topical-gaps

Topical Gap Analysis — Phase 7

Executive Summary

Topical authority is the #1 long-term competitive moat in local SEO. Google's Helpful Content System (integrated into core algorithm March 2024) rewards businesses that comprehensively cover a topic cluster vs. those that superficially mention many topics. The 25-article threshold signal: sites with 25+ articles in a cluster receive significantly stronger topical authority signals than sites with 10 or fewer (SEMrush 2024). AI Overviews (AIO) cite topically authoritative sources 2–3× more than shallow coverage sites. This phase maps the client's topical universe, identifies coverage gaps vs. top competitors, and produces a prioritized content roadmap.

2025–2026 topical authority benchmarks:

• Pillar pages: minimum 3,000 words; competitive 5,000–10,000 words for high-competition topics
• Cluster pages: minimum 1,500 words; competitive 2,000–2,500 words; Surfer Score ≥70
• Supporting/spoke pages: 800–1,500 words; 3–5 internal links per 1,000 words
• Minimum viable cluster: 1 pillar + 5 cluster pages (starting point); 10–15 = AIO eligibility threshold
• Authority threshold: 25+ articles per cluster = topical authority signal begins accumulating (SEMrush 2024)
• Content decay trigger: >20% YoY click decline → refresh required; >50% → full rewrite or consolidate
• AIO topical citation: 58% AIO surge for businesses with full topic cluster coverage (Amsive early 2026)
• ChatGPT freshness factor: pages updated within 30 days cited at 76.4% rate; AI Overviews prefer content <3–6 months old
• Clustered content vs. standalone: 30% more organic traffic; holds rankings 2.5× longer (HireGrowth 2025)
• Early ranking improvements: 2–3 months after cluster launch; significant topical authority gains: 6–12 months

Pillar-to-cluster ratio benchmarks: | Stage | Pillar : Cluster | Use Case | |-------|-----------------|----------| | Starting point | 1 + 3–5 | Small teams, new businesses | | AIO-eligible | 1 + 10–15 | Local business growth stage | | Authority building | 1 + 20–30+ | Competitive niches, multi-service businesses |

Numbered Action Plan:

Immediate (Week 1)

1. Map the complete topical universe — list all Level 1 pillars (main services), Level 2 clusters (subtopics), Level 3 supporting angles. Use AlsoAsked.com for PAA tree and SEMrush Topic Research for visual cluster map. Effort: 2–3 hrs.
2. Run Ahrefs Content Gap vs. top 3 competitors — Competitive Analysis → Content Gap → enter your domain + 3 competitors → export and cluster by topic. Identify full clusters you're entirely missing vs. individual keyword gaps. Effort: 1–2 hrs.
3. Audit existing cluster completeness — for each service, count: pillar page? cluster pages? supporting pages? Flag clusters below 5 pages as "not started." Effort: 1 hr.
4. Fix orphaned cluster pages — run site_crawler.py → find cluster pages with <3 inbound internal links → add contextual link from pillar (within body copy, not just navigation). Effort: 15 min/page. Priority: 20 (4×5).
5. Add FAQPage schema to all pillar pages — AIO cites pages with FAQPage schema at 3.2× rate. 5 FAQ minimum per pillar, answers ≤50 words. Effort: 30 min/page.

Short-Term (Week 2–4)

1. Create missing high-priority cluster pages — gaps where all competitors have pages but client doesn't. Target 1,500+ words, link to pillar immediately on publish. Effort: 3–5 hrs/page. Priority: 16 (4×4).
2. Expand thin pillar pages to 3,000+ words — use Surfer SEO (target score ≥80) to identify missing NLP entities and sections. Add HowTo schema for process steps. Effort: 6–10 hrs/pillar.
3. Answer top 10 PAA questions per pillar — AlsoAsked.com → extract top 10 questions → add as FAQ entries on relevant service pages + FAQPage schema. Effort: 1–2 hrs. Expected: AIO citation + PAA box wins.
4. Map semantic gaps — identify missing entities (service types, local landmarks, certifications) and concepts (industry jargon vs. customer language, regional naming variants). Effort: 1 hr.
5. Build original data/statistics page per pillar — original research = primary AI citation trigger. Local survey, real project data, proprietary pricing benchmarks. Effort: 8–16 hrs. Priority: 12 (4×3).

Step 1: Read Project Context

Read {AUDIT_DIR}/intake-data.md — business name, services, location. Read {AUDIT_DIR}/content-inventory.md — current content map. Read {AUDIT_DIR}/content-gaps.md — identified topic and format gaps. Read {AUDIT_DIR}/keyword-gaps.md — keyword opportunities.

Tools for this phase: | Tool | Purpose | Cost | |------|---------|------| | Ahrefs Topics Explorer | Discover topic clusters and subtopics | Paid | | Ahrefs Content Gap | Find topics competitors rank for that client doesn't | Paid | | SEMrush Topic Research | Visual topic cluster mapping | Paid | | SEMrush Keyword Gap | Competitor topical coverage comparison | Paid | | AlsoAsked.com | PAA-based question mapping per topic | Freemium | | AnswerThePublic | Visualize question clusters around topics | Freemium | | Google PAA boxes | Live "People Also Ask" questions per pillar | Free | | Surfer SEO | NLP-based content brief with entity coverage | Paid | | Google Search Console | Which topics drive clicks (existing authority) | Free |

2025–2026 Topical Authority Context: Google's Helpful Content system (folded into core algorithm March 2024) and AI Overviews reward demonstrable expertise across a topic cluster. Surface-level coverage of many topics is penalized; deep coverage of fewer topics ranks. The goal is topic clusters where every subtopic links to a pillar, and every pillar is internally linked from cluster pages. Google's December 2025 Core Update focused heavily on E-E-A-T and expertise signals; the June 2025 update targeted link authority — the two together now enforce topical depth more aggressively than any prior update cycle.

Content Depth Thresholds (2025 benchmarks): | Page Type | Minimum Words | Target Words | Surfer Score | Internal Links | |-----------|-------------|-------------|-------------|---------------| | Pillar page | 3,000 | 5,000–10,000 | ≥80 | 8–15 cluster links out | | Cluster page | 1,500 | 2,000–2,500 | ≥70 | 1 pillar link + 2–3 cluster links | | Supporting page | 800 | 1,000–1,500 | ≥65 | 1 cluster or pillar link | | FAQ entry | 200 | 300–500 | N/A | 1 service/pillar link |

Content Decay by Content Type (Research 2025): | Content Type | Typical Decay Timeline | Update Frequency | |-------------|----------------------|-----------------| | Technology/software | 4–6 months | Quarterly | | Local service content | 12–24 months | Semi-annually minimum | | List/roundup pages | 3–4 months | Quarterly (new entrants change landscape) | | Educational/evergreen | 12–18 months | Annually + on stat change | | AI-heavy niches | 2–4 months | Quarterly (rapid evolution) |

Section 1: Complete Topical Universe Mapping

Define the Core Topical Universe

For this business, list ALL possible topics that could be relevant:

Level 1 — Main Topics (Pillars): The broadest topics the business should be authoritative on. Example (for a plumber): Emergency Plumbing, Drain Services, Water Heaters, Pipe Repair, Bathroom Plumbing, Kitchen Plumbing, Outdoor Plumbing, Commercial Plumbing

Level 2 — Subtopics (Clusters): Under each pillar, the key subtopics. Example under "Water Heaters": Types of Water Heaters, Water Heater Installation, Water Heater Repair, Water Heater Replacement, Tankless vs. Tank, Cost Guide, Troubleshooting

Level 3 — Supporting Topics: Specific questions, comparisons, how-tos under each subtopic. Example under "Water Heater Installation": How long does it take, What's included, DIY vs. Professional, Building permits needed, Cost breakdown

Section 2: Client vs. Ideal Topical Coverage

Coverage Map

PILLAR: [Main Topic]
├── CLUSTER: [Subtopic]
│   ├── Supporting: [sp