Know who you're building with.

Reviews, payment records and verification levels for Colorado construction. See how a company pays and performs before you sign.

Join the pilot See the demo

General contractorTrade Verified

Aldervane General Contractors

Wood-frame multifamily, Denver

Payment index76 / 1009 invoices, avg 20 days past terms

As a payer3.7 / 52 reviews, both with project proof

Performance4.2 / 51 review from the developer

Reviews3All 3 with project proof, 1 anonymous

Anonymous subcontractor Verified project

“Organized site. Payment lag of two to three weeks past terms on most applications.”

Response from Aldervane

“We moved to a 15th-of-month check run in August and expect to be inside terms from here.”

Sample profiles. The companies are fictional. Open the full demo

Most of what you need to know shows up after you sign.

You learn how a GC pays once your crew is mobilized.By then the material is bought and the schedule is set.
The low bidder walked off a job last year.Under a different LLC, so nothing comes up when you search the name.
Credit terms get set on references the customer picked.Nobody hands a supplier the name of the vendor they paid 90 days late.

Subs and GCs don't even agree on how late payment is.

Subs said51 days

GCs guessed35 days

Average wait after submitting a pay app. Billd National Subcontractor Market Report, June 2026, survey of 600+ subs, suppliers and GCs

Interior wall framing on a residential job site

Anyone can review. Proof decides the weight.

Reviews go live as soon as they're posted. Readers can filter to verified projects only.

Find or add the company
Search the directory. If a company isn't there, add it. We check for duplicates, so every company has one listing.
Post named or anonymous
Write under your company name, or as “Anonymous GC” or “Anonymous supplier”. Moderators can still see who posted.
Attach proof if you have it
A subcontract, PO or pay app earns a Verified project badge and full weight. Without proof, the review is labeled Unverified experience and counts half.
Reply, don't delete
The company can answer publicly or send facts to a moderator. Nobody can erase a review.

Every company gets a public verification level.

It's free for anyone to see, and it separates established, insured trades from an LLC set up last month.

Trade Verified

Active Colorado registration
Confirmed address and phone
Current liability insurance and workers' comp
Trade license where the trade requires one
2+ years in business
3+ verified projects or references

Registered business

A real, active business, but some checks are still missing.

Listed only

Added by a member and not checked yet.

Hiring a contractor for your own property?

When ContractorRef opens, verification levels are free to check for property owners too. See whether a company is registered, insured and licensed before you sign.

Try the payment math.

Days late = date paid minus the contractual due date, never below zero. Some payments are set aside instead of counted.

Result

55 days late

Payment arrived 55 days after the due date. This counts toward the payment index.

Effect on the sample GC

Aldervane's payment index: 76 becomes 72

Demo scoring. The real weights get set with pilot companies.

What gets rated depends on who paid whom.

Payment and performance are separate scores. A good builder can be a slow payer, and the profile shows both.

The paid side rates the payer Electrical sub GC

Payment reliability
Change-order fairness
Schedule coordination
Site readiness
Communication
Dispute resolution

The payer rates the work GC electrical sub

Workmanship and quality
Schedule adherence
Safety practices
Communication
Change-order paperwork
Punch list and warranty

Suppliers work the same way. A supplier rates its customer on payment, order clarity and delivery access. The customer rates the supplier's delivery times, order accuracy, product quality and billing.

Fair question: don't these tools already exist?

Some of them cover part of it. Here's what each kind is built for, and what it leaves out.

Tool	How it works	What it can't tell you
Lien and payment toolsLevelset (Procore)	Lien notices and waivers. Its public payment profiles used to rate GCs and owners as fast or slow payers.	Ratings ran one way, subs and suppliers rating GCs and owners. Levelset has since stopped hosting contractor reviews and hid the payment score. Levelset FAQ (archived)
Business credit reportsD&B, Experian	Suppliers report how a buyer pays its bills.	Only suppliers that choose to report are counted. Experian says about 10,000 of the 500,000+ suppliers that extend credit report to it. Nothing on how a company runs a job. Experian FAQ
Prequalification platformsISNetworld, Highwire, TradeTapp	The hiring company vets a contractor's safety, insurance and financials.	It runs one way. The sub doesn't rate the GC or owner back, so you see nothing about how the GC or owner pays.
Homeowner reviews and BBBAngi, BuildZoom, BBB	Property owners review contractors. BBB's grade leans on complaint history.	Company-to-company work: how a GC treats its subs, how a sub performs for a GC, how a builder pays its suppliers.
ContractorRef	Companies review each other, named or anonymous. Reviews with project proof count fully, and every company has a public verification level.	Credit history and full prequalification. Use it alongside those tools, not instead of them.

Proof counts.

A review with a subcontract, PO or pay app attached gets a Verified project badge and full weight. Without proof it counts half, and readers can filter it out.

A new LLC isn't automatically a clean slate.

We check Colorado Secretary of State records for shared registered agents and addresses. A moderator reviews each possible match, and the company can respond before anything is linked.

Anonymous, not unaccountable.

An anonymous review shows only the type of company. Moderators can see who posted it, so a disputed review can be checked.

Rules that make it hard to use as a weapon.

A rating site is only worth checking if the companies on it think it's fair. These rules apply to everyone.

Payment records

A disputed invoice is set aside while a moderator checks the documented reason. The number of disputes shows on the profile.
Retainage isn't late until it's due for release. Approved extensions and disputed change orders don't count as late.
Fewer than 3 records shows “Insufficient data”, not a low score.
Invoice amounts and contract terms aren't shown publicly.

Reviews

Reviews describe companies, not individual employees.
Any company can respond publicly or take a review to a moderator. The review stays up while it's checked.
A company never pays to see or answer its own reviews, and paying never changes a score.
If a moderator is connected to a company, someone else handles its records.

What each side gets out of it.

General contractors and CMs: See a sub's schedule, safety and closeout record from other GCs before you award. And if you pay on time, there's finally a record of it.
Subcontractors: See how a GC or developer pays before you bid: days past terms, how change orders get handled, whether the site is ready when they say it is.
Material suppliers: Check payment history from other suppliers and trades before you open an account or raise a credit limit.
Developers and homebuilders: Screen GCs and trades by verification level and finished projects, and see how your own pay practices look from the other side.

We're starting with about 30 Colorado companies.

GCs and developers, trades, and suppliers anywhere in Colorado. Free during the pilot.

What happens after you sign up

We check your company against Colorado Secretary of State records.
You get an email invite to set your password and open your account.
In your account, pick the companies you've worked with and leave feedback, under your company name or anonymously.

What we ask

A few finished projects you can document, and honest feedback on the rules. You get a say in how scores and disputes work.

Nothing is published outside the pilot group until the dispute process has been tested.

Join the Colorado pilot

Takes a minute. We'll reach out within a few business days.

Company name

Your name

Work email

Phone (optional)

Company type

Trade or specialty (optional)

State you mostly work in

What would you check first? (optional)

We only use this to talk with you about the pilot. Privacy notice

Questions we hear first.

Something else? Ask in the pilot form and we'll answer it directly.

Can I post anonymously?

Yes, you choose for each review. An anonymous review shows only the type of company, like “Anonymous GC”. Moderators can see who wrote it, so a disputed review can be checked. In a small market people may still guess from the trade and the project, so we show that warning before you post.

Can a company take down a bad review?

No. It can respond publicly, and it can send facts to a moderator if something is wrong. The review stays up while it's checked, corrections are logged, and paying never changes a score.

Can I review a company that isn't listed?

Yes. Add it, and we check for duplicates so every company has one shared listing. A company you add starts as “Listed only” until it's checked.

What counts as project proof?

A subcontract, purchase order, pay app or invoice that shows the two companies worked together. Moderators see the document. Other members see only the Verified project badge.

We held a payment for a reason. Will that count against us?

Mark the invoice as disputed and attach the reason. A moderator checks it, and it doesn't count toward the payment score while it's open. The number of disputes shows on your profile.

Who sees our invoices?

Other members see each invoice's due date, paid date and days late. Not amounts or contract terms. Moderators and the two companies involved see the documents.

How do you catch someone who closes one LLC and opens another?

Colorado doesn't list LLC owners publicly, so we compare what the Secretary of State does publish: registered agent, principal office and mailing address. Plenty of unrelated companies share a commercial registered agent, so a match is only a signal. A moderator reviews every one, and the company can respond before anything is linked.

What does it cost?

Nothing during the pilot. After launch, searching the directory, seeing verification levels, writing reviews, and seeing and answering reviews of your own company stay free.

Why only Colorado?

A network is only useful when your real partners are on it, and payment rules differ by state. Colorado, for example, caps retainage at 5% on most private projects where the prime contract is $150,000 or more, and on the subcontracts under them (HB21-1167). We'd rather get one market right first.