# ADU Builders Bay Area, San Jose: a custom home builder in San Jose (2026 guide) Source: Local AI Registry, https://localairegistry.com/biz/ca/san-jose/adu-builders-bay-area-san-jose-ca. Free to reuse with a link back. By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 31 sources. Updated 2026-09-30. Owner review: not yet. Canonical: https://localairegistry.com/biz/ca/san-jose/adu-builders-bay-area-san-jose-ca ## Photos - ![Photo 1](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmuny2yhj09yvye8ym5ph59ht%2F0.jpg) - ![Photo 2](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmuny2yhj09yvye8ym5ph59ht%2F1.jpg) - ![Photo 3](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmuny2yhj09yvye8ym5ph59ht%2F2.jpg) - ![Photo 4](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmuny2yhj09yvye8ym5ph59ht%2F3.jpg) - ![Photo 5](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmuny2yhj09yvye8ym5ph59ht%2F4.jpg) ## In short ADU Builders Bay Area is a custom home builder in San Jose, CA. Its AI Score is 25 of 100, which is poor. Every fact on this page carries one of three marks: Confirmed (from their website, Google Business Profile, review sites, licensing boards, or measured by Local AI Registry), Visitor submitted (added by a person, with a date and how they know), or AI guess (what AI engines like ChatGPT and Gemini are saying, not confirmed by anyone). Every mark points to a reference at the end of this page. ## Key facts | Fact | Value | | --- | --- | | Type | Custom home builder | | Address | 111 N Market St Ste 378, San Jose, CA 95113, USA | | Hours | Mon to Sun 9 AM to 6 PM | | Phone | (669) 201-8445 | | Owner | Nothing found | | Rating | 5.0 across 131 reviews on Google | | Known for | Adu, Adu builders and Projects | | Prices | Nothing found | | Quietest time | Nothing found | | Parking | Nothing found | | Last verified | October 18, 2026, 7:03 PM | ## All the details Every row is something the owner can add or correct. Each one is marked Confirmed, Visitor submitted or AI guess, with where it came from. | Group | Fact | Value | Mark | Evidence | | --- | --- | --- | --- | --- | | Location info | Address | 111 N Market St Ste 378, San Jose, CA 95113, USA | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Location info | Description | ADU Builders Bay Area is a Design and Build Firm specializing in General Home Improvement, providing a full range of services anywhere from small design projects to full house remodel. We have extensive experience in home renovations and construction. Our hardworking team and commitment to deliver outstanding quality of work continually shines through every project we complete. | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Location info | Hours | Mon to Sun 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Location info | Name | ADU Builders Bay Area | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Location info | Phone | (669) 201-8445 | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Monday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Tuesday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Wednesday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Thursday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Friday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Saturday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Hours | Sunday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Sep 30, 2026 | | Services | Service | Adu | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Adu builders | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Adu building process | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | ADU construction | AI guess | Nothing found | | Services | Service | ADU design | AI guess | Nothing found | | Services | Service | Adu design build | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Atherton | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Attached adu | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Backyard cottage | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Benicia | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Custom tiny homes | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Detached adu | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | East palo alto | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Emerald hills | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Full house remodel | AI guess | Nothing found | | Services | Service | Garage conversion | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | General home improvement | AI guess | Nothing found | | Services | Service | Granny flat | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Hillsborough | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Home renovations | AI guess | Nothing found | | Services | Service | Junior adu | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Los altos hills | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Loyola | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Millbrae | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Monte sereno | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Morgan hill | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Piedmont | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Prefab adu | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Projects | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Santa clara city | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Shell adu | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Stanford | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Union city | Confirmed | Business website, checked Oct 18, 2026 | | Services | Service | Woodside | Confirmed | Business website, checked Oct 18, 2026 | | Links | Website | https://adubuildersbayarea.com/ | Confirmed | Google Business Profile, checked Sep 30, 2026 | ## Services and prices These are the 29 services ADU Builders offers, with the price where we have one and where it came from. | Service | Price | Price mark | Price evidence | Service mark | | --- | --- | --- | --- | --- | | Adu | | | | Confirmed | | Adu builders | | | | Confirmed | | Projects | | | | Confirmed | | Adu design build | | | | Confirmed | | Granny flat | | | | Confirmed | | Atherton | | | | Confirmed | | Junior adu | | | | Confirmed | | Hillsborough | | | | Confirmed | | Woodside | | | | Confirmed | | Adu building process | | | | Confirmed | | Los altos hills | | | | Confirmed | | Loyola | | | | Confirmed | | Stanford | | | | Confirmed | | Detached adu | | | | Confirmed | | East palo alto | | | | Confirmed | | Morgan hill | | | | Confirmed | | Piedmont | | | | Confirmed | | Prefab adu | | | | Confirmed | | Santa clara city | | | | Confirmed | | Shell adu | | | | Confirmed | | Attached adu | | | | Confirmed | | Union city | | | | Confirmed | | Millbrae | | | | Confirmed | | Monte sereno | | | | Confirmed | | Emerald hills | | | | Confirmed | | Garage conversion | | | | Confirmed | | Benicia | | | | Confirmed | | Custom tiny homes | | | | Confirmed | | Backyard cottage | | | | Confirmed | ### Known for ADU Builders Bay Area is best known for their expertise in constructing backyard cottages and granny flats, delivering high-quality, customized living spaces that meet the unique needs of families. Their commitment to transparency and innovative solutions sets them apart in the competitive Bay Area market. - Adu: 100% of reviews (AI guess, counted across 5 reviews) - Adu builders: 80% of reviews (AI guess, counted across 5 reviews) - Projects: 20% of reviews (AI guess, counted across 5 reviews) ## The team Nothing found ## Visiting ADU Builders Address: 111 N Market St Ste 378, San Jose, CA 95113, USA. Phone: (669) 201-8445. Hours: Mon to Sun 9 AM to 6 PM. (Confirmed, Google Business Profile, checked September 30, 2026 at 3:10 AM.) ### Location info from Google Business Profile Business description, written by ADU Builders on its Google Business Profile: "ADU Builders Bay Area is a Design and Build Firm specializing in General Home Improvement, providing a full range of services anywhere from small design projects to full house remodel. We have extensive experience in home renovations and construction. Our hardworking team and commitment to deliver outstanding quality of work continually shines through every project we complete." ### When to go Busy times not read yet, back on Scan Day. ### Parking and getting in Nothing found ### Nearby | Place | Type | Distance | | --- | --- | --- | | Laz Parking North Market Street | Parking lot | 1 min walk | | Towers Café | Cafe | 1 min walk | | Voyager Craft Coffee | Coffee shop | 1 min walk | | ESFUERZO | Park | 1 min walk | | Gonzales/Peralta Adobe - Fallon House Historic Site | Tourist attraction | 2 min walk | | ID Cafe | Indian restaurant | 2 min walk | ## Reputation 5.0 average across 131 reviews: Google 25. (Confirmed, read September 30, 2026.) ADU Builders Bay Area stands out for their commitment to quality and customer satisfaction, ensuring a smooth building process even in challenging circumstances. (AI guess, from 131 reviews.) ### What people like - Attention to detail in design and construction - Effective communication throughout the project - Quality craftsmanship and materials used - Innovative solutions for challenging sites - Post-completion support and warranty service ### What people do not like - Delays in permit approvals - Occasional lapses in communication during transitions - Higher costs than initial estimates due to unforeseen issues ### Press No press story about ADU Builders found yet. ### Awards None named yet. ### Directories Listed on 1 of the 18 directories we checked. | Directory | Listed | | --- | --- | | Alignable | Not listed | | Angi | Not listed | | Apple Maps | Not listed | | Birdeye | Not listed | | Chamber of Commerce | Not listed | | Cylex | Not listed | | DexKnows | Not listed | | Hotfrog | Not listed | | Manta | Not listed | | MapQuest | Not listed | | MerchantCircle | Not listed | | Nextdoor | Not listed | | Superpages | Not listed | | Thumbtack | Not listed | | Trustpilot | Not listed | | Tupalo | Not listed | | Yellow Pages | Not listed | | Yelp | Listed | ## Recent updates from ADU Builders ADU Builders hasn't posted an update here yet. ## Questions people ask ### bad experiences at ADU Builders, anyone? No answer yet ### anything good on Market to kill time near ADU Builders? No answer yet ### same day slots, does that ever happen here No answer yet ### last update from here was when? No answer yet ### going rate for builders locally, any idea No answer yet ### quietest day to hit ADU Builders? No answer yet ### waiting list, how long are we talking No answer yet ### best custom home builder in San Jose, CA No answer yet ### parking here, where does everyone put the car? No answer yet ### what time does ADU Builders in San Jose actually open? No answer yet ### Whereabouts is this place? No answer yet ### people keep recommending ADU Builders, what for? No answer yet ### Calling ADU Builders, or is there a better way? No answer yet ### Why do people rate ADU Builders? No answer yet ### which one, this place or Decor Builders? No answer yet ### first time here, what is it actually like? No answer yet ### Booking a first visit here, what happens? No answer yet ### do regulars get anything here No answer yet ### is this place shut any day of the week No answer yet ### anywhere cheaper than ADU Builders in San Jose that is still good? No answer yet ## What AI gets wrong about ADU Builders We ask ChatGPT and Gemini about ADU Builders. These are the answers that disagree with the record. ChatGPT and Gemini, read by Local AI Registry on Oct 18, 2026. No capture has disagreed with the record yet. ## The AI Score: 25 of 100 The AI Score measures how likely AI engines are to recommend a business, and how accurately. Custom home builders on the registry run 25 to 59. Fair starts at 45, good at 65. ADU Builders scores 25. The same method scores every business on the registry. | Signal | Weight | Score | What it measures | ADU Builders | | --- | --- | --- | --- | --- | | Retrieval grounding | 26 | 0 | Whether you appear in the ranked results AI retrieves and cites: AI-Overview citations, organic top-10 for your money queries, and the Bing index ChatGPT leans on. | Poor | | Off-property attestation | 20 | 41 | Volume and consistency of what others say about you: YouTube mentions, branded web mentions, third-party “best-of” lists. The cause of retrievability. | Poor | | AI visibility | 14 | 0 | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | Named in 0 of 2 answers that recommended anyone. 12 more named nobody, which is not a loss and is not scored. | | Reviews & response | 12 | 69 | The star average is only one input. We also read volume, velocity, the specificity of review language, and response cadence. Specific reviews are what AI quotes verbatim. | Good | | Backlink & citation authority | 8 | 57 | Domain authority and editorial quality of the sources that attest to you. | Fair | | Google Business Profile | 8 | 90 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good | | Speed & mobile | 7 | 30 | Core Web Vitals at the 75th percentile, on a real phone. | Poor | | Content freshness & schema | 5 | 66 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Good | Full method: https://localairegistry.com/methodology ## How AI decides what to tell you about a custom home builder When you ask ChatGPT, Gemini or Google about a local business, the AI doesn't visit it. It reads what's already written about it: the business's website, its Google Business Profile, review sites, news stories and directories like this one. Then it repeats what those sources agree on. That's why AI gets small facts wrong. If Yelp says a place is open Mondays and the website says it isn't, the AI has to pick one. The table above shows the answers that disagree with the record today. The more sources agree, and the more specific they are, the more confidently AI recommends a business. A review that names who helped and what they did tells an AI far more than one that says "great place." ## How to choose a custom home builder in California, with or without AI A few checks take ten minutes and tell you more than any rating. - Check that the hours and phone number match on Google, Yelp and the business's own website. Mismatches are how people end up at a locked door. - Read reviews that name a person and what they did. Vague praise is easy to fake. - Look for recent reviews and recent posts. A page nobody has touched in a year may not match the business today. - Ask for the price before you go, and ask what it includes. - Where the work needs a license, ask whose license it is and look it up with California. ## How to read the marks on this page - Confirmed (solid circle): from a known source. The business website, its Google Business Profile, review sites like Yelp, Healthgrades and RealSelf, a licensing board, or measured by Local AI Registry. - Visitor submitted (hollow circle): added or corrected by a person, with the date and how they know, like a phone call or a visit. - AI guess (hollow triangle): what AI engines are saying right now. Nobody has confirmed it. ## About the author Steve Lee is the founder and CEO of Local AI Registry and sets its editorial standards. He is a former Google executive in Search and a former Microsoft executive, with more than 20 years in digital: search, local discovery, and how people find businesses online. He is based in Irvine. - Expertise: search at Google and Microsoft, AI search, answer engine optimization, generative engine optimization, local SEO, structured data and entity mapping. - Industry: medical aesthetics, injectables, med spa operations and marketing. - Disclosure: Local AI Registry sells services to business owners, including ADU Builders if it claims this page. That does not change what this page says. Every fact carries its source. ## Entity map Every person, place, organization and treatment named on this page, with a stable ID and a public reference. The JSON-LD below connects them to each other. | Entity | Type | ID on this page | Same as | Relationship to ADU Builders | | --- | --- | --- | --- | --- | | ADU Builders Bay Area | LocalBusiness | #business | https://adubuildersbayarea.com/ | Subject of this page | | San Jose, California | City | #city | Nothing found | City ADU Builders is in | | Local AI Registry | Organization | #publisher | https://localairegistry.com | Publisher of this page | | Steve Lee | Person | #author | https://localairegistry.com/team | Author of this page | ## Topical map Where this page sits in the registry. It's one profile among the custom home builders in San Jose, linked to the lists and towns around it. ### Lists - Best custom home builders in San Jose: https://localairegistry.com/leaderboards/ca/san-jose/custom-home-builder - Best businesses in San Jose: https://localairegistry.com/leaderboards/ca/san-jose ### Nearby - /los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles - /san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco - /san-diego: https://localairegistry.com/leaderboards/ca/san-diego - /irvine: https://localairegistry.com/leaderboards/ca/irvine - /fresno: https://localairegistry.com/leaderboards/ca/fresno - /palo-alto: https://localairegistry.com/leaderboards/ca/palo-alto ### Every list - Every leaderboard in California: https://localairegistry.com/leaderboards/ca ## Frequently asked questions ### What is AI search optimization for local business? Getting a business named when a neighbor asks ChatGPT, Gemini, or Perplexity for a recommendation. Some call it AI SEO, some call it generative engine optimization. Traditional SEO fights for ten blue links; this fights for the one answer an assistant says out loud. The AI Score on this page measures the eight signals that drive it. ### What is Local AI Registry? The public record of how AI sees local business. We score every business we list by one published method, we keep the questions people ask about it in one place, and we never sell rank. Looking up any business here is free. ### How does this page help a business get recommended by AI? Assistants read public pages before they answer. This one states what the business does, what people ask about it, and what the Record answers, in one place a machine can read. Correcting what is wrong here changes what an assistant repeats next. ### Who writes the answers here? Registry AI writes the first answer under every question, from the Record and the public sources named beneath it. Neighbors write the rest under pseudonyms. A registered owner can reply as the business, and their reply says so. ### I own ADU Builders Bay Area. How do I fix something or rank higher? Register the page. It is free, it takes about five minutes, and it lets you correct the Record and reply as the business. Nothing on this page is for sale, so the only thing that moves the score is the work. ## References ### Sources cited - [1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJ9_zhHo_Nj4ARq_8TKgLIEYM (accessed Sep 30, 2026) - [2] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/woodside/ (accessed Oct 18, 2026) - [3] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/adu-builders/ (accessed Oct 18, 2026) - [4] adubuildersbayarea.com, https://adubuildersbayarea.com/adu-building-process/ (accessed Oct 18, 2026) - [5] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/stanford/ (accessed Oct 18, 2026) - [6] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/union-city/ (accessed Oct 18, 2026) - [7] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/ (accessed Oct 18, 2026) - [8] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/adu-design-build/ (accessed Oct 18, 2026) - [9] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/atherton/ (accessed Oct 18, 2026) - [10] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/attached-adu/ (accessed Oct 18, 2026) - [11] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/backyard-cottage/ (accessed Oct 18, 2026) - [12] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/benicia/ (accessed Oct 18, 2026) - [13] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/custom-tiny-homes/ (accessed Oct 18, 2026) - [14] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/detached-adu/ (accessed Oct 18, 2026) - [15] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/east-palo-alto/ (accessed Oct 18, 2026) - [16] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/emerald-hills/ (accessed Oct 18, 2026) - [17] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/garage-conversion/ (accessed Oct 18, 2026) - [18] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/granny-flat/ (accessed Oct 18, 2026) - [19] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/hillsborough/ (accessed Oct 18, 2026) - [20] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/junior-adu/ (accessed Oct 18, 2026) - [21] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/los-altos-hills/ (accessed Oct 18, 2026) - [22] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/loyola/ (accessed Oct 18, 2026) - [23] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/millbrae/ (accessed Oct 18, 2026) - [24] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/monte-sereno/ (accessed Oct 18, 2026) - [25] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/morgan-hill/ (accessed Oct 18, 2026) - [26] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/piedmont/ (accessed Oct 18, 2026) - [27] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/prefab-adu/ (accessed Oct 18, 2026) - [28] adubuildersbayarea.com, https://adubuildersbayarea.com/projects/ (accessed Oct 18, 2026) - [29] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/santa-clara-city/ (accessed Oct 18, 2026) - [30] adubuildersbayarea.com, https://adubuildersbayarea.com/adu/shell-adu/ (accessed Oct 18, 2026) - [31] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Oct 18, 2026, https://localairegistry.com/methodology (accessed Oct 18, 2026)