental Professional's signature, not the vendor's: the terms disclaim all warranties and cap liability at the greater of USD 100 and twelve months of fees
- "No hallucinations" is a vendor claim rather than an independent audit, so checking the sources remains the reviewer's job
- A junior EP who never drafts from scratch learns less of the reasoning behind historical research, and that skill is hard to recover later
- A clean, well-formatted draft invites less scrutiny than a blank page demands effort, which makes over-trust the natural failure mode
- Customer material is processed by third-party AI providers, Anthropic and Google Cloud AI, under a customer contract that is not public, and the vendor's position on model training is never stated
- The website identifies business visitors by name through a third-party partner, using cookies prefixed _reb2b, with an opt-out the visitor has to go and use
- With no GDPR mention and no data processing agreement, a firm handling European personal data has nothing to lean on
Setup & Integrations
Technical difficulty
Technically, close to nothing. Compyle is a web product: you sign in at app.compyle.ai, with no installation, no API to wire up, no extension and no application to deploy. The only preparatory item mentioned is your firm's report template, since drafts are produced inside it. The real hurdle is commercial rather than technical, access being granted through a demo and then a separate written agreement, whether an order form, a pilot agreement or a master services agreement. The site documents no onboarding procedure, no time to first value and no technical prerequisites.
Deployment
Integrations
Supported languages
Behind Compyle
Fundraising
Social
Resources
All the official URLs gathered for verification and reference.
Alternatives
Tools that compete with or complement Compyle.
Frequently asked questions
What does Compyle actually do?
Which standard is it built around?
What data does it collect for a property?
How long does a data package take?
Does the AI sign the report?
How can I verify a claim in a draft?
Is the report produced in my own template?
What does it cost?
Is there a mobile app or an API?
Where is data hosted, and is the GDPR covered?
Should you pick Compyle?
Compyle is one of those tools that is easy to judge because it refuses to be vague. It produces one deliverable, the Phase I ESA, against one standard, ASTM E1527-21, for one market. Everything on the site follows from that choice, and a firm outside American environmental consulting can rule it out in a sentence.
Within that scope the proposition is unusually checkable. Three claims carry it: record packages the same day instead of the three to ten days the site attributes to EDR or ERIS; one-to-one linking between each claim and the document behind it, complete with archive reference and retrieval date; and drafts written into the firm's own template and voice. The stance on human review is equally clear, the Environmental Professional commenting, approving section by section and signing, with the product positioned to fit existing QC and peer review rather than replace them.
What is missing is mostly commercial and legal. There is no public pricing, no self-serve purchase, no announced free plan or trial, so any evaluation starts with a sales conversation. There is no mention of the GDPR, no data processing agreement and no subprocessor list, which matters for anyone touching European personal data. And the auditability figures, 100% claims sourced, zero unverified claims, are the vendor's own, without published methodology or third-party audit.
The company is very young, its domain registered in October 2025, though the founders previously built AI compliance review systems at scale at Hadrius and the homepage carries a Y Combinator badge. For a consulting firm drowning in Phase I production work, it is worth a demo, with the contract terms read carefully before signing.
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