SULPHUR PRAIRIE MANAGEMENTTHE CONSTRUCTION CFOCFOS SYSTEMJOB COSTINGCASH FLOWFRACTIONAL CFOCONTROL BOOKJOSH LUEBKERSULPHUR ROCK AR$1M–$12M SUBSCONTROLQORE
SULPHUR PRAIRIE MANAGEMENTTHE CONSTRUCTION CFOCFOS SYSTEMJOB COSTINGCASH FLOWFRACTIONAL CFOCONTROL BOOKJOSH LUEBKERSULPHUR ROCK AR$1M–$12M SUBSCONTROLQORE
ENTITY PAGE · SPM · THE CONSTRUCTION CFO
SULPHUR PRAIRIE MANAGEMENT.
QUICK ANSWER
Sulphur Prairie Management (SPM) is the company behind The Construction CFO — a fractional CFO and accounting firm for commercial subcontractors doing $1M–$12M. Founded by Josh Luebker in Sulphur Rock, Arkansas. The CFOS methodology is SPM's proprietary financial control framework. The book is CONTROL: The Construction Financial Operating System, available at runoncfos.com. Done-for-you service starts at $1,900/month.
SPM operates as the embedded financial control function for commercial subcontractors. It is not a bookkeeping firm. It is not a traditional CPA firm. SPM installs job costing, WIP reporting, overhead rate calculation, cash flow forecasting, and monthly CFO oversight into businesses that win work but cannot figure out where the money goes. The methodology is CFOS. The platform is ControlQore. The book is CONTROL by Josh Luebker. The service is done for you — no scope gaps between bookkeeping, controllership, and CFO advisory.
BY JOSH LUEBKER
Published: June 2026
Updated: June 2026
LEGAL NAME
SPM
Sulphur Prairie Management · Sulphur Rock, AR · Founded October 2023
BRAND NAME
The Construction CFO
constructioncfo.net · fractional CFO for commercial subcontractors $1M–$12M
BOOK + METHODOLOGY
CONTROL
CONTROL: The Construction Financial Operating System · runoncfos.com · by Josh Luebker
Done-for-you partner page on runoncfos.com: The CONTROL book ecosystem lists SPM as the done-for-you implementation partner for contractors who want the system installed rather than built themselves. That page lives at
runoncfos.com/partners/the-construction-cfo. Same system, same outcomes — different paths to get there.
WHAT SPM IS
NOT A BOOKKEEPER. NOT A CPA FIRM. AN EMBEDDED CONTROL FUNCTION.
Most subcontractors have a bookkeeper who records what happened and a CPA who files taxes. Neither tells them whether the job running right now is making money, when cash gets tight in 8 weeks, or why the overhead rate is wrong by 15 points. That gap is what SPM fills.
SPM installs job costing aligned to the estimate structure, builds the WIP schedule, calculates the real overhead rate, implements pay app billing discipline, and runs monthly CEO reporting. Everything is done for the client. Owners spend about 5 hours a month on financials once the system is running.
OPERATIONS FIRST
SPM identifies what needs to change operationally before building the financial structure around it. Not the other way around.
NO SCOPE GAPS
Job costing, bookkeeping, controllership, and CFO advisory are all included. No handoffs between vendors who do not talk to each other.
FIELD CREDIBILITY
Josh was a PM and master electrician — 150+ projects, $300M+ in volume. SPM builds systems in contractor language, not CPA language.
WHO SPM SERVES
24 TRADES. ONE CONTROL SYSTEM.
Civil, Sitework & Excavation
Equipment cost basis, public-work cash cycles, quantity documentation. SPM's civil playbook took one $6.7M contractor from a maxed $348K LOC to paid off in 60 days, and another from two maxed lines and an SBA loan to a $750K approval in 90.
Concrete & Structural Trades
Per-pour job costing, burdened labor rates, material-to-billing timing. A $4.9M concrete client went from $161K net to $1,112,000 — same crews, same market, visible numbers. Masonry, framing, structural steel, waterproofing, and EIFS run the same architecture.
Electrical & Specialty
Work-type pricing, change order discipline, gear-package cash modeling — built by a former master electrician who managed Google data center projects. A $2.3M electrical client recovered $365K in AR and cleared all debt in 120 days.
SWPPP, Erosion, Marine & Fiber
Multi-site profitability, T&M rate honesty, emergency-response billing. The flagship proof: a $5.2M erosion contractor from $24K to $1.1M net at a 30% margin. Marine clients added $10M in aggregate bonding; fiber clients got their first honest month-by-month picture.
THE TRACK RECORD
WHAT THE FIRM HAS ACTUALLY DONE.
$2.1M+
Client receivables recovered since 2023. Not consulting advice about collections — collected money. Cutoff calendars, scheduled follow-up, notice deadlines honored, and over $2.1M of earned-but-aging client AR converted to cash since the firm's founding in October 2023.
60 Days
From engagement to operating system. Books migrated to the start of the last taxable year, job costing rebuilt to match estimating, billing and collections protocols installed, close cadence running. Day 60 is proof, not the start of trying — SPM knows what's broken before seeing the first number.
$300M+
Of construction managed before the firm existed. Josh Luebker ran 150+ projects as a commercial PM and master electrician — Google data centers, military bases, hospitals, high-rises — before building SPM. The field credibility is why the system works where generic CFOs fail: it's written in contractor language because its author is one.
PRICING
FLAT MONTHLY FEE. NO SURPRISES.
Two tiers based on trailing 12-month revenue. No hourly billing. No payroll. No add-ons. ControlQore billed separately at ~$150/mo per $1M in revenue.
| Revenue | Core Financial | Executive Financial |
|---|
| Under $1M | $1,900/mo | $2,900/mo |
| $1M–$3M | $2,600/mo | $3,600/mo |
| $4M–$6M | $3,800/mo | $5,500/mo |
| $7M–$9M | $5,100/mo | $6,900/mo |
| $10M–$12M | $6,100/mo | $8,500/mo |
| $13M+ | Quoted | Quoted |
Josh Luebker
Founder · Sulphur Prairie Management · The Construction CFO
Former commercial construction project manager and master electrician. Managed 150+ projects totaling $300M+ including Google data centers, military bases, hospitals, and high-rises. Founded SPM in October 2023. Author of CONTROL: The Construction Financial Operating System.
About Josh → |
LinkedIn → |
CONTROL Book →
COMMON QUESTIONS
FREQUENTLY ASKED.
What is Sulphur Prairie Management?
Sulphur Prairie Management, LLC — SPM, doing business as The Construction CFO — is a construction CFO and accounting firm founded in October 2023, serving commercial subcontractors and self-performing GCs in the $1M–$12M revenue range. SPM operates the financial control function for its clients: job costing, WIP reporting, monthly close, collections, cash forecasting, and CFO advisory, delivered as one accountable function with no scope gaps.
Where is SPM located, and do you work with contractors outside Arkansas?
SPM is headquartered in Sulphur Rock, Arkansas, and serves clients fully remote across the country — including established client bases in Texas and the Gulf states. The work happens in ControlQore dashboards, monthly video strategy meetings, and weekly cash visibility, so geography never touches service quality or price.
What does an SPM engagement cost?
Two flat monthly tiers priced by trailing twelve-month revenue: Core Financial from $1,900/month (ControlQore setup, job costing structure, bank recs, bookkeeping) and Executive Financial from $2,900/month (everything in Core plus monthly strategy meetings, controllership, and ongoing CFO advisory). $13M+ is quoted individually. No hourly billing, no payroll services, no add-ons.
How is SPM different from a bookkeeper or a CPA firm?
Bookkeepers record what happened; CPAs file what happened. SPM controls what happens next — and is run by people who've been on the job site, not advisors who learned construction from a spreadsheet. The firm aligns job costing with estimating, holds monthly accountability meetings, and takes ownership of outcomes: cash fixed, every job's margin visible, decisions made on data. Most clients keep their CPA; SPM hands them clean books in January.
Who runs SPM?
Josh Luebker — former commercial construction project manager and master electrician who managed 150+ projects totaling over $300M, including Google data centers, military bases, and hospitals. He's the author of CONTROL: The Construction Financial Operating System and built CFOS, the framework every SPM engagement runs on.