Know what every job made you.
Without opening the laptop after dinner. Top Builder OS is the whole back office for a 1–10 person crew — booking, dispatch, estimates, invoicing, time at its true burdened cost, and real double-entry books that replace QuickBooks. One flat bill. No per-tech tax. No add-on store.
Top Builder OS is the operating and financial system of record for 1–10 person trades crews: it replaces ServiceTitan-class field software AND QuickBooks in one system that owns the books, with eight helpers that never move money without the owner’s approval. Bigger shop on ServiceTitan? The Top Builder AI agent suite below installs on the stack you already run.
Built by a construction bookkeeper and ex-Tesla and SpaceX engineer. Every figure deterministic and audited.
Also adapts to: Housecall Pro · Jobber · FieldEdge · Service Fusion · Workiz · JobNimbus · AccuLynx, one adapter layer, ten systems.
Built with the first 20, not sold to the first 20.
One bill, everything included — pricebook, customer portal, dispatch, the books, every helper, your CPA’s seat. $349/mo covers your whole crew up to 10 people. Bigger shop? $499/mo up to 25. No per-seat math, no add-on tiers, and hiring someone never changes your bill. The app lives at os.topbuilderai.com.
Not a ticket queue. The person who wrote the ledger answers your texts, and your feature request can ship in days. Founding shops shape the product.
Run your whole shop on it for a month. Not for you? One email, full refund, no forms — and your data exports on the way out.
We pull your books out of QuickBooks and prove the balances match your own trial balance before you rely on them. Founding price locked for life.
| Your crew | Top Builder OS | ServiceTitan, same crew* |
| Just you | $349/mo | $245–500/mo |
| You + 3 | $349/mo | $980–2,000/mo |
| You + 9 (10 people) | $349/mo | $2,450–5,000/mo |
| Up to 25 people | $499/mo | $6,125–12,500/mo |
*Published 2026 per-technician pricing analyses ($245–$500/tech/mo), before ServiceTitan’s $5k–$50k implementation fee. Card processing billed at cost by Stripe.
Your back office is one burned-out person and a spreadsheet.
ServiceTitan schedules the work and takes the payment. Everything after the truck leaves, the part that decides whether the job was actually profitable, still runs on your office manager's memory. That doesn't scale, and it's where the money quietly leaks.
Margin found too late
You learn a job lost money at month-end, long after you could have sent the change order.
Materials never billed
Truck stock and special-order parts go out the door and never make it onto an invoice.
Overtime surprises
You see the avoidable overtime on the payroll run, not the week before when you could have moved a crew.
Paperwork buried
COIs, POs, signed estimates, and warranties pile up unfiled until an audit or a dispute forces the dig.
After-hours leads lost
The call that comes in at 9pm goes to voicemail, and to the competitor who picked up.
It all lives in one head
When your best office person is out, the back office stops. There's no system, just them.
See what your back office is leaking, and what the agents put back.
Drag the sliders to match your shop. The math uses transparent benchmarks and updates live. It's an estimate, your fit call includes a real teardown on your own ServiceTitan data.
ServiceTitan Max runs on ServiceTitan's data. We run on your actual books.
Start with the cleanest gap: ServiceTitan's A/R follow-up is manual, so the aging list gets worked by hand or not at all. Our Collections agent works that aging list 24/7 and drafts the dunning. ServiceTitan Max is a serious AI suite and it is getting better fast. Booking and dispatch: Max does those, and does them well, and ServiceTitan's broader platform adds job costing and bill capture on its own data, so we do not fight it there. What it leaves behind is the back-office work that lives in your books, not in ServiceTitan: numbers reconciled to your real QuickBooks general ledger, pricebook re-costing as vendor costs move, and an AI tuned to your specific shop. We plug in alongside Max and never touch your system of record. Here is the honest comparison.
We do not rip out ServiceTitan or fight it on booking, dispatch, and job costing, it does those well. We run the back-office work it leaves manual or leaves to QuickBooks: collections, reconciliation to your real books, and pricebook re-costing, and we learn your specific shop. We plug in alongside it and never touch your system of record.
The same head-to-head holds whatever runs your shop. The agents read your jobs, calls, parts, and paperwork from your platform, ServiceTitan, Buildertrend, or Procore as the flagship integrations, plus Housecall Pro, Jobber, FieldEdge, Service Fusion, Workiz, JobNimbus, and AccuLynx on the same rails, and speak its language back to you. ServiceTitan is the deepest integration; whatever runs your shop, the win is the back-office work it leaves to your books.
Agents that get sharper every week, on purpose, and on a leash.
Most "AI tools" give you the same output on day 365 as day 1. Top Builder AI learns from what you approve and what you edit, so it sounds more like your shop every month. The catch most vendors skip: it learns safely.
It proposes
Every recommendation comes with the reasoning, never a black box.
You approve or edit
Your edits are the training signal. Three matching corrections become a candidate rule.
The eval gate
A candidate must pass a safety check + a regression test before it can ever go live.
You approve the rule
Nothing changes behavior until a human signs off. It's an approval queue, not autopilot.
Canary rollout
New rules roll out gradually, monitored for drift, and roll back if they slip.
Every dollar and hour comes from deterministic, tested code, the learning layer can never touch a figure. So the agents get better at how they advise you, while the math stays exact, auditable, and isolated to your account. Your data never trains another contractor's agents.
Two run alongside ServiceTitan. Six run the work it leaves to your books.
Every one learns from your corrections and shares the same brain. Real numbers from a live demo, your install runs on your own ServiceTitan & QuickBooks data.
Booking · 24/7
Qualifies, slots, and values every inbound call, including the after-hours ones, and learns your booking rules over time.
Routing & Dispatch
Drive-time-optimized assignments that also weigh margin, parts, and overtime, with P1/P2/P3 triage, not just the calendar.
Financial
Projects 30/60/90-day cash and flags margin leakage the day it appears, not at month-end.
Inventory
Reorder points, shrinkage alerts, unbilled materials, and vendor-arbitrage savings.
Workforce
Forecasts understaffing and avoidable overtime a week out, by trade and crew.
Documents
Classifies, extracts, and files every inbound doc to the right customer and folder.
Collections
Works the A/R aging worklist 24/7, drafts the dunning email, SMS, and call, and tracks every promise-to-pay.
Pricebook
Keeps materials costs current from vendor updates and re-prices every item under the sold-hour model, human-approved.
An operator builds this, not a faceless software vendor.
Cory Salisbury · Founder & developer
"I'm not a software company fishing for your interest. I'm the person who installs the agents on your ServiceTitan, tunes them to your shop, and answers when you call. Early operators work with me directly, and every figure is deterministic and audited, so you can trust the numbers."
Bought separately, this is $3,400-$7,000+ a month.
Price each function the way you'd have to buy it today, an answering service, dispatcher hours, a part-time back office. These are published 2026 benchmarks, not our claims. Then look at the last row.
Benchmarks: US 24/7 answering services $400-2,500/mo; HVAC bookkeeping engagements $3,500-5,000/mo (part-time office admin $1,200-2,800/mo); dispatcher time valued at loaded labor rates. Industry data, your exact numbers come from your fit call.
Getting started is three easy steps.
No long setup, no IT project, nothing for your team to learn. You book a call, we onboard you, and we connect your systems and train the AI for you. You start approving, not building.
Book a call
Pick a time at book.topbuilderai.com. Thirty minutes with the developer and a real teardown of where your back office is leaking, on your own ServiceTitan and QuickBooks data. No pitch deck.
Onboarding
We map your departments, your approvers, and the systems you already run. You tell us how your shop works, we tailor all eight agents to it. Nothing changes in how your team operates day to day.
Done for you: connect and train
We connect ServiceTitan and QuickBooks and train the AI on your shop, advisory by default. You build nothing. Board-ready in 30 days or it is free, and from then on you approve, you do not do.
Every agent in every tier. What changes is how much leaves your desk.
The product is identical across tiers, all eight self-learning agents, the deterministic-figure firewall, the per-tenant brain, the full safety stack. You move up when more of the back office should run without you in it. Your monthly scales with the number of people using the system, billed off your connected field platform (ServiceTitan, Procore, or Buildertrend) and QuickBooks employee count.
The $0 install offer, while this quarter's slots last.
- ✓$0 install this quarter (normally $8,000).
- ✓All eight agents installed and tuned for you.
- ✓Board-ready in 30 days or it is free.
- ✓A direct line to the developer who builds it.
Operator
For the owner-operator shop on one office manager and a spreadsheet. Most shops start here.
- ✓All eight self-learning agents installed & tuned on your ServiceTitan & QuickBooks data.
- ✓The Collections agent that retires the A/R spreadsheet.
- ✓24/7 & after-hours Booking, every call answered, qualified & valued.
- ✓Command Center dashboard + the mobile field app for your techs.
- ✓The full safety stack, deterministic figures, advisory-by-default, per-tenant isolation.
- ✓Direct developer line + 30 days of free feature requests.
Autonomous Operating Layer
For the growing multi-crew operator paying 3-4 people to key the scorecard every week.
- ✓The 55-KPI department scorecard that replaces the people keying Bloom Growth, with trends & insights Bloom can't give.
- ✓EOS-native L10 issues, annual goals, budget-to-actual & a trailing-12 P&L.
- ✓Gated autonomous writes, Approve / Auto per agent, every action reversible. The agents act, not just advise.
- ✓Live ServiceTitan + QuickBooks connect.
- ✓The cross-agent brain + governed self-learning.
Operated
For the multi-branch operation that wants the command center run for them.
- ✓Done-for-you operation, we run the command center for you.
- ✓Custom agent builds for the work unique to your shop.
- ✓Multi-system & multi-branch rollout across the whole operation.
- ✓Priority SLA on every request.
The install is $0 this quarter. The one-time install (normally $8,000 on Operator) is waived for contractors who join this quarter's onboarding cohort. You just start your monthly, your rate locked for as long as you stay. Same eight agents, same done-for-you onboarding, same board-ready-or-free guarantee.
If your first month of reports isn't something you'd hand to a partner or a lender, your install fee is refunded in full, and you keep everything the agents produced that month. The risk is mine, not yours.
What every install includes: we connect your ServiceTitan & QuickBooks, map your pricebook and your suppliers (so vendor price files re-price your book automatically), and train all eight agents on your shop, done for you, not a login and a manual. The install scales with your operation (additional suppliers and locations), and everything starts in advisory mode so you see value before anything writes back.
Across every tier: the monthly scales with the number of people using the system, billed off your connected field platform (ServiceTitan, Procore, or Buildertrend) and QuickBooks employee count, so a 10-person shop never subsidizes a 250-person firm. The board-ready-or-free 30-day guarantee covers all three. Upgrade any time, there's no second install fee moving from Operator to Back-Office Command.
You only pay for the people who use it.
After the one-time install, the monthly scales with how many of your team actually use the system, so a 10-person shop never subsidizes a 250-person firm. Operators lock their rate for as long as they stay: the monthly still moves with your team size, but always at the price you started on.
Billed off your connected field platform (ServiceTitan, Procore, or Buildertrend) and QuickBooks employee count, not self-reported seats. The monthly covers hosting, the agent compute, ongoing model & safety updates, and the nightly learning that keeps your agents improving. No per-feature add-ons, every agent, every update, included.
Early operators don't just buy the product. They shape it.
Direct developer access
A private line to the person who builds it. When something matters to your shop, you talk to the source, not a tier-1 rep reading a script.
30 days of free features
For your first month, your feature requests are free scope. The gaps you find become product, fast, for you and every founder after you.
Your rate, locked
A $0 install this quarter (normally $8,000) and your starting price on every monthly tier, locked for as long as you stay. The monthly still scales with how many people use the system, but you always pay the rate you started on, even after prices rise for everyone else.
Questions a serious operator asks.
Does this replace ServiceTitan? +
No, it makes ServiceTitan more valuable. We plug into it and run the back-office work it leaves to QuickBooks: live margin, materials, labor forecasting, and document filing. Keep every front-office workflow your team already knows.
ServiceTitan already has AI agents. How is this different? +
ServiceTitan's agents are good, especially Atlas, their new agentic AI. We differ honestly: ours learn from your shop's own approvals while theirs learns from aggregate trade data, ours stay advisory until you approve while Atlas acts on its own, and we run on your actual QuickBooks books while theirs runs on ServiceTitan's data. Then we add the back-office work it leaves manual or to QuickBooks: Financial reconciled to your ledger, Inventory, Workforce, Documents, automated Collections, and Pricebook re-costing.
Will the AI change my numbers or "hallucinate" a figure? +
It can't. Every dollar and hour is computed by deterministic, tested code. The AI only narrates and advises, the learning layer is structurally blocked from touching a figure. The math is exact and auditable; only the wording and judgment improve over time.
Can the agents take actions on their own? +
Only if you let them. Every agent ships advisory by default: it proposes, you approve. You can set each one to Off, Approve-first, or Auto, per agent, with full undo and an audit trail on every action.
Is my data safe and separate from other contractors? +
Yes. Every tenant is isolated at the database level (row-level security), credentials are encrypted, and your data never trains another shop's agents. A learned rule for your account stays in your account.
Do I own the code, and am I locked in? +
No, and you don't need to be. The platform stays ours, that's what keeps it improving every week and every shop's data isolated and secure. But your data, your configuration, and your agents' learned playbook are yours, exportable any day. If you ever leave, you keep operating instead of starting over: we migrate your data to a database you own, run it on your own API keys, or stand up a frozen local copy that keeps working from where it left off. Only the weekly learning and new agents stop. You're never held hostage.
What does the monthly cover, and why does it scale with my team? +
The monthly covers hosting, the compute the agents run on, ongoing model + safety updates, and the nightly learning that keeps your agents improving. It scales with the number of people actually using the system, so a 25-person shop (from $3,000/mo) never subsidizes a 250-person firm, and you only pay for the seats in use. It's billed off your connected field platform (ServiceTitan, Procore, or Buildertrend) and QuickBooks employee count, and your rate stays locked for as long as you stay. This quarter the one-time install is $0 (normally $8,000) for contractors who join this quarter's onboarding cohort.
What systems do you support? +
The platform is dynamic, it adapts to the system your shop already runs. The three majors are ServiceTitan (home services, the flagship, and the one whose AI agents we go head-to-head with), Buildertrend (residential builders & remodelers), and Procore (commercial construction). The same adapter layer also covers Housecall Pro, Jobber, FieldEdge, Service Fusion, Workiz, JobNimbus, and AccuLynx, one adapter layer, ten systems. Pick your system in the Command Center and the agents read from it and narrate in its language.
How fast is the install, and what do you need from me? +
Days, not months. We need your ServiceTitan app credentials and QuickBooks connection. We start in fixture/advisory mode so you see value before anything writes back, then flip on live data when you're comfortable.
Why do you onboard in quarterly cohorts? +
Every install is done hands-on by the developer, not self-serve, so we bring on a limited number of contractors each quarter. Join this quarter's cohort and the $8,000 install is $0. Your rate, the direct developer line, and 30 days of free feature requests stay locked for as long as you stay.
Want the rest? All 24 questions, answered in plain text →
Run the back-office work ServiceTitan leaves to your books.
Claim a slot in this quarter's onboarding cohort. The $8,000 install is $0 this quarter, the developer on speed-dial, and 30 days to shape the product around your shop.
Pick a time and you'll get a Google Meet invite, straight onto the developer's calendar.