How to Optimize Google Business Description for the 750-Character Window

The Google Business Profile description is the smallest piece of marketing copy with the highest leverage in local search. Most owners write it once at profile creation, then never look at it again. Most agencies treat it as boilerplate. Both are mistakes. The 750-character window is read by Google's local algorithm as an entity-content signal, by every prospect who clicks the profile, and increasingly by AI-search systems extracting business descriptions for citation. This article walks through the structure that performs across all three audiences.

The First 250 Characters Are the Whole Game

The first 250 characters of the description display by default. The remaining 500 are hidden behind a "More" click that most users never make. This means the first sentence and a half carry the weight of the entire description for most readers. The structure that works in this window:

• Sentence 1: What you are and where you are. "Smith Plumbing is a third-generation family plumbing company serving Brantford and Brant County since 1962."
• Sentence 2: What you do specifically. "We handle residential repairs, drain cleaning, water heater installations, and emergency calls 24 hours a day."

That structure consistently lands inside 250 characters and tells a prospect everything they need to know to make a "call or skip" decision. Owner-name detail, certifications, awards, and any extended history go into the second 500 characters.

The Second 500 Characters Are for the AI Layer

The hidden remainder of the description is read fully by Google's crawler and increasingly extracted by AI-search systems when constructing business citations. This is where the entity-validation work happens. The substance that earns citation weight in the second 500 characters:

• Specific service categories with named offerings (not just "plumbing services" but "tankless water heater installation, sewer line replacement, sump pump repair")
• Geographic specificity beyond the city (named neighbourhoods, surrounding towns served, the broader region)
• Credentials and certifications with naming bodies ("Licensed by Ontario Plumbing Inspectors Association, member of CIPH")
• Time-anchored history ("operating from this location since 2008, three generations of family ownership")
• Honest differentiators ("Saturday emergency service, 365-day workmanship warranty on installations")

The pattern that fails this section: empty filler ("we are committed to providing the highest quality service to our valued customers"). This phrasing pattern is now recognizable to both Google's helpful-content classifier and to consumers as low-information template content, and it earns nothing.

The Rules That Cause Rejection

Google's guidelines for representing your business set explicit rules for the description field. Violations cause the description to be rejected, edited by Google's review team, or in repeat cases flagged against the profile. The rules:

• No URLs. Website addresses belong in the website field, not the description. URLs in description text are stripped or trigger rejection.
• No phone numbers. Same reason. The phone number lives in its own structured field.
• No HTML or special characters. The description is plain text only. HTML tags are stripped and may cause the description to fail review.
• No promotional language. "Limited-time offer," "best in town," "lowest prices guaranteed," and similar promotional phrasing trigger violations because the description is a business-information field, not an advertising field.
• No misleading content. Claims that cannot be substantiated (industry awards not earned, certifications not held) flag the profile for misrepresentation review.

The Keyword Question

Mention your primary service and your city the way you would describe the business to a customer. Two natural mentions of the primary keyword across 750 characters is the working maximum. Three or more mentions reads as keyword stuffing and is detected by Google's classifier as an over-optimization signal.

The best test: read the description aloud to someone who does not work in your industry. If it sounds like marketing copy written for a search engine rather than a prospect, the keyword density is too high. Rewrite the section that triggered the discomfort.

Why the Description Now Matters for AI Search

ChatGPT, Perplexity, and Google's AI Overviews increasingly pull from Google Business Profile descriptions when constructing summaries of local businesses. The question "tell me about Smith Plumbing in Brantford" returns an AI summary that draws heavily from the GBP description, the website's About page, and the LocalBusiness schema. A description that contains specific, verifiable, well-organized information feeds those summaries with citation-worthy substance. A description full of marketing-template phrasing produces summaries that read generic and convert poorly.

This is the GEO overlay that competitors miss when they treat the description as legacy SEO copy. The full work of bridging the GBP description to the AI-search citation layer is part of Vector 2 (Anchor) in our 12-Vectors methodology, and it sits alongside the schema and entity-validation work covered in our broader website diagnostic guide.

Matt's audit observation: most descriptions are written in 2018-style "we are committed to" language and have not been touched since. A 30-minute rewrite to current standards lifts both human-conversion and AI-citation rates measurably inside a quarter.

Frequently Asked Questions