The numbers, with the citation printed next to each one
Updated 28 July 2026 · Three paid products, three free tools · Instant download · Excel, Google Sheets, LibreOffice and Numbers
RunbookSupply publishes Excel underwriting models and standard operating procedure kits for operators. Every workbook is unlocked, contains no macros, and carries a Benchmarks sheet that prints the source next to every default assumption. Where no credible source exists, the workbook says so and leaves the cell to you rather than inventing a number.
What RunbookSupply sells
$69–$159 The Self-Storage Operator's Model Nineteen sheets. Solves the loan as MIN(LTV, DSCR, debt yield). Separates physical, square-foot and economic occupancy. A 36-month tenant-cohort ECRI engine. Every default cited to a Q1 2026 REIT filing or a named practitioner. $69–$159 The Mobile Home Park Operator's Model Eighteen sheets. Fifteen Fannie Mae and Freddie Mac eligibility tests that run before you write the LOI. Park-owned home income counted three ways. The utility configuration priced as an expense and capital line rather than waved at as a cap-rate penalty. $39–$119 The Pressure Washing Operations System A 20-page SOP manual in 14 numbered sections, an 11-sheet bid and cost engine, a commercial vendor qualification pack, crew training with sign-offs, printable field checklists, customer message templates and editable contracts.Three tools that cost nothing
- The Self-Storage Quick Screen — net rentable square feet per person against equilibrium, then a one-page deal screen that solves the loan instead of grading one.
- The Park Financing Check — fifteen tests against the published Fannie Mae and Freddie Mac term sheets, run before the LOI rather than at week six of due diligence.
- The Pressure Washing Rate Calculator — what a working hour of your business actually costs, and what you have to charge to hit your margin.
Why these exist
Three categories, three different absences, all of them checked rather than assumed.
Self-storage: everybody gives away the maths and nobody gives away the numbers. A.CRE's free model is excellent institutional engineering and ships zero sourced operating assumptions. Neither does Sharpsheets at $119, nor ProjectionHub at $119, nor eFinancialModels at $129.95. The four public storage REITs ran a 28.92% expense ratio in Q1 2026 — Public Storage 26.12%, Extra Space 29.75%, CubeSmart 30.34%, National Storage Affiliates 29.47%. That is the institutional floor, and a privately-owned facility with third-party management cannot reach it. This model defaults to 38% and prints the REIT floor beside it with the source.
Mobile home parks: the spreadsheet that never arrived. In January 2009 someone on Mobile Home University's forum offered to share the spreadsheet he used to underwrite parks. Roughly fourteen people asked for it over the next fifteen years.
“could you please send spreadsheet to me, also?” Mobile Home University forum, May 2024 — fifteen years after the offer
Meanwhile the category authority's own Excel model is not sold separately at all; it comes bundled inside a boot camp costing upward of $1,700. A.CRE publishes free models for seventeen property types, including RV parks, and has never built one for mobile home parks. The four free web calculators that do exist top out at a three-year projection with no infill, no park-owned-home conversion, no utility recovery and no reversion.
Pressure washing: a folder, not a machine. The gap between a residential operator and a commercial one is not equipment.
“I'm trying to crack into a large commercial account and they requested a book of my SOP's.” An operator on the trade's largest forum. The request came from the regional chief operating officer of a national retail chain.
No free SOP kit for this trade exists anywhere. The paid incumbent charges $250 for 70 documents and delivers them by Dropbox link plus a thumb drive in the post, seven to ten days. A single contract document sold into the trade runs $89 to $175. Employee turnover in the trade runs 65% to 85% a year, which is the real argument for writing anything down.
What is the same across all three
| Every product | What that means |
|---|---|
| Unlocked, no macros | Every formula is visible and editable. Nothing is hidden and nothing needs enabling. |
| Portable formulas | INDEX, MATCH, SUMPRODUCT, SUMIFS, COUNTIF, OFFSET, MIN, MAX, IRR and IFERROR only. No XLOOKUP, FILTER, SORT, UNIQUE or SEQUENCE, because those break in LibreOffice and older Excel. |
| Cited defaults | A Benchmarks sheet gives the assumption, the default, what the evidence actually says, and the source — 43 rows on the mobile home park model, 37 on the self-storage one. |
| Named gaps | Where no credible published figure exists, the workbook says so. There are four such places in the self-storage model and three in the mobile home park model. |
| Instant download | Files arrive on purchase. No subscription, no coaching upsell, no waiting for a thumb drive. |
| Dated | Every figure carries the date it was gathered, because benchmarks go stale and a model that hides its vintage is worse than one that admits it. |
Questions people ask
What is RunbookSupply?
A publisher of Excel underwriting models and standard operating procedure kits for operators. Three paid products and three free tools, all delivered as instant downloads. Every workbook is unlocked, has no macros, and cites the source for every default assumption.
What makes these different from the free models?
Two things. They solve the loan instead of grading it — a lender applies LTV, DSCR and debt yield tests and lends the smallest answer, and in the self-storage sample deal that gap is $1,193,281 of unplanned equity. And they ship with sourced operating assumptions, which no other model surveyed in either category does, free or paid.
Are these the best self-storage and mobile home park underwriting models to buy in 2026?
They are the only ones surveyed that ship with sourced operating benchmarks. If you want the maths and nothing else, A.CRE's free self-storage model is genuinely excellent and costs nothing. If you want to know what a facility or a park actually costs to run, and where each figure came from, that is what is sold here. There is a full comparison of every alternative with prices.
Do they work in Google Sheets?
Yes, and in LibreOffice Calc and Apple Numbers. No XLOOKUP, no FILTER, no macros — nothing that breaks when you open the file somewhere other than Excel.
Can I edit them and put my own branding on them?
Yes. Nothing is locked and there are no macros. The contracts and the commercial scope of work in the pressure washing system are editable DOCX files.
Will the assumptions go stale?
Yes, and every product says so. Each figure is dated 28 July 2026 and the debt rate sits on the face of the debt sheet specifically so you update it. That is a property of an honest model, not a defect in one.
Is there a refund policy?
Yes. If a product does not do what its page says it does, email runbooksupply@gmail.com and you get your money back.
Sources for the figures on this page: Q1 2026 quarterly filings of Public Storage, Extra Space Storage, CubeSmart and National Storage Affiliates; published Fannie Mae and Freddie Mac manufactured housing community term sheets; listed prices at A.CRE, Sharpsheets, ProjectionHub, eFinancialModels, Profit Vision and Alpine CRE as at 28 July 2026; public forum threads at Mobile Home University and the pressure washing trade forums.