# Rera Rent Calculator — Full Site Architecture, Schema & Statutory Specification (rerarentcalculator.online)

> Complete technical, mathematical, and regulatory reference for AI agents, search engines, and large language models indexing `https://rerarentcalculator.online`. Maintained by the **Dubai Tenancy & Real Estate Regulatory Research Desk**.

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## 1. Site Architecture & Technical Stack

- **Framework**: Astro 7.4+ (`output: 'static'`, 100% static HTML SSR at build time, zero external runtime JS bundles).
- **Edge Infrastructure**: Cloudflare Pages with 1-year immutable asset caching (`/_astro/*`, `/images/*`, `/fonts/*`) and `Strict-Transport-Security`.
- **Client-Side Privacy**: 100% in-browser calculation engine (`BespokeWorkbench.astro`). Zero Ejari contract rents, dates, or landlord/tenant details are transmitted to any external server.
- **Discovery Endpoints**:
  - Canonical Root: `https://rerarentcalculator.online/`
  - XML Sitemap Index: `https://rerarentcalculator.online/sitemap-index.xml`
  - HTML Sitemap: `https://rerarentcalculator.online/sitemap/`
  - Google Discover Media RSS 2.0 Feed: `https://rerarentcalculator.online/rss.xml`
  - Concise LLM Summary: `https://rerarentcalculator.online/llms.txt`

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## 2. Governing Dubai Legislation & Wikidata Knowledge Graph Bindings

| Entity Name | Wikidata URI | Statutory Role |
|---|---|---|
| **Real Estate Regulatory Agency (RERA Dubai)** | `https://www.wikidata.org/wiki/Q7299998` | Regulatory arm executing Dubai Decree No. 43 of 2013 rent cap slabs |
| **Dubai Land Department (DLD)** | `https://www.wikidata.org/wiki/Q5310566` | Operator of the 2025/2026 AI Smart Rental Index (1-to-5 Star Classification) & Ejari Registry |
| **United Arab Emirates Dirham (AED)** | `https://www.wikidata.org/wiki/Q200294` | ISO 4217 Statutory Currency for all tenancy contracts and RDSC deposits |
| **Emirate of Dubai** | `https://www.wikidata.org/wiki/Q611272` | Jurisdiction governing Law No. 26 of 2007 and Law No. 33 of 2008 |

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## 3. Dubai Decree No. 43 of 2013 Mathematical Specification

Let $R_{\text{current}}$ be the active annual Ejari contract rent in AED, and $M_{\text{DLD}}$ be the official DLD Smart Rental Index benchmark for the comparable unit and building star rating:

$$\text{Discount \%} = \left(\frac{M_{\text{DLD}} - R_{\text{current}}}{M_{\text{DLD}}}\right) \times 100$$

| Statutory Tier | Governing Article | Discount Below $M_{\text{DLD}}$ | Exact Cliff-Edge Rule | Max Permitted Rent Increase |
|---|---|---|---|---|
| **Tier 1 (Freeze)** | Decree 43 Art. 1(a) | $\le 10.00\%$ below market (or above market) | Includes exact $10.00\%$ discount | **0% (`0 AED`)** |
| **Tier 2** | Decree 43 Art. 1(b) | $10.01\%$ to $20.00\%$ below market | Includes exact $20.00\%$ discount | **5%** |
| **Tier 3** | Decree 43 Art. 1(c) | $20.01\%$ to $30.00\%$ below market | Includes exact $30.00\%$ discount | **10%** |
| **Tier 4** | Decree 43 Art. 1(d) | $30.01\%$ to $40.00\%$ below market | Includes exact $40.00\%$ discount | **15%** |
| **Tier 5 (Ceiling)** | Decree 43 Art. 1(e) | $> 40.00\%$ below market | Requires $\ge 40.01\%$ discount | **20% (Absolute Ceiling)** |

### Statutory Circuit Breakers (Law No. 33 of 2008)
- **Article 14 (90-Day Written Notice Mandate)**: Any rent increase or tenancy amendment requires written notice served at least **90 calendar days** prior to Ejari contract expiration. If `daysUntilExpiry < 90`, the permitted rent increase is legally overridden to **0% (`0 AED`)** regardless of the market discount.
- **Article 25(2) (12-Month Eviction Notice Mandate)**: Eviction upon lease expiry for property sale or personal/first-degree relative use requires a **365-day (12-month)** written notice served via Dubai Notary Public or registered mail.

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## 4. Content Schema & Data Structures (`src/data/reraDatabase.ts`)

```typescript
interface CommunityBenchmark {
  id: string;
  name: string;
  shortName: string;
  zoneType: 'Freehold' | 'Leasehold';
  district: string;
  smartStarRating: 1 | 2 | 3 | 4 | 5;
  serviceChargeSqftAed: number;
  chillerProvider: 'Empower' | 'Tabreed' | 'Chiller-Free (DEWA)' | 'Emicool';
  benchmarksAed: {
    studio: number;
    br1: number;
    br2: number;
    br3: number;
    villa4br: number;
  };
  yoyIndexChangePct: number;
}
```

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## 5. Category Taxonomy & All 8 Canonical Routes

| Route Path | Primary Keyword Intent | Interactive Centerpiece |
|---|---|---|
| `/` | `rera rent calculator` | Master Decree 43 Workbench + 1-vs-5 Star X-Ray Slider + 3D Statutory Stack + Cadastral Map |
| `/rera-calculator/` | `rera calculator` | Decree 43 Workbench + Article 14 90-Day Notice & RDSC 4-Stage Documentary Strip |
| `/rental-index/` | `rera index calculator` | 1-to-5 Star Building Classification Matrix + Before/After Tower Audit + 3D Cutaway |
| `/dubai-rent-index/` | `rera dubai calculator` | 30-Community Benchmark Directory + Regional Case-Study Explorer + Dubai Cadastral Map |
| `/about/` | Institutional E-E-A-T & Methodology | Dubai Tenancy & Real Estate Regulatory Research Desk & EU AI Act Art. 50 Disclosure |
| `/privacy-policy/` | Data Protection & Zero-Tracking | 100% Client-Side Execution & GDPR / UAE PDPL Compliance |
| `/terms-of-service/` | Statutory Safe Harbor | Regulatory Notice & Liability Boundaries |
| `/sitemap/` | Complete HTML Directory | Dynamic District Category Grid & 30-Community Deep-Link Index |

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## 6. Mathematical Verification Test Fixtures (`TC-01`..`TC-08`)

1. **`TC-01` (Art. 1a Freeze)**: Current `92,000 AED`, Index `100,000 AED` (`8.00%` below), Notice `120d` $\rightarrow$ **0% (`0 AED`)**, New Rent `92,000 AED`.
2. **`TC-02` (Art. 1b 5% Slab)**: Current `85,000 AED`, Index `100,000 AED` (`15.00%` below), Notice `95d` $\rightarrow$ **5% (`+4,250 AED`)**, New Rent `89,250 AED`.
3. **`TC-03` (Art. 1b Exact 20.00% Cliff-Edge)**: Current `80,000 AED`, Index `100,000 AED` (`20.00%` below), Notice `110d` $\rightarrow$ **5% (`+4,000 AED`)**, New Rent `84,000 AED`.
4. **`TC-04` (Art. 1c 10% Slab)**: Current `75,000 AED`, Index `100,000 AED` (`25.00%` below), Notice `100d` $\rightarrow$ **10% (`+7,500 AED`)**, New Rent `82,500 AED`.
5. **`TC-05` (Art. 1d 15% Slab)**: Current `65,000 AED`, Index `100,000 AED` (`35.00%` below), Notice `90d` $\rightarrow$ **15% (`+9,750 AED`)**, New Rent `74,750 AED`.
6. **`TC-06` (Art. 1e 20% Max Cap)**: Current `55,000 AED`, Index `100,000 AED` (`45.00%` below), Notice `120d` $\rightarrow$ **20% (`+11,000 AED`)**, New Rent `66,000 AED`.
7. **`TC-07` (Art. 14 Late Notice Override)**: Current `60,000 AED`, Index `100,000 AED` (`40.00%` below), Notice `45d (<90d)` $\rightarrow$ **0% Override (`0 AED`)**, New Rent `60,000 AED`.
8. **`TC-08` (Above-Market Rent Freeze)**: Current `115,000 AED`, Index `100,000 AED` (`-15.00%` above market), Notice `120d` $\rightarrow$ **0% (`0 AED`)**, New Rent `115,000 AED`.

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## 7. Complete 30 Dubai Community Benchmarks (2026 DLD Smart Index)

- **Dubai Marina** (Freehold, 4-Star): Studio `65,000 AED` | 1BR `100,000 AED` | 2BR `155,000 AED` | 3BR `235,000 AED`
- **Downtown Dubai** (Freehold, 5-Star): Studio `82,000 AED` | 1BR `135,000 AED` | 2BR `215,000 AED` | 3BR `340,000 AED`
- **Jumeirah Village Circle (JVC)** (Freehold, 4-Star): Studio `45,000 AED` | 1BR `68,000 AED` | 2BR `98,000 AED` | 3BR `142,000 AED`
- **Business Bay** (Freehold, 4-Star): Studio `68,000 AED` | 1BR `105,000 AED` | 2BR `160,000 AED` | 3BR `240,000 AED`
- **Jumeirah Lake Towers (JLT)** (Freehold, 4-Star): Studio `58,000 AED` | 1BR `88,000 AED` | 2BR `132,000 AED` | 3BR `190,000 AED`
- **Palm Jumeirah** (Freehold, 5-Star): Studio `110,000 AED` | 1BR `175,000 AED` | 2BR `270,000 AED` | 3BR `420,000 AED`
- **Dubai Hills Estate** (Freehold, 5-Star): Studio `64,000 AED` | 1BR `98,000 AED` | 2BR `152,000 AED` | 3BR `245,000 AED`
- **Al Barsha 1** (Leasehold, 3-Star): Studio `46,000 AED` | 1BR `66,000 AED` | 2BR `94,000 AED` | 3BR `135,000 AED`
- **Deira (Al Rigga / Port Saeed)** (Leasehold, 3-Star): Studio `36,000 AED` | 1BR `54,000 AED` | 2BR `78,000 AED` | 3BR `112,000 AED`
- **Bur Dubai (Al Mankhool)** (Leasehold, 3-Star): Studio `42,000 AED` | 1BR `62,000 AED` | 2BR `88,000 AED` | 3BR `125,000 AED`
- *(Plus 20 additional indexed Dubai communities accessible via `https://rerarentcalculator.online/dubai-rent-index/` and `https://rerarentcalculator.online/sitemap/`)*

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## 8. Editorial Policy & Regulatory Safe Harbor

Published by the **Dubai Tenancy & Real Estate Regulatory Research Desk** (`https://rerarentcalculator.online/about/#editorial-standards`). Compliant with Regulation (EU) 2024/1689 (EU AI Act) Article 50 & Article 50(4) and IPTC DigitalSourceType `compositeWithTrainedAlgorithmicMedia`. Notice: This calculation engine models published statutory formulas and regulatory codes for informational and planning purposes only and does not provide certified legal advice.