Rental Property logo

Rental Property

Organization
openaccountant
rental-property

Track rental income, expenses, ROI, and cap rate per property.

Overview

Publisheropenaccountant
Repositoryskills
Skill namerental-property
Stars
106
Forks
18
Bundled files
Instructions only
LicenseMIT
Links
  • Markdown instructions

    A SKILL.md file the model loads on demand, so it only costs tokens when a request actually matches.

  • Works with any LLM

    AI skills are plain Markdown, not provider-specific code, so this works with GPT, Claude, Gemini, Grok, or a local model.

  • Self-contained

    Everything the model needs lives in the instructions — no extra files to sync.

  • Open source

    Published by openaccountant on GitHub. Read the source before you install it.

Installation

Install the Rental Property AI skill in TypingMind to use it with any LLM, or drop it into another agent that reads SKILL.md.

1

Install in TypingMind

TypingMind installs a skill straight from its GitHub folder — it reads SKILL.md, bundles the resource files, and stores the result locally.

  1. Open the app and go to Plugins → Skills.
  2. Choose "Install from GitHub".
  3. Paste the skill folder URL below and confirm.
    https://github.com/openaccountant/skills/tree/main/business/rental-property
  4. Enable the skill in any chat where you want it available.
Plugins → Skills → Add skill → From GitHub URL, then paste the folder URL and press Continue.
2

Install in another agent

Any agent that reads the Agent Skills format can use this skill — copy the folder into that agent's skills directory.

Claude Code — .claude/skills
git clone --depth 1 https://github.com/openaccountant/skills.git /tmp/skills
mkdir -p .claude/skills
cp -r /tmp/skills/business/rental-property .claude/skills/rental-property
Restart Claude Code after copying so it picks up the new skill.

Use it in TypingMind

Enable Rental Property in any TypingMind chat and the model takes it from there. Its name and description sit in the system prompt, and the moment a request matches, the model loads the full instructions itself — you never invoke it by hand, and it costs no tokens until it is actually used.

The model loads Rental Property on its own as soon as a request matches it.

Works with any AI model

AI skills are plain Markdown instructions rather than provider-specific code, so Rental Property is not tied to the model it was written for. Install it once in TypingMind and use it with GPT-5, Claude, Gemini, Grok, DeepSeek, Mistral, Llama, or a local model you run yourself — all on your own API keys.

  • Loaded only when it is needed

    The system prompt carries just the name and description. The instructions are fetched on the first matching request, so an idle skill costs nothing.

  • Switch models mid-chat

    Because the skill is instructions rather than code, changing model does not break it — the next model reads the same SKILL.md.

Skill instructions

This is the SKILL.md content the model loads. Read it before installing — a skill is instructions your model will follow.

Rental Property Analysis

Overview

Calculate key rental property metrics: net operating income (NOI), cash-on-cash return, cap rate, and ROI per property. Tracks rental income against property-specific expenses for Schedule E tax preparation.

Wilson Tools Used

  • transaction_search — find all income and expenses related to a specific property by vendor, description, or tag
  • spending_summary — aggregate property expenses by category (mortgage, insurance, repairs, management fees)
  • export_transactions — export property-specific transactions for tax filing (Schedule E)

Workflow

  1. Ask for the property (address or name), purchase price, down payment, and current market value. If multiple properties, repeat for each.
  2. Use transaction_search to find all rental income for the property (tenant payments, security deposits).
  3. Use transaction_search to find all property expenses (mortgage, insurance, property tax, HOA, repairs, management fees, utilities paid by owner).
  4. Use spending_summary to aggregate expenses by category for the property.
  5. Calculate key metrics:
RENTAL PROPERTY ANALYSIS — [Property Name]
══════════════════════════════════════════════════════
Property: 123 Main St, Unit A
Purchase Price: $250,000   Down Payment: $50,000
Current Value: $275,000    Loan Balance: $192,000

ANNUAL INCOME & EXPENSES — [Year]
──────────────────────────────────────────────────────
Gross Rental Income                          $24,000
  Vacancy Loss (est. 5%)                    ($1,200)
Effective Gross Income                       $22,800

Operating Expenses
  Property Tax                              ($3,000)
  Insurance                                 ($1,200)
  Property Management (10%)                 ($2,400)
  Repairs & Maintenance                     ($1,800)
  HOA Fees                                  ($2,400)
  Total Operating Expenses                 ($10,800)

NET OPERATING INCOME (NOI)                   $12,000
  Mortgage Payment (P&I)                   ($11,520)

CASH FLOW (after debt service)                  $480

KEY METRICS
  Cap Rate          = NOI / Purchase Price  =  4.8%
  Cash-on-Cash ROI  = Cash Flow / Down Pmt  =  1.0%
  Total ROI         = (Cash Flow + Equity +
                       Appreciation) / Down  = 18.2%
  Expense Ratio     = OpEx / Gross Income   = 45.0%
  1% Rule Check     = Rent / Price          =  0.8%
══════════════════════════════════════════════════════
  1. For total ROI, include:
    • Annual cash flow: $480
    • Equity buildup from mortgage principal paydown (check amortization schedule)
    • Appreciation: (Current Value - Purchase Price) / Years Owned, annualized
    • Total ROI = (Cash Flow + Annual Equity Gain + Annual Appreciation) / Total Cash Invested * 100
  2. Use export_transactions for property-specific transactions to prepare Schedule E.

Without Wilson

  1. Export bank transactions from the account used for the rental property.
  2. In a spreadsheet, filter to only property-related transactions. Tag each with the property name if you own multiple.
  3. Sum rental income (positive deposits from tenants).
  4. Sum operating expenses by category. Common Schedule E categories: advertising, auto/travel, cleaning/maintenance, commissions, insurance, legal/professional, management fees, mortgage interest, repairs, supplies, taxes, utilities.
  5. NOI = Gross Rent - Vacancy Allowance - Operating Expenses.
  6. Cap Rate = =NOI/PurchasePrice*100.
  7. Cash-on-Cash = =(NOI - AnnualMortgagePayments)/DownPayment*100.
  8. For the mortgage principal paydown, check your loan amortization schedule (available from your lender's portal or use bankrate.com/calculators/mortgages/amortization-calculator).
  9. For Schedule E filing: IRS Form Schedule E lines map to specific expense categories. Use TurboTax Rental Properties or FreeTaxUSA for guided entry. Depreciation is calculated as Purchase Price (minus land value) / 27.5 years for residential.

Important Notes

  • Cap rate does not include mortgage payments — it measures the property's return independent of financing. Use it to compare properties.
  • Cash-on-cash ROI includes financing and measures return on your actual cash invested. It can be negative if mortgage payments exceed NOI.
  • The 1% rule (monthly rent should be >= 1% of purchase price) is a quick screening heuristic, not a hard rule. Many profitable properties do not meet it, especially in high-cost markets.
  • Depreciation is a non-cash expense that reduces taxable income but not actual cash flow. Residential rental property depreciates over 27.5 years. This is a significant tax benefit not reflected in the cash flow numbers above.
  • Track capital improvements separately from repairs. Repairs are expensed immediately; improvements (new roof, HVAC) are depreciated over their useful life.

Frequently asked questions

What does the Rental Property AI skill do?

Track rental income, expenses, ROI, and cap rate per property.

Why use Rental Property on TypingMind?

Because you install it once and use it with any model. Rental Property is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Rental Property in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/openaccountant/skills/tree/main/business/rental-property. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Rental Property?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Rental Property?

As many as you like. As long as a model supports skills, you can use Rental Property with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Rental Property AI skill free?

Yes. It is published on GitHub by openaccountant under the MIT license. You only pay your own AI provider for the tokens you use.

What are AI skills?

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

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