ThinkPlumb

Construction accounting carries quirks that generic bookkeeping firms routinely mishandle: work-in-progress schedules, over- and under-billings, job cost tracking by project phase, and monthly close cycles tied to contract performance. LLUM, operating under the parent brand Thinkplumb, was founded by operators with direct construction and real estate CFO backgrounds and has built its entire service model around those specific demands. The firm offers outsourced accounting across four tiers, from transactional bookkeeping through fractional CFO engagements, all delivered remotely to construction and built-environment businesses across all 50 US states.

For a family office with direct operating investments in construction, real estate development, or specialty contracting, LLUM functions as an outsourced finance department rather than a software vendor. Engagements begin with a fixed-fee diagnostic review called the Blueprint Review, which assesses existing systems, team structure, and financial processes before any ongoing work begins. Services delivered include:

• Monthly WIP reporting and job cost analysis
• Controller-level oversight and month-end close management
• AP/AR processing, payroll, and reconciliations
• Cash flow forecasting and P&L reporting by project
• Fractional CFO support for strategic planning and banking relationships

The firm carries experience across construction-specific platforms including Sage 300 CRE, Sage 100 Contractor, Foundation Software, Procore, Buildertrend, NetSuite, and Acumatica, which matters when a portfolio company is mid-implementation or needs a system migration managed without hiring a permanent controller. Pricing is not publicly disclosed, and the service is US-focused with no indication of cross-border or multi-currency capability. For family offices whose operating companies sit outside the construction and built-environment sector, LLUM’s deep vertical specialisation becomes a constraint rather than an advantage.