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Bids, jobs, subs, and invoices on one system that fits how you build.

Customers, Sales, Tasks, Purchasing, Inventory, Finance, Portals, and Email around the accounting and drive you keep, with an agent that estimates from the plans, writes up change orders, checks sub invoices against the PO, and drafts the client update, under your approvals.

ForGeneral contractorsSpecialty subcontractorsRemodelersSolar & energy installers
Hoursto a first estimate drafted from the plans, with your unit costs and markups
Every changewritten up with cost and schedule impact, signed by the client, and filed on the job
1 portalper client, with schedule, photos, approvals, and invoices

Opser apps around the systems you keep.

Before
Estimating spreadsheetBids
Email + PDF plansOrders, drawings
WhatsApp site groupsSite
Paper daily logsProgress
Shared driveDocuments
AccountingInvoices
After
Opser
  • Customers
  • Estimates & Bids
  • Tasks
  • Purchasing
  • Inventory
  • Finance
  • Portals
  • Email
  • + the workflows you describe
Connected, not replaced
AccountingLedger, payroll
Plans on a driveDrawings
Estimating toolTake-offs

The margin is decided in the bid and lost in the paperwork nobody has time for.

A contractor's week is take-offs in a spreadsheet the night before the bid is due, changes agreed verbally on site, sub invoices checked by hand against contracts, and a client who calls the PM five times a day for status. Every piece of it is paperwork, and every piece of it is where margin leaks.

Construction platforms are priced for the biggest GCs and take a year to roll out. Opser starts from your estimate, your jobs, your subs, and your clients, and puts the paperwork on an agent so the PM can stay on site.

From the bid to the final invoice, without the paperwork.

Each one is a job your team does today by hand across several tools. On Opser one agent does it across the apps below and the systems you keep, and you approve.

01

Opportunity → estimate/bid → job

  1. Customers
  2. Finance
  3. Tasks
Before

Take-offs in a spreadsheet, unit costs from the last job, and a bid assembled the night before it's due.

With Opser

The agent reads the plans and specs, drafts the scope and quantities, applies your unit costs and markups, builds the bid as a quote in Finance, and opens the job in Tasks with its tasks and due dates when it's won.

Draft the estimate for the Via Roma renovation from these plans, with our standard markups.

02

Change orders that get approved, not argued

  1. Email
  2. Documents
  3. Sign
  4. Tasks
Before

Changes happen verbally on site and show up as a dispute at the final invoice.

With Opser

The agent writes up the change order as a document from the site note or email, with cost and schedule impact, sends it to the client for signature, and adds it to the job with the signed copy attached.

Write up the change order for the extra outlets on site 3.

03

Sub invoices checked against the PO

  1. Email
  2. Purchasing
  3. Tasks
Before

Sub invoices arrive by email. Someone checks them against the contract and progress by hand.

With Opser

The agent reads each sub invoice from email, compares it with the PO in Purchasing and the job's progress in Tasks, and flags anything billed ahead of the work. You decide what gets paid.

Check this week's sub invoices against their POs and flag anything off.

04

Materials tracked to the job

  1. Tasks
  2. Inventory
  3. Purchasing
Before

Material is ordered from memory and equipment is wherever it was last seen.

With Opser

The agent drafts the material POs from the job's tasks and due dates, tracks what's in the yard, on site, and on order, and flags what's short before the crew arrives.

What do we need on site 3 next week, and what's not ordered yet?

05

Clients who know what's happening, and invoices that follow the job

  1. Tasks
  2. Portals
  3. Finance
Before

"What's the status?" calls interrupt the PM five times a day; the invoice waits for someone to assemble it.

With Opser

The portal shows schedule, photos, approvals, and invoices. The agent drafts the weekly update from the job's tasks, comments, and photos, and the month's invoice in Finance from the work completed.

Draft this week's client update for the Bianchi job and the progress invoice for August.

The apps for your day-to-day.

Connected in one workspace, configured for your industry. Explore each app, then add the workflows that make it yours.

And the part that's only yours.

Daily logs, job costing, RFIs and submittals, lien waivers, safety checklists, equipment tracking, progress billing in your format. Describe it and it's built into your system.

Build your app

Start with a request like this

Add progress billing: per job, per period, percent complete by line against the schedule of values, as a PDF the client signs in the portal.

The agent does the paperwork, so the PM stays on site and the margin stays in the job.

Because estimates, jobs, change orders, subs, and clients live in one system, the agent can draft the bid from the plans, write up the change from a site note, check the sub invoice, and brief the client, under your approval.

  • Drafts the estimate from the plans and specs with your unit costs and markups
  • Writes up change orders from site notes and emails, with cost and schedule impact, and sends them for signature
  • Checks sub invoices against the PO and the job's progress and flags overbilling
  • Turns the foreman's message and photos into updates on the job's tasks
  • Drafts the weekly client update from the job's tasks and comments
  • Answers "what's still open on Bianchi?" from the job itself

Every person gets their own agent; teams can share one. Sensitive actions wait for approval, and every action is logged with the data it used and the outcome.

Bids in hours, changes that get paid, subs that get checked, clients that stop calling.

  • A first estimate in hours from the plans, with your unit costs, not a night in a spreadsheet
  • Every change is written up and signed by the client before the work starts
  • Sub invoices are checked against the PO and the work done before they're paid
  • Site updates land on the job's tasks from a message, and the client update writes itself from them
  • Clients see schedule, photos, and approvals in a portal; the PM's phone goes quiet

What teams in your industry ask.

Our foremen won't type into a system.
They don't have to. A photo or a short message to the agent is enough; the agent updates the job's tasks, drafts the change order, and files the photos to the job.
Can it do progress billing and AIA-style forms?
Yes. Progress billing against a schedule of values, retainage, and your client's required form are things you describe; they're built into your system and signed in the portal.

Bring one job from bid to invoice.

Start for free and take it through Opser: estimate, change orders, subs, and the client portal. Or book a demo and we'll walk it with you.