Bookkeeping for Construction, Architecture and Engineering Firms

Project-based businesses don’t run on a simple monthly P&L the way most small businesses do. A construction firm, architecture practice, or engineering company needs to know whether each individual job is actually profitable, not just whether the business as a whole made money this month. Generic bookkeeping misses this entirely, and it’s one of the most common reasons project-based businesses discover a job lost money only after it’s already finished.

With 30 years of bookkeeping experience and deep expertise in the construction sector, we build financial systems designed around how project-based businesses actually operate.

Why Project-Based Businesses Need Specialized Bookkeeping

A general contractor, architecture firm, or engineering practice lives and dies by job-level profitability, not overall revenue. Two jobs can bring in the same total revenue and have completely different outcomes once labor, materials, subcontractors, and overhead are properly allocated to each one. Without job costing built into your books, you’re making bidding and staffing decisions based on incomplete information, and you often don’t find out a job underperformed until long after there was any chance to correct course.

What We Track For You

Job Costing

Every job gets its own profitability picture, with labor, materials, subcontractor costs, and equipment usage tracked against that specific job’s revenue. This is the foundation of everything else: it tells you which types of projects, clients, or project managers are actually generating margin, and which ones are quietly eating into it.

Work-in-Progress (WIP) Reporting

For jobs that span multiple months, we build WIP schedules that show the true financial position of each active project, including costs incurred to date, billings to date, and estimated costs to complete, so you always know where a job stands, not just what’s been invoiced so far.

Percentage-of-Completion Accounting

Long-duration projects need revenue recognized as the work is actually completed, not just when an invoice goes out. We set this up correctly so your financials reflect real progress and profitability, which matters both for your own decision-making and for bonding and lending requirements.

Retainage Tracking

Retainage held by clients (and retainage you hold from subcontractors) needs to be tracked separately from regular receivables and payables. It’s real money, just on a delayed timeline, and it needs to be visible in your cash flow planning rather than buried in a general AR balance.

Change Order Management

Change orders shift both the scope and the economics of a job mid-stream. We make sure approved change orders are reflected in job costing and billing in real time, so a job’s profitability picture stays accurate as the scope evolves, instead of getting revealed as a surprise at closeout.

Overhead Allocation

Office staff, equipment depreciation, insurance, and other overhead need to be allocated across jobs in a way that reflects reality, not an arbitrary flat percentage. Proper allocation is what makes job costing meaningful instead of misleading.

Progress Billing and Subcontractor Compliance

We manage progress billing schedules aligned to project milestones, and keep subcontractor documentation such as W-9s, certificates of insurance, and lien waivers current and organized, so payment and compliance never become the bottleneck on a job.

Full-Service Bookkeeping for Project-Based Businesses

  • QuickBooks setup built around job costing and project-based accounting
  • Job-level profitability tracking, updated monthly
  • WIP schedules and percentage-of-completion reporting
  • Progress billing and retainage management
  • Payroll, including certified payroll and prevailing wage compliance where applicable
  • Subcontractor payables, 1099s, and compliance documentation
  • Cash flow planning around project timelines and retainage
  • Catch-up bookkeeping if your books have fallen behind
  • Reporting built for bonding, lending, and owner decision-making

Why Work With Us

We don’t just close out your books at month-end and move on. We help you understand which jobs, clients, and project types are actually building your business, and which ones are quietly draining it. For firms in construction, architecture, and engineering, that means finally having real answers to questions like: Which of my current jobs is actually profitable right now? Am I bidding this type of project correctly? Is my overhead properly reflected in my job costs?

Thirty years of bookkeeping experience, with deep focus in the construction sector alongside service and restaurant businesses, means we understand the specific financial rhythms of project-based work, not just general small business accounting applied loosely to your industry.

Want a clearer picture of which jobs are actually making you money? Reach out to talk about what a project-based bookkeeping system could look like for your firm.