The short answer: commercial work pays slower, insures bigger and documents everything. Expect longer payment terms, higher liability limits, possible bonding, and a wall of paperwork before anyone lets you on site. The work itself is often steadier and larger. The thing that kills contractors moving up is not the work. It is the cash gap while waiting to be paid.
Light commercial rarely hurts a residential contractor through the work. It hurts through the terms. Expect to be paid on the client's calendar rather than yours. Net-30 is at the friendly end, and the clock often starts when your invoice is approved rather than when you send it. Expect higher liability limits, certificates of insurance naming the property owner, and workers' compensation clearance before anyone lets you on site. Documentation also becomes a condition of getting paid, not just your own protection. The transition that works is gradual: keep the residential book running, because its fast deposits are what fund the long commercial receivables.
Day 45 is when it gets real. The storefront job went fine. The landlord walked it, shook your hand, said the tenant was thrilled. Your invoice went out the day after substantial completion. That was six and a half weeks ago. Nobody is upset. Nobody is dodging you. The property management company's accounts payable person is perfectly pleasant on the phone, and the check will come exactly when their process says it comes. That is net-60, and the contract you signed said so in plain type.
Meanwhile you have paid your crew six times, paid the electrician's invoice, and paid the supplier for the storefront glass. This is the part of commercial work nobody warns residential contractors about, because from the outside, commercial looks like residential with better clients and bigger checks. The checks are bigger. Almost everything else about how they arrive is different, and the contractors who get hurt moving up are almost never hurt by the work. They are hurt by the terms.
Light commercial (storefront fit-outs, restaurant renovations, small office build-outs, tenant improvements, franchise refreshes) is a genuinely good move for a residential contractor with solid systems. The jobs are larger, the clients are repeat buyers, and winter does not shut them down. But it is a move into a different set of rules, and you want to know the rules before your first net-60 winter.
When does commercial work actually pay?
Residential trained you badly for this, in one specific way: homeowners pay fast because the person approving the payment is standing in the kitchen you just built. Commercial payment goes through a process, and the process does not care that you finished early.
Net-30 is the friendly end. Net-60 is common; net-90 exists, especially one layer down when you are a subcontractor to a larger GC. And "net-60" starts when the invoice is approved, not when you send it: an invoice missing a PO number or a required lien waiver can quietly restart the clock.
Progress billing replaces the deposit-and-final rhythm. On anything beyond a couple of weeks you bill monthly against percentage complete, and the client's representative may review or certify that percentage before payment releases.
Holdback is real money you will not see for months. In much of Canada, lien legislation requires roughly 10% of each payment to be held back until well after substantial completion; in the US, retainage of 5–10% is a contract norm on many commercial jobs. On a $120,000 fit-out, that is $12,000 of your money, often a large slice of your entire margin, arriving 45 to 60 days after everyone else has been paid.
Pay-when-paid clauses flow the wait downhill. If you are subbing to a GC, the contract may say you get paid when they get paid. Read for that clause every time, and price the wait if you accept it.
Run the arithmetic before you bid your first one. A $120,000 tenant improvement over eight weeks means you carry $70,000 to $85,000 of payroll and materials against progress payments arriving 30 to 60 days behind the work, with 10% held back on top. If your account cannot breathe through that gap, the job's profitability is irrelevant; profitable companies go under mid-project this way. An operating line of credit arranged before you need it, supplier terms you have actually negotiated, and material deposits where the contract allows are not sophistication. They are the price of entry.
The job price builder turns hours, materials and the margin you want to keep into the price to quote.
Insurance, bonding, and the wall of paper before you start
The second surprise is that commercial clients ask for proof of things residential clients never mention.
Liability limits go up. Where $2 million in general liability satisfies most residential work, commercial contracts frequently specify $2 million to $5 million, and they will ask for a certificate of insurance naming the property owner and manager as additional insureds. That is a specific document your broker produces, per project, and the site will not let you start without it.
Workers' compensation clearance. In Canada, expect to produce a WSIB (or provincial equivalent) clearance certificate; in the US, proof of workers' comp coverage. Property managers verify this before you are allowed on site because your uninsured worker becomes their claim.
Bonding, sometimes. Most light commercial work does not require bonding, but larger tenant improvements, institutional clients, and anything public may ask for bid or performance bonds. Getting bondable is a financial-statements exercise with a surety, and it takes weeks the first time. Worth starting before the job that needs it, not during.
None of this is a reason to stay away. It is a reason to talk to your broker before you bid, so that "can you provide a COI with additional insureds by Friday" is a yes instead of a scramble.
Why does the paperwork decide when you get paid?
In residential work, documentation protects you. In commercial work, it is often a contractual condition of getting paid. Requirements may include signed contracts on the client's paper rather than your quote form, and written change orders only. Verbal approval from a store manager binds nobody. You may also need to exchange lien waivers with every progress payment, keep daily logs on occupied sites, and take photos at cover-up stages. Final payment may depend on a closeout package containing warranties, as-builts, and equipment manuals.
The residential contractor's habit of running the job from memory and a text thread does not survive contact with this. The discipline does carry over, though. If you already do written change orders, photo records and organized invoices, you are most of the way there, and you will stand out, because plenty of your competitors treat the paper as an insult rather than the job.
Two doors in: bidding and relationships
There are two ways into commercial work, and they are different businesses.
Plan-room bidding. Open tenders, invited bids against four other GCs, lowest number wins. It is how a lot of commercial work is awarded and it is a brutal place to learn, because the winning bid is often the one that missed something, and you are competing against estimators who do this all day. If you go this way, start small, bid scopes you know cold, and expect to lose most of them while your pricing calibrates.
Relationship work. This is the door most residential contractors should use, because it is the one they already know how to open. Property managers, franchise owners, small commercial landlords, and restaurant operators buy the way homeowners buy: from someone they trust, repeatedly. One property manager with thirty storefronts is worth more than any plan room. They have constant small work: a demising wall here, a water-damaged ceiling there. The contractor who answers the phone, shows up with insurance in order, and invoices cleanly becomes the default number they call. Service and small-works commercial is the on-ramp. The jobs are small enough to survive a mistake, and they compound into the fit-out work.
When a new commercial client proposes terms, negotiate like it is part of the job, because it is:
"Net-60 with a 10% holdback is heavier than we carry on a job this size. Here is what works: net-30 on monthly progress draws, and a materials deposit up front for the storefront glass since the supplier requires payment on order. The price on this quote reflects those terms; if the terms need to be net-60, I can hold that, but the number changes."
That last sentence is the one most residential contractors have never said out loud. Extended terms are you financing the client's project. Financing has a cost. Put it in the price or do not accept it.
What changes when you estimate a commercial job?
The scope reads familiar: framing, electrical, drywall, paint. But commercial estimating has its own gravity:
- Occupied and after-hours work. A restaurant renovation that keeps trading, or a mall that only allows noisy work before 10 a.m., can add 20–40% to labor. Ask about site hours before you price, every time.
- Drawings and specs govern. Where a residential quote is often the scope document, here you price to drawings and a spec book, and "equal or approved alternate" has a process. What the drawings say beats what the walkthrough suggested.
- Engineered and code-driven items. Fire separations, exit hardware, accessibility requirements, commercial-grade mechanical and electrical. These have no residential equivalent and no residential price memory. Sub them to trades who live in commercial until you have your own history.
- General conditions are a real line. Site supervision, hoarding, dust control, disposal, permits, insurance premiums per project. Commercial estimators carry these explicitly. Residential estimators who fold them into "labor" find out why that does not scale.
Keep one foot in residential
Contractors rarely get burned moving into commercial too slowly. They get burned moving too completely. The transition plan that works looks boring: keep the residential book running while commercial ramps.
Residential is your cash flow. Deposits up front, payment on completion, money in days. That is what funds the 60-day commercial receivables without a line of credit doing all the work. It is also your hedge: commercial construction moves with business investment cycles, and a downturn that empties the fit-out pipeline tends to leave kitchens and basements alone. A book that is one-third commercial and growing, funded by a residential side that still pays the payroll, survives a bad quarter in either market. A book that flipped entirely to commercial in year one is a bet that nothing goes wrong during the exact period you are least experienced.
Ramp deliberately: one commercial job at a time until you have been through a full cycle (bid, build, bill, holdback release) and know your numbers on the far side.
Where Zeus fits
Most of what commercial demands is discipline you can carry in your pocket. Zeus covers the working layer. It provides quotes with e-signature for the small-works stream and payment schedules the client can sign. Each deposit and progress payment is recorded against its stage. Invoices use server-assigned, gap-free numbering, creating the kind of clean paper trail an accounts payable department stops questioning. Approved extras become dated changes to the job's agreed price, with the reason attached. That keeps your contract total aligned with what was authorized. The Job Photo Organizer's GPS scan proposes a job for each photo in your camera roll, and you confirm it. That is how the before-cover-up record actually gets filed. The Sent Documents archive also makes a request to "resend the signed quote from March" a one-minute task. Zeus will not negotiate your holdback for you. It will make you the contractor whose paperwork never holds up a payment.
Frequently asked questions
Do I need a different license for commercial work?
Often no for light commercial, but verify. Licensing is provincial, state, and municipal, and some jurisdictions distinguish residential and commercial contractor classes or set commercial-specific requirements for certain trades and building types. The building code side changes more than the license side: commercial work pulls in fire separation, accessibility, and occupancy requirements your residential experience has not exercised. Budget for a code consultant or lean on experienced subcontractors early.
Should I ever accept net-90?
Only knowingly, and only priced. Net-90 means you are a bank for three months. A rough rule is to add your cost of that money, line-of-credit interest plus a risk margin, to the bid. For a first commercial client, pushing for net-30 with progress draws is normal and expected; if a prospective client will not move off net-90 and will not accept it in the price, they are telling you how the relationship will go.
What is holdback or retainage actually for?
It is security: for lien claims from unpaid subcontractors and suppliers (the Canadian statutory version) or for performance and deficiencies (the common US contract version). It is not the client being difficult, and it is releasable. Know the trigger in your jurisdiction or contract, whether that is substantial completion plus a lien period or deficiency sign-off, and invoice for it the day it is due. Holdback that nobody invoices for has a way of being forgotten by everyone except you.
How big should my first commercial job be?
Small enough that its worst case is a lesson, not an ending. A $15,000–$40,000 tenant refresh or service scope for a property manager teaches the whole cycle at survivable stakes: COIs, progress billing, lien waivers, closeout. What you learn about the client's payment behavior on a $20,000 job is exactly what you need to know before accepting their $200,000 one.
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