Accounting & Bookkeeping Services

Construction Outsourced Accounting Services for Accurate Job Costing and Clean Books

Keeping accurate books for your construction business is complex, especially with job costing, change orders, and progress billing. When your financials fall behind or lack detail, it directly impacts your ability to manage projects and cash flow. LLŪM handles your day-to-day accounting with construction-specific expertise, ensuring your books are clean, your projects are tracked correctly, and your financials are always up to date.

Years in Business

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Clients Served

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$2M–$50M Revenue Range Served

Dedicated Team

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Trusted by Companies Like Yours

Why LLŪM?

Construction & Real Estate

Non-Profits

Professional Services

Manufacturing & Distribution

+ More Industries

What Our Clients Say

★★★★★

"We review timely WIP reports, updated forecasts, and accurate financials that give me complete confidence in our numbers. Those conversations have gone from stressful to strategic — we're making decisions based on real data, not gut instinct."

James R.

Owner, General Contractor — California

★★★★★

"After going through two accounting firms, we had gotten to the point of giving up. We could not find a specialized company that understood Timberline software alongside having good industry knowledge. LLŪM was a game-changer. Fast forward 2 years and we now have a reliable set of financials every month."

Sarah K.

CFO, Construction Company — Pacific Northwest

★★★★★

"At the end of 2021 my company was short-staffed and way behind in accounting. I do not exaggerate when I say I would not have made it through this last year without LLŪM. Laurie was so knowledgeable, attentive, and patient. I would highly recommend them to anyone with accounting needs."

Maria C.

CEO, Professional Services Firm

Software We Work With

How We Help

LLŪM supports a wide range of construction businesses, each with unique financial and operational demands. Our outsourced accounting and bookkeeping experience includes:

Transaction Coding & Reconciliation
General Ledger Management
Month-End Close & Financial Reporting
Job Cost Data Entry & Maintenance
WIP Schedule Preparation
Progress Billing Support (AIA)
Payroll Entry & Labor Cost Allocation
Retainage Accounting & Tracking

While every contractor operates differently, the core challenges are often the same—disorganized books, inconsistent reporting, and limited visibility into job performance. We bring clean processes and reliable financial data so you can operate with confidence.

Your Pain Points. Our Solutions.

✕ Pain Point

✓ LLŪM Resolution

Books are messy or outdated

→ Clean up and maintain accurate, up-to-date financials

Job costs are not tracked properly

→ Implement and manage job costing by project

WIP reporting is missing or wrong

→ Maintain accurate WIP schedules monthly

Invoices go out late

→ Enforce consistent billing and progress invoicing

Cash flow issues from poor AR/AP management

→ Manage receivables, payables, and cash timing

Change orders are missed or unbilled

→ Track and ensure all change orders are recorded and invoiced

Payroll and job allocations are inconsistent

→ Properly allocate labor costs to each job

Financial reports lack detail    
→ Deliver clear P&L by job, project, and company    

Systems don’t talk to each other

→ Integrate tools (QuickBooks, Buildertrend, etc.)

Owner spends too much time on books

→ Fully manage day-to-day accounting operations

Sound like your business? Let’s talk about what LLŪM can do for you.

We're Selective About Who We Work With

We believe the best partnerships start with honesty. Here’s exactly who we serve best — and who might be a better fit elsewhere.

✓ Great Fit

We Work Best With Companies That...

Have revenues between $2M and $50M
Need reliable, consistent accounting without building an in-house team
Have messy or outdated books that need cleanup and structure
Struggle with accurate job costing, WIP tracking, or financial visibility
Want timely, accurate financial reports they can actually use
Need help managing payables, receivables, and cash flow day-to-day
Are growing and need scalable accounting processes
Value clean systems, consistency, and attention to detail

✕ Not a Fit

We're Probably Not the Right Partner If...

You only need occasional or one-off bookkeeping help
You prefer to handle all accounting internally
You’re not open to improving processes or standardizing your books
You’re only looking for minimal data entry without reporting or structure
You don’t require regular financial visibility or accuracy

Not sure? Schedule a 20-minute discovery call — we’ll tell you honestly whether we’re the right fit before any commitment.

Our Proven Onboarding Process

1 Discovery Call

We learn your business, software, and accounting needs — and confirm we’re the right fit.

2 LLŪM Diagnostic

A financial review of your books, WIP, and workflows — fully credited to onboarding.

3 Custom Proposal

A written scope of services tailored to your size, software, and goals — no surprises.

4 Dedicated Team Assigned

Your Controller, Staff Accountants, and CFO advisor are introduced and ready to start.

The People Behind Your Numbers

Justin Atneyel

President

Leads client service delivery, operations, and national growth. Former CFO for a manufacturing & engineering firm.

Claudine D.

Director of Operations

Oversees day-to-day operations and ensures client and employee satisfaction across all engagements.

Kimberly Hiatt

Director of Partner Engagement

Guides prospective and ongoing clients through the sales and onboarding process.

More team members
on llum.com/team/

Meet the Full Team

Controllers, CPAs & Accountants

All hired as full-time LLÜM employees — not contractors. Your dedicated team, ready from day one.

Focus on Your Mission. We’ll Handle the Numbers.

Start with a no-pressure discovery call. We’ll review your current situation and tell you exactly how we can help — or point you in the right direction if we’re not the right fit.