# Cornerstone Electrical Llc Canonical page: https://bestelectricianspennsylvania.com/pa/electricians/cornerstone-electrical/ Cornerstone Electrical Llc has one Google listing, with 10 reviews and a rating of 5.0. Ratings from Google, checked 10 November 2026. Shillington, Berks County **5.0** from 10 Google reviews - Registered 2009 **67.2** out of 100 formula v1.5 Score: 67.2 out of 100 (formula v1.5, data of 13 November 2026). Place 533 of 672 in the full directory ranking of Pennsylvania. Not in the family-run ranking: no family-run statement found and ownership: not determined. ## Key facts - **Based in:** Shillington, Berks County (ZIP 19607) - **Phone:** (610) 401-8429 (from its Google listing) - **Google rating:** 5.0 average from 10 reviews. Ratings from Google, checked 10 November 2026. [Main listing](https://maps.google.com/?cid=12797478099412538639&g_mp=Cidnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLlNlYXJjaFRleHQQAhgEIAA). - **Ownership:** Not determined. Sources: [business directory](https://maps.google.com/?cid=12797478099412538639), [business directory](https://www.bbb.org/search?find_text=Cornerstone%20Electrical&find_loc=Shillington%2C+PA), [state record](https://data.pa.gov/d/xvd7-5r2c). Researched 11 November 2026. - **Family-run:** Not found: no family-run statement was found. - **Founded:** Not found on the company's website. - **State registration:** Cornerstone Electrical LLC, Domestic Limited Liability Company, registered 1 October 2009, filing 0003911183 ([Pennsylvania Department of State](https://data.pa.gov/d/xvd7-5r2c), checked 11 November 2026). ## Why it ranks here Cornerstone Electrical Llc scores 67.2 out of 100, and most of its points come from the Google rating (36.1 of 44.4 possible) and claim accuracy (22.2 of 22.2 possible). It loses the most on the number of reviews, 12.0 of 16.7 points, with 10 Google reviews against the 5,000 needed for full credit. It earns no bonus points, which come only from what a company's own website states, because its Google listing gives no website. **Score breakdown, formula v1.5 ([method](https://bestelectricianspennsylvania.com/methodology/))** | Part | Weight | Value | Points | Possible | |---|---:|---:|---:|---:| | Google rating, adjusted for review count | 40% | 0.813 | 36.1 | 44.4 | | Number of Google reviews | 15% | 0.282 | 4.7 | 16.7 | | Accuracy of the company's own claims | 20% | 1.000 | 22.2 | 22.2 | | Years in business | 10% | 0.000 | 0.0 | 11.1 | | State registration check | 10% | not used yet | | | | Transparency (website, phone, address, hours) | 5% | 0.750 | 4.2 | 5.6 | | Weighted score | | | 67.2 | 100.0 | | **Final score** | | | **67.2** | 100.0 | ## How it compares in Pennsylvania **Cornerstone Electrical Llc compared with the median of the ranked companies, data of 13 November 2026. Ratings from Google. Years in business count only an exact founding year, so their medians cover the 176 ranked companies statewide that have one (28 in Berks County).** | Measure | Cornerstone Electrical Llc | Median of the 672 ranked in Pennsylvania | Median of the 66 ranked in Berks County | |---|---:|---:|---:| | Score | 67.2 | 73.5 | 76.7 | | Google rating | 5.0 | 4.9 | 4.9 | | Google reviews | 10 | 33 | 37 | | Years in business | not counted | 26 | 20.5 | - Place 533 of 672 in the full directory ranking of Pennsylvania, ahead of 20.6% of the 672 ranked companies. - Ranked 62nd in Berks County, the only county where it has a Google listing or says it serves (Google listing there). - Ranked 34th in Shillington, the only town where it has a Google listing or says it serves (Google listing there). ## Where it ranks - [Berks County](https://bestelectricianspennsylvania.com/pa/county/berks/): 62nd in the directory ranking; Google listing there. - [Lancaster County](https://bestelectricianspennsylvania.com/pa/county/lancaster/): 61st in the directory ranking; based 6 miles away. - [Reading](https://bestelectricianspennsylvania.com/pa/town/reading/): 36th in the directory ranking; based 3 miles away. ## Other electricians in Berks County **The ranked companies of Berks County placed nearest to Cornerstone Electrical Llc in the county's full directory ranking. Data of 13 November 2026. [All of Berks County](https://bestelectricianspennsylvania.com/pa/county/berks/).** | Place in county | Company | Score | |---:|---|---:| | 59 | [J D Electric LLC](https://bestelectricianspennsylvania.com/pa/electricians/j-d-electric/) Myerstown, Lebanon County | **68.6** | | 60 | [DHS Electrical & Remodeling](https://bestelectricianspennsylvania.com/pa/electricians/dhs-electrical-remodeling/) Schuylkill Haven, Schuylkill County | **68.6** | | 61 | [Philips Brothers Electrical Contractors](https://bestelectricianspennsylvania.com/pa/electricians/philips-brothers-electrical-contractors/) Glenmoore, Chester County | **67.8** | | 63 | [H.B. Frazer Company](https://bestelectricianspennsylvania.com/pa/electricians/h-b-frazer/) Phoenixville, Chester County | **65.5** | | 64 | [Mike Lala Electric](https://bestelectricianspennsylvania.com/pa/electricians/mike-lala-electric/) Reading, Berks County | **58.0** | | 65 | [Hawke Electrical](https://bestelectricianspennsylvania.com/pa/electricians/hawke-electrical/) Eagleville, Montgomery County | **55.2** | ## Google listings **Google listings of Cornerstone Electrical Llc. Ratings from Google, read on the dates shown** | Listing | Town | County | Rating | Reviews | Read on | |---|---|---|---:|---:|---| | [Cornerstone Electrical Llc](https://maps.google.com/?cid=12797478099412538639&g_mp=Cidnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLlNlYXJjaFRleHQQAhgEIAA) | Shillington | Berks | 5.0 | 10 | 2026-11-10 | ## Questions ### How many Google reviews does Cornerstone Electrical Llc have? Cornerstone Electrical Llc has 10 Google reviews, with an average rating of 5.0, read 10 November 2026. Source: [Google listing](https://maps.google.com/?cid=12797478099412538639&g_mp=Cidnb29nbGUubWFwcy5wbGFjZXMudjEuUGxhY2VzLlNlYXJjaFRleHQQAhgEIAA). ### Which counties does Cornerstone Electrical Llc serve? It has Google listings in Berks County. ### How is the score calculated? Its score of 67.2 comes from one formula used for every company (v1.5): the Google rating adjusted for review count, the number of reviews, claim accuracy, years in business and transparency, then ownership and bonus points. The method page gives every rule. Source: [method page](https://bestelectricianspennsylvania.com/methodology/). Something wrong or out of date? Write to [support@bestelectricianspennsylvania.com](mailto:support@bestelectricianspennsylvania.com) with the address of this page. Corrections are free; see [how corrections work](https://bestelectricianspennsylvania.com/corrections/). --- Best Electricians Pennsylvania is an independent directory. No company can pay to be listed, ranked or removed. The publisher is not affiliated with any listed company. Ratings from Google, with the date each was read. Contact and corrections: [support@bestelectricianspennsylvania.com](mailto:support@bestelectricianspennsylvania.com). [Open data](https://bestelectricianspennsylvania.com/open-data/), [change log](https://bestelectricianspennsylvania.com/changes/). The one-page answer to who leads the family-run list is on our sister site, [Best Electrician Pennsylvania](https://bestelectricianpennsylvania.com/). Company names and logos are trademarks of their respective owners and are shown only to identify the companies listed. Their use does not imply endorsement of, or affiliation with, this site. A company can ask for its logo to be removed or replaced, free, at the address above. © 2026 Best Electricians Pennsylvania. Rankings, scores and text are our own work. Ratings are from Google. 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