Hillstar ConstructionA free homeowner’s guide

A free homeowner’s guide

Before You Sign

How to spot the warning signs of a contractor who will burn you — and understand what actually protects you — before you commit a dollar or a signature.

12345678910
Homeowners meeting a contractor at a table in a bright modern open-plan kitchen.

You remodel a few times in your life. Your contractor does it every day. That gap is where most homeowners get hurt — not through bad luck, but through a check they didn’t make or a detail they never got in writing. This guide walks you through the warning signs that appear before you sign, why each one matters, exactly what to check, and how a well-run contractor handles the same thing differently.

This guide is educational, not legal advice. The California rules below were verified in August 2026 against the Contractors State License Board (cslb.ca.gov) and the California Business & Professions Code as published at leginfo.legislature.ca.gov.

The warning signs

Ten red flags to catch before you sign

None of these require a construction background to spot. They only require knowing what to look for.

A person at a modern kitchen counter making a phone call while checking a laptop, verifying a contractor.
01Red flag

An unverified license — or you’re not sure who’s really signing

What you may see

A license number you never checked, a company name that doesn’t quite match the person in front of you, or paperwork signed by someone other than the licensed contractor.

Why it matters

If the license isn’t active and in the right name, you may have no bond to claim against, no board to complain to, and little real accountability when something goes wrong.

What to check or do

  • Verify the license yourself on the CSLB “Check a License” tool before you sign.
  • Confirm it is active, in the right classification, and matches the exact person and company signing.
  • Do not stop at “This license is current and active.” That line is the beginning of the check, not the end of it — read the whole record, including Additional Status, bonding, and anything CSLB has disclosed.
  • If the page shows “Click here for Complaint Disclosure information,” open it and read what is actually there.
  • If violations are disclosed, read the real wording before you hire — what happened, and whether it is the kind of thing that would happen to you.
Step one — the status line everyone stops atA CSLB license record showing the status “This license is current and active”, the note that all information below should be reviewed, and a Complaint Disclosure link.
This is the screen most homeowners stop at — and CSLB itself does not. Under the green “This license is current and active” it prints “All information below should be reviewed.” Two things on this record deserve a second look: the red “Click here for Complaint Disclosure information” link, and, under Additional Status, that the licence has filed a disciplinary bond — a bond California requires of a licensee with a disciplinary history. Identifying details have been removed.
What opening that link can showA CSLB complaint disclosure record listing five Business and Professions Code violations.
A real disclosure record, with the contractor’s identity removed. Every line is a Business & Professions Code violation: 7068.1 failed to exercise Qualifier’s responsibility · 7109.A departed from trade standards · 7159.D no written change orders · 7159.D9C no payment schedule, payment exceeds value of work · 7159.5A3 exceeded down payment of $1,000 or 10 percent, whichever is least. None of this appears on the status line above it.

Read those last two lines again, because they are not abstractions — they are this guide’s payment rules, already broken on somebody’s real job: a down payment over the legal cap, and payments that ran ahead of the work. That is red flag 03, after the fact. Five minutes on the licence record is the cheapest part of this entire guide.

Verified · California law

CSLB does not publish every complaint. It discloses complaints referred for accusation, or referred for investigation once staff determines a probable violation posing a risk of harm to the public. Citations are disclosed for five years after compliance; accusations resulting in suspension or stayed revocation for seven years after settlement; a revocation that is not stayed is disclosed indefinitely. Complaints resolved in the contractor’s favor are not disclosed at all.

So read a quiet record carefully: no complaint link is not proof that no one ever complained. It means nothing currently meets those disclosure thresholds. Equally, a disclosed complaint is an allegation — read what it actually says before you judge it.

Source: Business & Professions Code §7124.6; California Contractors State License Board complaint disclosure policy (cslb.ca.gov). Verified against leginfo.legislature.ca.gov, August 2026.
Verified · California law

Home improvement work of $500 or more requires an active state contractor’s license and a written contract. You can verify any contractor free on the CSLB “Check a License” tool.

Source: California Contractors State License Board (cslb.ca.gov), summarizing Business & Professions Code §7159. Verified August 2026.
How a well-run contractor handles it

A well-run contractor is clear about exactly who they are and who signs your agreement, and welcomes you checking their credentials before you ever talk price.

Three multi-page proposals laid side by side on a clean modern desk.
02Red flag

A bid that comes in far below the others

What you may see

Three bids, and one is dramatically cheaper than the rest. It’s tempting — and that’s exactly the point.

Why it matters

A number that low usually means something was left out: scope, materials, permits, or realistic labor. Once the walls are open and you’re committed, that “saving” often returns as change orders and surprises.

What to check or do

  • Get about three bids and compare them line by line, not just on the bottom number.
  • Be suspicious of the one far below the rest, and ask each contractor to show exactly what is and isn’t included.
How a well-run contractor handles it

A well-run contractor takes the time to explain the full scope so you understand what your number actually covers, and revises the proposal until it reflects the real project.

Hands with an open checkbook and a laptop showing online banking on a modern kitchen island.
03Red flag

A big deposit — or payments running ahead of the work

What you may see

A large sum demanded up front — or a payment schedule built from round percentages (25%, 30%, 40%) that fall due on dates, or at signing, rather than on work actually finished.

Why it matters

Once your money is ahead of the work, your leverage is gone. If the job stalls or the contractor walks, you’re chasing money that’s already spent. A payment schedule is meant to follow the job, not finance the contractor ahead of it.

What to check or do

  • Watch the payment schedule and never let payments get ahead of real progress.
  • A percentage is not automatically illegal. There is no rule making 25, 30 or 40 percent unlawful on its face. The question is always the same one: has the money got ahead of the value actually delivered?
  • A line reading “25% payment” does not by itself entitle anyone to collect 25% — not until completed work and delivered materials worth that much exist.
  • Ask what each payment actually buys, and get it written that way: which work, which materials.
  • Watch the word. The test is material delivered — not ordered, not purchased, not sitting at the supplier.
  • Document every payment you make.
Verified · California law

The down payment on a home improvement contract cannot exceed $1,000 or 10 percent of the contract price, whichever is less — excluding finance charges. The same $1,000 ceiling applies whether the job is a modest kitchen or a whole-house remodel.

Source: California Contractors State License Board (cslb.ca.gov); Business & Professions Code §7159.5(a)(3), which reads “the downpayment shall not exceed one thousand dollars ($1,000) or 10 percent of the contract amount, whichever amount is less.” Verified against leginfo.legislature.ca.gov, August 2026.
Verified · California law

Except for that down payment, a contractor may neither request nor accept payment that exceeds the value of the work performed or material delivered. A percentage written into a contract does not change this: the number may be on the page, but the money still may not run ahead of the value actually delivered.

Note the word the statute uses — material delivered. Material ordered, purchased, or waiting at a supplier is not delivered to your job.

Source: Business & Professions Code §7159.5(a)(5), which reads “Except for a downpayment, the contractor shall neither request nor accept payment that exceeds the value of the work performed or material delivered.” Verified against leginfo.legislature.ca.gov; California Contractors State License Board (cslb.ca.gov), August 2026.
Verified · California law

Each progress payment must be stated in dollars and cents and specifically reference the amount of work or services to be performed and materials and equipment to be supplied. That is why a bare “25% on start” line is worth questioning: it names a number, not the work it buys.

The law also requires your contract to carry this warning in its own words: “IT IS AGAINST THE LAW FOR A CONTRACTOR TO COLLECT PAYMENT FOR WORK NOT YET COMPLETED, OR FOR MATERIALS NOT YET DELIVERED.”

Source: Business & Professions Code §7159(d)(9). Verified against leginfo.legislature.ca.gov, August 2026.
How a well-run contractor handles it

A well-run contractor ties payments to completed work and delivered materials, so what you’ve paid always matches what’s actually done.

A person carefully reading a multi-page contract at a modern dining table.
04Red flag

A vague contract or proposal you didn’t fully read

What you may see

A thin proposal with fuzzy scope, unspecified details, or a contract you’re being nudged to sign quickly without reading every line.

Why it matters

Anything vague on paper becomes a dispute later. If it isn’t written down, it’s your word against theirs — and you’ll be the one paying to sort it out.

What to check or do

  • Read the entire contract and proposal before you sign.
  • Make sure scope, timeline, payment schedule, materials and responsibilities are all spelled out.
How a well-run contractor handles it

A well-run contractor meets with you as many times as it takes before signing and walks you through the scope, so you know exactly what you’re agreeing to.

Rolled blueprints and a building permit on a table at a modern residential construction site.
05Red flag

“We don’t need a permit” — or pressure to pull it yourself

What you may see

A contractor who offers to skip permits to save time or money, or who asks you to pull an Owner-Builder permit in your name.

Why it matters

Unpermitted work can fail inspection, cause problems with insurance, and come back to haunt you when you sell. And when you pull an Owner-Builder permit, you can take on liability that should sit with the contractor.

What to check or do

  • Verify that the right permits are being pulled, in the contractor’s name.
  • Understand the risks of Owner-Builder before you ever sign one.
How a well-run contractor handles it

A well-run contractor handles permits properly and keeps you informed at each step, so the work is inspected and protected the way it should be.

A professional construction crew working on a contemporary home remodel, organized site.
06Red flag

Hidden subcontractors — and the lien trap

What you may see

You don’t actually know who’s doing the work, or whether the subs and suppliers on your job are being paid.

Why it matters

If your contractor doesn’t pay a subcontractor or supplier, that sub can place a lien on your home — even after you’ve paid the contractor in full. In the worst case, you pay twice.

What to check or do

  • Know which subcontractors are working on your project.
  • Obtain the appropriate lien releases as you make payments, and keep documentation of everything you pay.
How a well-run contractor handles it

A well-run contractor keeps you informed about the work and the people doing it throughout the project, so there are no surprises about who’s on your job.

Modern interior material samples arranged on a table: quartz, porcelain tile, oak veneer and brass fixtures.
07Red flag

Materials that were never clearly specified

What you may see

The proposal lists “tile,” “cabinets,” or “fixtures” with no brand, grade or model — just a category and a price.

Why it matters

Vague materials leave room to install cheaper products than you pictured, and leave you no clear standard to hold anyone to.

What to check or do

  • Specify products and materials clearly in the contract — the actual products, grades and allowances — so what shows up is what you agreed to.
How a well-run contractor handles it

A well-run contractor works the details into the scope so your materials are defined and understood before the job begins.

A modern home mid-renovation, an open stud wall with new wiring and plumbing visible before drywall.
08Red flag

Foreseeable problems that turn into “surprise” change orders

What you may see

Issues a careful contractor could have seen coming — suddenly presented mid-job as unexpected extras that raise your bill.

Why it matters

Every “surprise” that could have been investigated up front is money you didn’t plan for, at the moment you’re least able to walk away.

What to check or do

  • Push to investigate foreseeable conditions before signing, so they’re accounted for in the plan rather than sprung on you later.
Verified · California law

A change to the price or scope must be a written change order, signed by both you and the contractor before that work begins. A promise made only in conversation or email is not a change to your contract.

Source: California Contractors State License Board (cslb.ca.gov), summarizing Business & Professions Code §7159. Verified August 2026.
How a well-run contractor handles it

A well-run contractor takes the time up front to understand your project, so fewer things become avoidable surprises once the work is underway.

A tidy modern home-office desk with a laptop, an organized folder of documents and a notebook.
09Red flag

Cash-only, handshake deals, nothing in writing

What you may see

A push toward cash payments and a “don’t worry, we’re good” attitude instead of clear paperwork.

Why it matters

Cash and handshakes leave no record. If there’s a dispute, there’s nothing to point to — no proof of what you paid or what was promised.

What to check or do

  • Keep everything important in writing and document all payments with a clear paper trail.
  • A trustworthy contractor has no problem putting things on paper.
How a well-run contractor handles it

A well-run contractor puts the scope, the schedule and the payment terms in writing, so you always have a clear record to rely on.

A homeowner and a contractor reviewing plans on a tablet in a bright, freshly renovated modern room.
10Red flag

Poor communication — the contractor who goes quiet

What you may see

Slow replies, vague answers, and a feeling that you’re chasing your own contractor for updates on your own home.

Why it matters

Poor communication before you sign rarely improves after. It’s often the first sign of a job that will drag, stall, or leave you in the dark.

What to check or do

  • Pay attention to how a contractor communicates during the bidding stage.
  • Clear, patient answers now are a good sign of how the project itself will run.
How a well-run contractor handles it

A well-run contractor keeps the homeowner informed throughout the project, so you always know where things stand.

Verified · California law

Most home improvement contracts signed away from the contractor’s place of business can be canceled within three business days — five if you are 65 or older, and seven for repairs after a declared disaster. The contract must include a Notice of Cancellation form.

Source: California Contractors State License Board (cslb.ca.gov); California Civil Code §1689.6. Verified August 2026.

Your five-minute check before any signature

A person at a modern desk reviewing a checklist on a laptop with a notepad beside it.
A finished modern kitchen in warm evening light, contemporary cabinets and quartz counters, someone cooking.

The right contractor changes everything

Spotting the red flags is only half of it. The other half is recognizing what a good contractor actually does: takes the time to explain the scope, revises the proposal until it’s right, ties your payments to real progress, and keeps you informed from the first meeting to the final inspection.

That’s what turns a remodel from a gamble into a plan. No one can promise a perfect project — but choosing carefully, and knowing what to look for, gives you a far better chance of a smooth one.

Before You Sign — a free homeowner’s guide from Hillstar Construction
Written from about forty years of building in Los Angeles

Ask AI Mickey about hiring a contractor

Unsure about something in a contract or a bid? Ask — it will explain how the pieces work and point you to the official source. It does not give legal advice and will not review your specific contract. It knows the homeowner research and Lior’s experience behind this guide. There is nothing to sign up for and no email required.

0 / 500

AI Mickey does not quote prices or permit timelines, does not give legal advice, and will not tell you which contractor to choose — it will say so plainly and point you to the part of the guide that covers it. You never need an account or an email to ask, and it is best not to include personal details in a question.