General contractor software

Custom Software for General Contractors

Join.To.IT builds software for general contractors who coordinate many trades on one programme: subcontractor scheduling, budget and change order control, submittals and RFIs, and the document trail that protects you when a dispute arrives.

Project controls Programme status
Live
Active projects 9 3 phases each
Open RFIs 24 5 overdue
Change orders 12 €340k pending
01
Mechanical rough-in Two subs on site
On schedule
02
Change order #34 Owner approval
Review
03
Steel submittal Awaiting architect
Waiting
GC software solutions we build

Coordination across trades, budgets, and documents

A general contractor manages other companies more than a single crew. Subcontractor schedules shift, RFIs wait on designers, change orders move faster than the budget updates, and the document trail lives across email, shared drives, and a project management product that does not match how you buy out work.

We build systems that hold the programme together: trade schedules with dependencies, committed versus actual cost, structured RFI and submittal flows, and daily reports from site that feed the same record used in owner reporting and closeout.

01 Bid
02 Buyout
03 Schedule
04 Site progress
05 Change control
06 Closeout
Software modules

Project controls built around multi-trade delivery

Start with the control that costs you money when it slips — usually change orders or subcontractor scheduling — and extend from there.

01

Subcontractor coordination

Manage the companies doing the work: scope, contracts, insurance status, schedule commitments, and performance history.

  • Subcontractor directory and scope
  • Contract and buyout tracking
  • Insurance and document expiry alerts
  • Schedule commitments per trade
  • Performance history across projects
02

Multi-trade scheduling

Programme schedules with dependencies between trades, so a slip in one package shows its downstream effect immediately.

  • Phase and trade-level scheduling
  • Dependency and lookahead views
  • Constraint and blocker tracking
  • Manpower planning per trade
  • Schedule versus actual comparison
03

Budget and cost control

Committed cost, actual cost, and forecast against the original budget, visible before the month-end report.

  • Budget breakdown by cost code
  • Commitment and invoice tracking
  • Forecast to complete
  • Variance alerts
  • Owner and internal cost reporting
04

Change orders and variations

A structured path from site instruction to priced variation to approval, with the evidence attached to each step.

  • Change request capture from site
  • Pricing and markup rules
  • Owner approval workflow
  • Impact on budget and schedule
  • Complete variation audit trail
05

RFIs, submittals, and documents

The formal document flow with designers and owners, tracked by due date rather than buried in an inbox.

  • RFI logging and response tracking
  • Submittal and approval cycles
  • Drawing revision control
  • Overdue item escalation
  • Searchable project document archive
06

Site reporting and quality

Daily reports, inspections, snag lists, and safety records captured on site rather than typed up afterwards.

  • Daily reports with photos
  • Manpower and weather logging
  • Inspection and checklist forms
  • Snag and punch list tracking
  • Closeout documentation packs
AI for general contractors

Construction documents are where the hours go

A general contractor handles contracts, drawings, specifications, RFIs, and daily reports on every project. AI is most useful reading that volume, finding the relevant clause or detail, and drafting the routine correspondence your project managers write every week.

Our Join.To.IT AI development team connects these capabilities to your project documents, cost data, and correspondence history.

Specification and contract search

Ask questions across specifications, contracts, and drawings, with answers cited back to the exact document and section.

RFI and correspondence drafting

Draft RFIs and responses from site notes and referenced documents for the project manager to review and issue.

Submittal review support

Compare submitted data against specification requirements and flag discrepancies for a human reviewer to confirm.

Daily report summarisation

Turn site notes and photos into structured daily reports and weekly owner updates without manual rewriting.

Change impact analysis

Summarise the cost and schedule implications of a proposed variation from your own project data.

GC integrations

Connect project controls to accounting and design tools

General contractors run accounting, estimating, and design coordination in separate systems. We integrate accounting and ERP platforms, estimating tools, drawing and BIM viewers, document storage, e-signature providers, and payroll or timesheet systems.

Cost codes, commitments, and invoices stay aligned between project controls and finance, so your monthly reporting stops depending on manual reconciliation.

Accounting and ERP systems Estimating software Drawing and BIM viewers Document storage E-signature providers Timesheet and payroll systems Supplier and procurement portals Scheduling tools BI and reporting tools
Why custom software

Why general contractors build their own controls

Construction management products are built around a standard project delivery model. General contractors differentiate on how they buy out work, control change, and report to owners, which is exactly where a fixed product forces compromise.

Buyout process is your margin

How you package scope, price subcontracts, and hold commitments is commercial logic, not a configuration option.

Cost codes differ by company

Your cost structure and reporting breakdown rarely match a vendor default, and mapping between them loses accuracy.

Change control decides profitability

Variations priced late or approved informally are the most common source of disputed cost at the end of a project.

Owners expect your reporting

Client reporting formats are part of how you win repeat work and should not be limited by a vendor template.

Per-user pricing limits adoption

When subcontractors and site staff cost extra per seat, the people with the information stop using the system.

Our development process

From project controls to a working system

The same Join.To.IT delivery process, applied to subcontractor coordination, cost control, and site reporting.

01

Business analysis

Review how you bid, buy out, schedule, control change, and close out projects, including the spreadsheets doing the real work.

02

Solution design

Define the data model for projects, cost codes, commitments, and documents, plus integration with accounting and estimating.

03

UI/UX design

Design interfaces for project managers, site teams, and owners, keeping site capture fast enough to happen the same day.

04

Development

Build project controls in increments, usually starting with change orders or subcontractor scheduling.

05

Quality assurance

Test cost roll-ups, approval routing, document versioning, and offline capture in site conditions.

06

Launch & support

Roll out on one project first, then extend across the portfolio and refine reporting with real cost data.

Technologies we use

Web, mobile, cloud, and AI stack for project controls

We choose technologies based on project volume, your accounting platform, and how much capture happens on site rather than in the office.

Frontend ReactNext.jsVueTypeScript
Backend Node.jsPythonLaravel
Mobile React NativeiOSAndroid
Cloud AWSGoogle CloudDocker
AI OpenAIClaudeGeminiRAGVector databases
Integrations Accounting and ERP APIsEstimating tool exportsDocument storage APIsE-signature providers
FAQ

General contractor software questions

Practical answers for GC owners, project directors, and commercial managers.

How much does general contractor software development cost?
It depends on how much of the project control cycle the system covers. A change order and RFI module is a contained build; full cost control with subcontractor management, scheduling, and site reporting is larger. We scope after discovery and price against a defined feature set rather than per seat.
Can subcontractors access the system?
Yes, through limited-access portals showing only their scope, schedule commitments, documents, and submissions. Because you own the software, adding subcontractor users does not increase licence costs, which is usually what determines whether they actually use it.
Can you integrate with our accounting system?
Yes, and it is normally essential. We connect cost codes, commitments, and invoices so project controls and finance agree without manual reconciliation. The integration depth depends on what your accounting platform exposes, which we confirm during discovery.
How is this different from your construction page?
The construction page covers the category including estimating, CRM, and field service across trades. This page focuses on general contracting specifically: coordinating multiple subcontractors, controlling budget and change across a programme, and managing the formal document flow with designers and owners.
Does it work on site with poor connectivity?
Yes. Daily reports, inspections, and photo capture are designed to work offline and sync when the device reconnects. Site data that has to wait for an office computer usually gets recorded late or not at all, which defeats the purpose of capturing it.
How long does it take to build?
A focused module such as change order control can often be in use within a few months of discovery. A full project controls platform takes longer because cost structures and accounting integration need care. We usually deliver on a live project so feedback comes from real use.
Software for general contractors

Build project controls around how you deliver work

Whether you need subcontractor coordination, multi-trade scheduling, budget and change order control, RFI and submittal workflows, or AI that reads your project documents, Join.To.IT can help you build it.