# Blach Construction, San Jose: a general contractor in San Jose (2026 guide)

Source: Local AI Registry, https://localairegistry.com/biz/ca/san-jose/blach-construction-san-jose-ca. Free to reuse with a link back.

By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 32 sources. Updated 2026-09-30. Owner review: not yet.

Canonical: https://localairegistry.com/biz/ca/san-jose/blach-construction-san-jose-ca

## Photos

- ![Photo 1](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmunxzvsw08awye8y0qqh5p7x%2F0.jpg)
- ![Photo 2](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmunxzvsw08awye8y0qqh5p7x%2F1.jpg)
- ![Photo 3](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmunxzvsw08awye8y0qqh5p7x%2F2.jpg)
- ![Photo 4](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmunxzvsw08awye8y0qqh5p7x%2F3.jpg)
- ![Photo 5](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmunxzvsw08awye8y0qqh5p7x%2F4.jpg)


## In short

Blach Construction is a general contractor 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 Gemini and ChatGPT are saying, not confirmed by anyone). Every mark points to a reference at the end of this page.


## Key facts

| Fact | Value |
| --- | --- |
| Type | General contractor |
| Address | 2244 Blach Pl #100, San Jose, CA 95131, USA |
| Hours | Nothing found |
| Phone | (408) 244-7100 |
| Owner | Nothing found |
| Rating | 3.7 across 19 reviews on Google |
| Known for | Construction |
| Prices | Nothing found |
| Quietest time | Nothing found |
| Parking | Nothing found |
| Last verified | October 12, 2026, 10:58 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 | 2244 Blach Pl #100, San Jose, CA 95131, USA | Confirmed | Google Business Profile, checked Sep 30, 2026 |
| Location info | Description | 2244 Blach Pl #100, San Jose, CA 95131 | Confirmed | Google Business Profile, checked Sep 30, 2026 |
| Location info | Name | Blach Construction | Confirmed | Google Business Profile, checked Sep 30, 2026 |
| Location info | Phone | (408) 244-7100 | Confirmed | Google Business Profile, checked Sep 30, 2026 |
| Services | Service | Bellarmine college preparatory 2 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Bellarmine college preparatory 3 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Bellarmine college preparatory 4 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Cabrillo unified school district | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Carondelet high school | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Construction | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Design build | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Expertise | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Flextech alliance | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Hillsborough city school district | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Los altos school district 2 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Mayfield fund | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Moreau catholic high school | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Nestldown | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Oak grove school distrtict | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Oak grove school distrtict 2 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Palo alto property owner llc | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Portfolio | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Preconstruction | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Prefabrication | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Preservation partners | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | San carlos school district 2 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Santa clara university 2 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Santa clara university 3 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Spartan sports llc | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Stanford university | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | State university 2 | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Tarlton properties inc | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Ufcw south city tenant improvements | Confirmed | Business website, checked Oct 12, 2026 |
| Services | Service | Virtual design | Confirmed | Business website, checked Oct 12, 2026 |
| Links | Facebook | https://www.facebook.com/blachconstruction | Confirmed | Business website, checked Oct 12, 2026 |
| Links | Instagram | https://www.instagram.com/blachconstruction | Confirmed | Business website, checked Oct 12, 2026 |
| Links | Website | http://www.blach.com/ | Confirmed | Google Business Profile, checked Sep 30, 2026 |


## Services and prices

These are the 30 services Blach Construction offers, with the price where we have one and where it came from.

| Service | Price | Price mark | Price evidence | Service mark |
| --- | --- | --- | --- | --- |
| Construction |  |  |  | Confirmed |
| Bellarmine college preparatory 2 |  |  |  | Confirmed |
| Cabrillo unified school district |  |  |  | Confirmed |
| Mayfield fund |  |  |  | Confirmed |
| Portfolio |  |  |  | Confirmed |
| Moreau catholic high school |  |  |  | Confirmed |
| Preconstruction |  |  |  | Confirmed |
| Prefabrication |  |  |  | Confirmed |
| Bellarmine college preparatory 3 |  |  |  | Confirmed |
| Bellarmine college preparatory 4 |  |  |  | Confirmed |
| Nestldown |  |  |  | Confirmed |
| Preservation partners |  |  |  | Confirmed |
| Virtual design |  |  |  | Confirmed |
| Oak grove school distrtict |  |  |  | Confirmed |
| Oak grove school distrtict 2 |  |  |  | Confirmed |
| Palo alto property owner llc |  |  |  | Confirmed |
| San carlos school district 2 |  |  |  | Confirmed |
| Santa clara university 2 |  |  |  | Confirmed |
| Santa clara university 3 |  |  |  | Confirmed |
| State university 2 |  |  |  | Confirmed |
| Tarlton properties inc |  |  |  | Confirmed |
| Ufcw south city tenant improvements |  |  |  | Confirmed |
| Los altos school district 2 |  |  |  | Confirmed |
| Hillsborough city school district |  |  |  | Confirmed |
| Spartan sports llc |  |  |  | Confirmed |
| Stanford university |  |  |  | Confirmed |
| Carondelet high school |  |  |  | Confirmed |
| Flextech alliance |  |  |  | Confirmed |
| Expertise |  |  |  | Confirmed |
| Design build |  |  |  | Confirmed |


### Known for

- Construction: 60% of reviews (AI guess, counted across 5 reviews)


## The team

Nothing found


## Visiting Blach Construction

Address: 2244 Blach Pl #100, San Jose, CA 95131, USA. Phone: (408) 244-7100. (Confirmed, Google Business Profile, checked September 30, 2026 at 3:08 AM.)


### Location info from Google Business Profile

Business description, written by Blach Construction on its Google Business Profile: "2244 Blach Pl #100, San Jose, CA 95131"


### When to go

Busy times not read yet, back on Scan Day.


### Parking and getting in

Nothing found


### Nearby

| Place | Type | Distance |
| --- | --- | --- |
| Shaketea | Cafe | 3 min walk |
| Lundy & Concourse | Bus stop | 5 min walk |
| Lundy & Fortune | Bus stop | 5 min walk |
| Lundy & Fortune | Bus stop | 6 min walk |
| Lundy & Concourse | Bus stop | 6 min walk |
| Vy's Cafe | Cafe | 6 min walk |


## Reputation

3.7 average across 19 reviews: Google 19. (Confirmed, read September 30, 2026.)

Blach Construction is recognized for its professionalism and innovation, but driving safety issues have raised significant concerns. (AI guess, from 19 reviews.)


### What people like

- Professional and responsive team
- Innovative construction methods
- Commitment to a clean work environment


### What people do not like

- Reckless driving by employees
- Unsafe driving practices reported


### Press

No press story about Blach Construction found yet.


### Awards

None named yet.


### Directories

Directory listings not read yet.


## Recent updates from Blach Construction

Blach Construction hasn't posted an update here yet.


## Questions people ask


### is there a day here that is not slammed

No answer yet


### Can I get in this week at Blach Construction?

No answer yet


### does it matter who you see here

No answer yet


### Street parking near here, any good?

No answer yet


### picking between the two, is Top Home the safer bet?

No answer yet


### last update from here was when?

No answer yet


### anyone know the weekend hours here?

No answer yet


### Blach Construction, any chance to get someone out this week?

No answer yet


### genuinely, what is good about this one

No answer yet


### paying in instalments, is that possible here

No answer yet


### anything good on Blach to kill time near this place?

No answer yet


### walking in for a first visit, what happens

No answer yet


### prices round here, anyone got a number

No answer yet


### What general contractor questions is San Jose asking AI most?

No answer yet


### people keep recommending this place, what for?

No answer yet


### Calling Blach Construction in San Jose, or is there a better way?

No answer yet


### Whereabouts is Blach Construction?

No answer yet


### best general contractor in San Jose, CA

No answer yet


### do regulars get anything here

No answer yet


### On a budget in San Jose, is Blach Construction the one?

No answer yet


## What AI gets wrong about Blach Construction

We ask Gemini and ChatGPT about Blach Construction. These are the answers that disagree with the record.

ChatGPT and Gemini, read by Local AI Registry on Oct 12, 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. San Jose general contractors run 23 to 43. Fair starts at 45, good at 65. Blach Construction scores 25, below the San Jose average of 27. The same method scores every business on the registry.

| Signal | Weight | Score | What it measures | Blach Construction |
| --- | --- | --- | --- | --- |
| 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 15 answers that recommended anyone. 5 more named nobody, which is not a loss and is not scored. |
| Reviews & response | 12 | 62 | 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. | Fair |
| Backlink & citation authority | 8 | 59 | Domain authority and editorial quality of the sources that attest to you. | Fair |
| Google Business Profile | 8 | 78 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good |
| Speed & mobile | 7 | 46 | Core Web Vitals at the 75th percentile, on a real phone. | Fair |
| Content freshness & schema | 5 | 84 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Good |

Full method: https://localairegistry.com/methodology


## How AI decides what to tell you about a general contractor

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 general contractor 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 Blach Construction 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 Blach Construction |
| --- | --- | --- | --- | --- |
| Blach Construction | LocalBusiness | #business | http://www.blach.com/ | Subject of this page |
| San Jose, California | City | #city | Nothing found | City Blach Construction 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 general contractors in San Jose, linked to the lists and towns around it.


### Lists

- Best general contractors in San Jose: https://localairegistry.com/leaderboards/ca/san-jose/general-contractor
- 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 Blach Construction. 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:ChIJdaQgBrU1joAReZGtn5kzw4g (accessed Sep 30, 2026)
- [2] blach.com, https://www.blach.com/portfolio/bellarmine-college-preparatory-2/ (accessed Oct 12, 2026)
- [3] blach.com, https://www.blach.com/portfolio/bellarmine-college-preparatory-3/ (accessed Oct 12, 2026)
- [4] blach.com, https://www.blach.com/portfolio/bellarmine-college-preparatory-4/ (accessed Oct 12, 2026)
- [5] blach.com, https://www.blach.com/portfolio/cabrillo-unified-school-district/ (accessed Oct 12, 2026)
- [6] blach.com, https://www.blach.com/portfolio/carondelet-high-school/ (accessed Oct 12, 2026)
- [7] blach.com, https://www.blach.com/expertise/construction/ (accessed Oct 12, 2026)
- [8] blach.com, https://www.blach.com/expertise/design-build/ (accessed Oct 12, 2026)
- [9] blach.com, https://www.blach.com/expertise/ (accessed Oct 12, 2026)
- [10] blach.com, https://www.blach.com/portfolio/flextech-alliance/ (accessed Oct 12, 2026)
- [11] blach.com, https://www.blach.com/portfolio/hillsborough-city-school-district/ (accessed Oct 12, 2026)
- [12] blach.com, https://www.blach.com/portfolio/los-altos-school-district-2/ (accessed Oct 12, 2026)
- [13] blach.com, https://www.blach.com/portfolio/mayfield-fund/ (accessed Oct 12, 2026)
- [14] blach.com, https://www.blach.com/portfolio/moreau-catholic-high-school/ (accessed Oct 12, 2026)
- [15] blach.com, https://www.blach.com/portfolio/nestldown/ (accessed Oct 12, 2026)
- [16] blach.com, https://www.blach.com/portfolio/oak-grove-school-distrtict/ (accessed Oct 12, 2026)
- [17] blach.com, https://www.blach.com/portfolio/oak-grove-school-distrtict-2/ (accessed Oct 12, 2026)
- [18] blach.com, https://www.blach.com/portfolio/palo-alto-property-owner-llc/ (accessed Oct 12, 2026)
- [19] blach.com, https://www.blach.com/portfolio/ (accessed Oct 12, 2026)
- [20] blach.com, https://www.blach.com/expertise/preconstruction/ (accessed Oct 12, 2026)
- [21] blach.com, https://www.blach.com/expertise/prefabrication/ (accessed Oct 12, 2026)
- [22] blach.com, https://www.blach.com/portfolio/preservation-partners/ (accessed Oct 12, 2026)
- [23] blach.com, https://www.blach.com/portfolio/san-carlos-school-district-2/ (accessed Oct 12, 2026)
- [24] blach.com, https://www.blach.com/portfolio/santa-clara-university-2/ (accessed Oct 12, 2026)
- [25] blach.com, https://www.blach.com/portfolio/santa-clara-university-3/ (accessed Oct 12, 2026)
- [26] blach.com, https://www.blach.com/portfolio/spartan-sports-llc/ (accessed Oct 12, 2026)
- [27] blach.com, https://www.blach.com/portfolio/stanford-university/ (accessed Oct 12, 2026)
- [28] blach.com, https://www.blach.com/portfolio/san-jose-state-university-2/ (accessed Oct 12, 2026)
- [29] blach.com, https://www.blach.com/portfolio/tarlton-properties-inc/ (accessed Oct 12, 2026)
- [30] blach.com, https://www.blach.com/portfolio/ufcw-south-city-tenant-improvements/ (accessed Oct 12, 2026)
- [31] blach.com, https://www.blach.com/expertise/virtual-design/ (accessed Oct 12, 2026)
- [32] blach.com, http://www.blach.com/ (accessed Oct 12, 2026)