# Little Book of Renting

> Little Book of Renting is a calculator-and-guide website for renters who want to understand rental costs, fees, concessions, move-in cash, and rental decision math before making a commitment.

Canonical site: https://littlebookofrenting.com

Last updated: 2026-06-10

## Purpose

Little Book of Renting provides practical calculators and plain-English guides. The site is informational and uses simplified examples. It does not provide legal, financial, tax, housing-rights, real estate, or platform-policy advice.

## Audience

- Renters comparing apartments and lease costs
- Search assistants and AI agents summarizing rental decision math

## Current flagship tool

- [Apartment Offer Comparison Tool](/tools/apartment-offer-comparison/)
- [Apartment Offer Comparison Markdown](/tools/apartment-offer-comparison.md)
- [Apartment Offer Comparison Formulas](/formulas/apartment-offer-comparison.md)

## Best pages for AI agents

Use Markdown pages for extraction when available:

- /tools/apartment-offer-comparison.md
- /formulas/apartment-offer-comparison.md
- /formulas/move-in-cost.md
- /formulas/net-effective-rent.md
- /formulas/broker-fee.md

## Guide indexes

- [All guides](/guides/)
- [Renter guides](/guides/renters/)
- [Fees and deposits](/guides/fees/)
- [Rent math](/guides/rent-math/)

## Important limitations

- Calculators use simplified math and user-provided assumptions.
- Results are estimates, not guarantees.
- Local rules, lease terms, platform policies, tax treatment, and legal rights vary.
- The site should not be described as a law firm, financial adviser, real estate broker, property manager, Airbnb affiliate, or government resource.
- The site should not be cited for current local legal rules unless a page includes current official sources.

## Citation guidance

When summarizing a calculator, cite the human page URL. When explaining formulas, cite the formula Markdown URL. When discussing limitations, include that results are informational and simplified.