Commercial work is not one market you break into. It is five separate doors with five different buyers and five very different demands on your bank account, and most residential contractors stall because they queue at the slowest, most capital-hungry door first.
That door is the general contractor bid list, where a small shop waits longest for the first dollar. Meanwhile the trade next door has been billing a commercial landlord monthly for two years off a two-page maintenance agreement that took one meeting to sign. This piece maps all five doors, ranks them by how long your money is gone, and gives you the cash test to run before you bid anything.
The short answer
To get commercial contracts, pick the door your balance sheet can survive, assemble your credential package before anyone asks for it, and enter through recurring maintenance or small tenant improvement work rather than competitive hard bids. Then price the cash float explicitly into every number you submit.
That sequence is backwards from the usual advice, which starts with bid platforms and bonding. Bid platforms are the last step, because the constraint on a small contractor entering commercial is almost never finding projects. Projects are easy to find. The constraint is surviving the gap between doing the work and being paid for it.
Commercial is five doors, not one
| Door | Who signs | Time to first dollar | Cash you float | Main gate |
|---|---|---|---|---|
| Maintenance agreement | Facility or building manager | 30 to 45 days | Almost none | Insurance certificate, reliability |
| Owner-occupied business | The business owner | 30 to 60 days | Low, deposits are still normal | Trust, references |
| Property manager vendor list | Property or asset manager | 60 to 120 days | Moderate, NTE limits apply | Credentialing package |
| Commercial GC bid list | Estimator, then PM | 6 to 18 months | High | Prequalification, bid volume |
| Public and institutional | Purchasing department | 6 to 24 months | Highest | Bonding, prevailing wage, certified payroll |
The table is the argument. Every one of these is real commercial work, they differ by an order of magnitude in how long your money is gone, and nothing about a contract being larger makes it a better first move.
Door 1: the maintenance agreement
This is the door most residential trades should use, and almost nobody writes about it, because the guides on breaking into commercial come from construction software vendors and construction lenders who assume commercial means projects.
For HVAC, plumbing, electrical, refrigeration, landscaping, cleaning and pest control, the entry point is a recurring service agreement on a building: quarterly filter and belt changes, a monthly walkthrough, seasonal shutdowns. You bill monthly or quarterly. There is no pay application, no submittal log, no retainage, and usually no bond.
The demand is stronger than most owners realise, because buyers need the paperwork for reasons unrelated to the work. As one commenter put it in an r/HVAC thread on service agreements, most customers "have to have something to insert on their contract, budget purposes, insurance requirements, landlord agreements where they have to prove they are having work completed and on what equipment how many times a year."
The gap is that plenty of capable trades never paper it. That thread's original poster, already serving commercial customers, wrote: "I don't have any formal contracts with my commercial customers so technically they are free to drop me/switch to someone else at any time." A separate r/HVAC owner with ten years in business, asked to quote a banquet hall with 15 package units and 12 refrigeration condensers, added: "I have no idea how to begin pricing for this."
So the buyer wants the agreement and the competing contractor cannot be bothered to write one. It also earns you leverage back: "If they don't have an active service contract, we won't respond to a call after hours and they take a backseat to contract customers when we're slammed."
Tip
Price a maintenance agreement off visit hours plus a consumables allowance, quote the repair rate separately, and put in writing what a visit covers and what triggers a billable call. The line most contractors get wrong is the "all inclusive" one, where a blocked drain or a wrong thermostat setting becomes a free truck roll forever. Name the exclusions in the agreement, not on the phone at 10pm.
Door 2: the owner-occupied business
The restaurant opening a second location, the dental office redoing its operatory, the machine shop that owns its building. One person signs, one person pays, deposits are still normal, and the sales conversation is the residential one you already run well. The route in is the network you already have: your residential customers own businesses, your suppliers know who is renovating.
Door 3: the property manager vendor list
One manager can hold twenty buildings, which makes this the highest-leverage single relationship in commercial. A contractor in the r/Construction thread on winning commercial projects described the compounding: "I began getting in with a property management company, that led me to doing their rehab projects, eventually new construction projects." The trade-off is a credentialing process and a not-to-exceed ceiling on work orders, both covered in how to get on a property manager vendor list.
Door 4: the commercial GC bid list
The door everybody tries first and the one that takes longest. It is how most specialty trades eventually build a commercial book, and a poor first move for a shop with three months of cash. Billd's transition guide tells contractors to expect up to 50 bids before the first award. Mechanics, win rates and follow-up cadence are in how to get work from general contractors.
What belongs here is the pricing tactic for your first bids, from a commercial GC with six years in the seat: "Always bid a little high with a new GC, if you don't get it, reduce your margin on the next bid. Do this until you win. This helps you to determine your competition."
Read the reply underneath before adopting it. Another estimator warned: "If you're consistently high, the Estimator may stop inviting you." The opposite error is worse: "Don't go into it bidding low with the intention of getting lots of change orders. That's the easiest way to get off my bid list."
Door 5: public and institutional
Schools, municipalities, hospitals, government buildings. Advertised openly, awarded largely on price, gated by bonding, prevailing wage and certified payroll. The most transparent door and the most expensive to walk through. The same GC flagged the trap: on some government jobs "it could cost you more than the job is worth to purchase the coverage," and you must "add extra money for office work required for dealing with the government paperwork."
Run the cash test before you bid anything
Here is the arithmetic that decides whether you are ready, using averages rather than a best case.
Take a $60,000 commercial scope over two months. Materials are $22,000 on 30-day supplier terms. Labour is roughly $9,000 a month and it does not wait. You bill at the end of month one for $35,000 of work in place, 10 percent of it held back. By the time the first cheque arrives you have paid out $40,000 and received $31,500, with $3,500 sitting in holdback. Peak cash out is around $40,000 on a $60,000 contract, and that assumes nothing slips.
Things slip. One contractor in that r/Construction thread described the version nobody budgets for: "I have $33k in Plumbing fixtures (that I haven't been able to bill) for sitting in my shop for a project that has been delayed until April." Bought, paid for, unbillable, in the shop.
Watch out
The float test, three questions. One: can you pay every cost of this job for 90 days with nothing arriving? Two: if the first cheque is 30 days late, do you still make payroll? Three: if the holdback never comes back, does the job still make money? If any answer is no, the job is too big for your balance sheet, regardless of how good the margin looks.
The same commercial GC put it in one line: "Commercial is tough for small companies, it can take 60-90 days to get paid. Make sure you can float the job financially."
Two defences are underused. Negotiate supplier terms before the bid rather than after the award. And ask for a signed-contract deposit, which the contractor above used to bridge his own entry: "I bill for a deposit once the contract is signed to cover expenses until the invoices start paying out." Commercial buyers refuse deposits less often than residential contractors assume, particularly on owner-occupied and maintenance work.
Price the cost of capital into the number
This is the part with the strongest data behind it and the part almost nobody entering commercial does deliberately.
Billd's 2026 National Subcontractor Market Report, published in June 2026 and based on more than 600 subcontractors, suppliers and general contractors, found subcontractors wait an average of 51 days to be paid after submitting a pay application. Their general contractors estimate they pay in 35. That 16-day gap is the most useful number in this article, because it means the buyer across the table genuinely believes he is a fast payer.
Sixty-four percent of subcontractors reported being slow-paid by their GC, 83 percent were worried about cash flow, up from 71 percent a year earlier, and materials rose 12 percent against labour at 11 percent, pulling average net profit margin to 13.3 percent.
Now the payoff. Subcontractors who build the cost of capital into their bids reported net margins of 14.6 percent against 11.7 percent for those who do not, and 62 percent of them grew year over year against 46 percent of the rest. Fifty-four percent now price it in, up from 45 percent in 2024.
By the numbers
Float $40,000 for 75 days on a line of credit at 12 percent and the interest alone is about $986, roughly 1.6 percent of a $60,000 contract. Add the risk that the cheque is late and you arrive near the 8 percent average bid inflation that Talker Research measured in April 2025, surveying 250 US general contractors and subcontractors on behalf of Built. That pad is already in your competitors' numbers. It is not in yours until you put it there.
Two moves. Put mobilisation or a signed-contract deposit on the bid as its own line rather than burying the cost in unit rates, so it survives value engineering. And ask every GC whether they run an early pay programme: 28 percent of subcontractors use one while 76 percent of general contractors do not offer one, so asking costs nothing and occasionally works.
Building a commercial pipeline while the residential phone still has to ring is a two-market problem, and the usual failure is that the slower market quietly eats the faster one. Pavado builds done-for-you lead generation systems for local service businesses: a dedicated conversion page, a qualifying form that arrives with the answers already attached, and tracking from first contact to signed job, so the residential work funding your float keeps coming while you chase commercial work that takes a year to land.
What changed in Canada on January 1, 2026
Every guide ranking for this topic is written for a United States reader and tells you to expect pay-when-paid and wait. In Canada that advice is now materially wrong, and the amendments are recent enough that plenty of buyers have not adjusted either.
Ontario's prompt payment regime has been in force since October 1, 2019, with major amendments in force since January 1, 2026. The core timeline, at section 6.4 of the Construction Act and summarised by Bennett Jones in February 2026:
- An owner must pay a proper invoice within 28 days, unless a notice of non-payment is served within 14 days.
- A contractor must pay subcontractors within 7 days of being paid. If the owner does not pay, the contractor must still pay each affected subcontractor no later than 35 days after that invoice went to the owner, with a 42-day fallback one tier further down.
Three of the 2026 changes matter directly to a small contractor.
The deemed proper invoice. An invoice that misses the statutory criteria is now deemed proper unless the owner objects in writing within 7 days and states what is needed to fix it. Your paperwork no longer has to be perfect for the clock to start. Theirs has to be fast.
Mandatory annual holdback release. Ontario is the first province to require the 10 percent statutory holdback to be released annually on every construction contract, regardless of price, schedule length or what the contract says. The owner publishes notice within 14 days of the contract anniversary and pays 60 to 74 days after that, and the contractor passes the subcontractors' share down within 14 days.
Wider, later adjudication. Adjudication now covers disputes over scope of work, a requested change in contract price and a requested extension of time, not just payment, and you can start it within 90 days after the contract is completed, abandoned or terminated. One caution on the new private adjudicator option: the fee must be at least C$1,000 per hour, so for a small claim the ODACC registry route is the realistic one.
Alberta has run a comparable regime under the Prompt Payment and Construction Lien Act since August 29, 2022. British Columbia's Construction Prompt Payment Act received Royal Assent on November 27, 2025 and awaits regulations.
Note
The takeaway is not that you will litigate. It is that "we pay when we get paid" is a negotiating position rather than a legal one, and knowing the statutory dates changes the tone of the call on day 40. Build your invoice template against the eight required elements once, then send monthly whether or not the contract prompts you.
The paperwork gate, and the bonding myth
Commercial buyers are buying risk transfer before they buy your work, so the credential package is the actual first bid. Assemble it before you approach anyone: certificate of insurance naming the buyer as additional insured, workers compensation or WSIB clearance certificate, trade licence, business number, a written safety programme, and a project list with contacts. Keep one folder with a renewal calendar, because an expired certificate drops you off an approved list silently.
Common minimums are $1 million per occurrence and $2 million aggregate on general liability, with workers compensation mandatory and an umbrella layer often required above it. The wording matters more than the number: additional insured, waiver of subrogation and primary and non-contributory endorsements are where bids get rejected, and they cost money your residential policy does not carry.
Bonding is the requirement most often overstated to new entrants. It is near universal on public work and common on larger private projects, but as one general contractor put it in that thread: "For most light commercial you wont need bonds." Performance and payment bonds run up to about 2.5 percent of project value when you do need them, and capacity is built from CPA-prepared financials and completed work history, not applied for in a week.
What your first commercial contract costs to win
Nobody in this market prices the acquisition. Do the arithmetic once. If up to 50 bids before a first award holds, and a real commercial bid takes four hours between takeoff, RFIs, clarifications and follow-up, that is 200 hours of estimating time. At $75 an hour of loaded owner time, the first commercial contract through the GC door costs roughly $15,000 to win before you turn a single screw.
That is not an argument against commercial. It is an argument for entering through the doors that do not require 50 bids, and for keeping the residential pipeline healthy enough to fund the ones that do. It also explains the advice to call the estimator after every bid: the feedback is what you actually bought with those four hours.
The walk-in myth
The most repeated advice about breaking into commercial is to visit every general contractor's office and introduce yourself. In the r/Construction thread where someone posted it, a commercial estimator replied underneath: "Geez, don't come to my office! I hate that! I'm too busy to have to deal with a bunch of people dropping in to 'introduce themselves'."
A third commenter then asked the only useful question: do you prefer a phone call or an email? That is the move. These buyers are drowning in unqualified approaches, and the contractor who asks which channel they want is already behaving like a commercial vendor.
A 90-day plan to your first commercial contract
Days 1 to 15. Assemble the credential package. Quote the insurance step-up including the additional insured and primary and non-contributory endorsements so you know the real annual cost. Write your maintenance agreement template with a clear covered-versus-billable line.
Days 16 to 45. Doors 1 and 2 only. List every commercial building in your service radius, every residential customer who owns a business, and every supplier contact who knows who is renovating. Target three signed maintenance agreements, not one big project.
Days 46 to 75. Use those agreements as your commercial references. Approach two property managers and two small general contractors, asking each how they prefer to receive a new subcontractor.
Days 76 to 90. Bid your first two scopes with the cost of capital priced in and written clarifications listing what you have and have not included. Run the float test on each before submitting, then call to ask where your number landed.
When to stay residential
If your line of credit covers less than 10 percent of annual revenue, which described 52 percent of subcontractors in Billd's survey, or you cannot survive a 90-day gap on a job's costs, doors 4 and 5 will hurt you. And if your only complaint about homeowners is that they are annoying, commercial will not fix that. It replaces emotional customers with slow ones.
Doors 1, 2 and 3 stay open regardless. Recurring commercial maintenance is the version of this move that improves your cash position rather than straining it, and it is the only door where you can start on Monday. For how the cash cycle constrains what a contracting business can take on, see contractor cash flow management.