62/100IFR Score
Ranked #1 because of its Google rating and service focus: 4.9★ from 56 Google reviews, listed on Google as “Computer networking service”.
Based on 8 of 9 factors; recency not yet collected.
Best Network Cabling And Installation Companies in Diamond Bar, CA (2026)
404 network cabling and installation companies ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →
The short answer
- 1
Best overall in Diamond Bar: Digital Dragon Technology, IFR Score 62/100; 4.9★ from 56 Google reviews; open 7 days a week.
- 14
Most-reviewed: Human Computer, 503 Google reviews at 4.9★, the most of 404 ranked; ranked #14.
Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank
404 Diamond Bar network cabling and installation companies are ranked here by IFR Score, from nine published factors. 183 open Saturdays and 111 open Sundays, based on posted hours. The median Google rating is 5.0★ across 404 rated IT firms.
Top 10 network cabling and installation companies in Diamond Bar at a glance
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
| Rank | Business | IFR Score | Google rating | Based in | Hours | Best for |
|---|---|---|---|---|---|---|
| 1 | Digital Dragon Technology | 62 | 4.9★ (56) | Garden Grove, 18 mi away | Sat · Sun · Evenings | Overall |
| 2 | Digico Wiring and Installation | 62 | 5.0★ (87) | Los Angeles, 31 mi away | Sat · Sun · Evenings | — |
| 3 | Sam's IT Solutions | 61 | 5.0★ (497) | Pasadena, 20 mi away | Sat · Sun · Evenings | — |
| 4 | Ace Alarm, Inc. | 61 | 4.6★ (54) | Los Angeles, 27 mi away | Sat · Sun · Evenings | — |
| 5 | YesTechie | 60 | 4.9★ (58) | North Hills, 39 mi away | Sat · Sun · Evenings | — |
| 6 | Dove Communications Inc VoIP Phones Security Cameras IT Data Cabling | 59 | 5.0★ (76) | Los Angeles, 25 mi away | — | — |
| 7 | Smartology | 59 | 4.9★ (43) | Costa Mesa, 24 mi away | Sat | — |
| 8 | NovaTech Network Wiring | 58 | 4.6★ (15) | Anaheim, 15 mi away | Sat · Sun · Evenings | — |
| 9 | Structured Wiring By Rader | 58 | 4.9★ (87) | Huntington Beach, 28 mi away | Sat · Sun · Evenings | — |
| 10 | TexStar Networks | 58 | 5.0★ (16) | Chino, 14 mi away | Sat · Evenings | — |
The 404 best network cabling and installation companies in Diamond Bar, ranked
Ordered by IFR Score, a 0–100 score from nine published factors. Paid placement never changes the order.
Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.
Based in Los Angeles, 31 mi away
62/100IFR ScoreRanked #2 because of its Google rating and service focus: 5.0★ from 87 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Pasadena, 20 mi away
61/100IFR ScoreRanked #3 because of its Google rating and review volume: 5.0★ from 497 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Los Angeles, 27 mi away
61/100IFR ScoreRanked #4 because of its Google rating and service focus: 4.6★ from 54 Google reviews, listed on Google as “Computer networking service”.
Based on 8 of 9 factors; recency not yet collected.
#5 YesTechie
Based in North Hills, 39 mi away
60/100IFR ScoreRanked #5 because of its Google rating and service focus: 4.9★ from 58 Google reviews, listed on Google as “Computer networking service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Los Angeles, 25 mi away
59/100IFR ScoreRanked #6 because of its Google rating and service focus: 5.0★ from 76 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
#7 Smartology
Based in Costa Mesa, 24 mi away
59/100IFR ScoreRanked #7 because of its Google rating and service focus: 4.9★ from 43 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Anaheim, 15 mi away
58/100IFR ScoreRanked #8 because of its Google rating and service focus: 4.6★ from 15 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Huntington Beach, 28 mi away
58/100IFR ScoreRanked #9 because of its Google rating and review volume: 4.9★ from 87 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#10 TexStar Networks
Based in Chino, 14 mi away
58/100IFR ScoreRanked #10 because of its Google rating and service focus: 5.0★ from 16 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Brea, 10 mi away
58/100IFR ScoreRanked #11 because of its Google rating and service focus: 4.5★ from 8 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Santa Ana, 21 mi away
57/100IFR ScoreRanked #12 because of its Google rating and service focus: 4.9★ from 39 Google reviews, listed on Google as “Computer networking service”.
Based on 8 of 9 factors; recency not yet collected.
Based in Glendale, 27 mi away
57/100IFR ScoreRanked #13 because of its Google rating and review volume: 5.0★ from 174 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#14 Human Computer
Based in Riverside, 22 mi away
57/100IFR ScoreRanked #14 because of its Google rating and review volume: 4.9★ from 503 Google reviews, the most in Diamond Bar.
Based on 8 of 9 factors; recency not yet collected.
Based in El Monte, 12 mi away
57/100IFR ScoreRanked #15 because of its Google rating and service focus: 5.0★ from 21 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in Ontario, 12 mi away
57/100IFR ScoreRanked #16 because of its Google rating and service focus: 4.3★ from 13 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 7 of 9 factors; recency and availability not yet collected.
#17 Tech Expert Guys
Based in Irvine, 23 mi away
57/100IFR ScoreRanked #17 because of its Google rating and review volume: 4.9★ from 241 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
#18 Pc Specialist
Based in Fontana, 18 mi away
56/100IFR ScoreRanked #18 because of its Google rating and review volume: 4.9★ from 273 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Santa Ana, 22 mi away
56/100IFR ScoreRanked #19 because of its Google rating and service focus: 4.9★ from 30 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
#20 Nemerald
Based in Covina, 6 mi away
56/100IFR ScoreRanked #20 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Based in El Monte, 15 mi away
56/100IFR ScoreRanked #21 because of its Google rating and service focus: 2.9★ from 16 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
#22 IT Solve Hub
Based in Irvine, 24 mi away
56/100IFR ScoreRanked #22 because of its Google rating and review volume: 5.0★ from 173 Google reviews.
Based on 8 of 9 factors; recency not yet collected.
Based in Corona, 19 mi away
56/100IFR ScoreRanked #23 because of its Google rating and service focus: 3.9★ from 19 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 7 of 9 factors; recency and availability not yet collected.
#24 QNAP INC.
Based in Pomona, 2 mi away
56/100IFR ScoreRanked #24 because of its Google rating and service focus: 4.0★ from 12 Google reviews, listed on Google as “Computer networking service”.
Based on 8 of 9 factors; recency not yet collected.
#25 Access Cabling
Based in Los Angeles, 25 mi away
56/100IFR ScoreRanked #25 because of its Google rating and service focus: 5.0★ from 4 Google reviews, listed on Google as “Telecommunications contractor”.
Based on 8 of 9 factors; recency not yet collected.
Network cabling and installation companies ranked #26 to #50
#1 to #25 are shown in full above. Here are #26 to #50, in IFR Score order; each links to its profile. We publish the top 50 of 404 ranked network cabling and installation companies here; the rest are on their profiles.
Also serving Diamond Bar
20 more network cabling and installation companies within 40 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.
| Business | Google rating | Distance |
|---|---|---|
| Agility Integration Corporation | 4.5★ (2) | 11 mi |
| Alquest Technologies, Inc. | 5.0★ (2) | 5 mi |
| Brothers in Arms IT Services | 5.0★ (2) | 17 mi |
| CompuWiz | 4.8★ (181) | In Diamond Bar |
| Dennis Jenkins Co | 5.0★ (2) | 19 mi |
| DIGICOM USA | 5.0★ (2) | 9 mi |
| Edge Secure | 5.0★ (2) | 10 mi |
| FlexTG Los Angeles | 5.0★ (2) | 14 mi |
| GRACETEL, INC | 5.0★ (2) | 20 mi |
| Help IT Tech | 5.0★ (2) | 19 mi |
| IntelesysOne | 5.0★ (2) | 13 mi |
| IT Advantage, Inc. | 5.0★ (2) | 12 mi |
| JCVTEK | 5.0★ (2) | 16 mi |
| Los Angeles IT - IT Support and Managed IT Services East Los Angeles | 5.0★ (2) | 7 mi |
| MCIS Radio | 4.5★ (2) | 21 mi |
| OA Technology | 4.5★ (2) | 7 mi |
| Rolcom Inc | 5.0★ (2) | 16 mi |
| TechPro Services US | 5.0★ (2) | 11 mi |
| Teledata Communications | 3.0★ (2) | 20 mi |
| Total Wireless | 3.4★ (5) | In Diamond Bar |
How we ranked Diamond Bar network cabling and installation companies
We scored 404 Diamond Bar network cabling and installation companies on nine factors, weighted as shown. An IT firm is ranked when its service is confirmed and it has 3 or more Google reviews or a claimed profile. An IT firm with no Google reviews scores zero on rating, review volume and recency. Other unknown factors are left out, not counted as zero. Scores last refreshed November 9, 2026.
Paid placement never changes a rank or score. Sponsored businesses are paid, labelled, limited to 3 and shown above the ranking, outside it.
| Factor | Weight | Computed from | In Diamond Bar data |
|---|---|---|---|
| Reputation | 25% | Google star rating, adjusted for how many reviews back it | Measured |
| Review volume | 15% | Number of Google reviews, compared with the most-reviewed IT firm on the list | Measured |
| Recency | 10% | Share of reviews from the last 12 months | Not yet collected |
| Availability | 5% | Weekly open hours, Saturday, Sunday and 24/7 support | Measured |
| Service focus | 15% | How clearly the firm does this service (its Google category and name) | Measured |
| Proximity | 5% | Based in the city scores highest, less the farther away it is | Measured |
| Claimed profile | 10% | The firm has claimed its IT Firms Ranked profile (free or paid earn the same) | Measured |
| Partnered | 5% | The firm links to IT Firms Ranked from its own website with our badge, checked periodically | Measured |
| Client reviews | 10% | Verified client reviews collected by IT Firms Ranked: their rating and how many there are | Measured |
How to choose a network cabling company
- Ask which licence, permits and inspections your job needs locally, and who arranges them.
- Ask for a site survey and a written quote that lists cable type, number of runs and testing.
- Make sure each run is tested and certified, and that you receive the results.
- Check whether the firm also installs and configures switches and Wi-Fi, or only the cabling.
- Ask for two or three references from clients of your size and industry, and call them.
- Get the scope, response times and price in writing before you sign, including how you leave and get your data back.
Questions to ask a network cabling company
- Which licence do you hold for low-voltage work here, and will you pull the permit?
- Which cable category and brand do you install, and is there a manufacturer warranty?
- Will every run be tested and labelled, and will we receive the test results?
- Who handles the network equipment and Wi-Fi after the cabling is in?
- How do you handle work in occupied offices or after hours?
Terms explained
- MSP (managed service provider)
- A firm that runs a business’s IT for a recurring fee: monitoring, patching, help desk, backups and security tools.
- Co-managed IT
- An arrangement where an outside firm supports an in-house IT person or team, sharing tools and tasks.
- Break-fix
- IT support paid per incident or per hour, with no monthly agreement.
- SLA (service-level agreement)
- The contract terms for response and resolution times, uptime and support hours.
- Help desk
- The support line staff call or email for IT problems.
- RMM
- Remote monitoring and management software that lets an IT firm watch, patch and fix computers remotely.
- vCIO
- A virtual chief information officer: part-time IT strategy and budgeting from an outside firm.
- MSSP
- A managed security service provider: a firm that monitors and manages security tools around the clock.
- EDR / MDR
- Endpoint detection and response software, and the managed service of people watching its alerts (managed detection and response).
- MFA
- Multi-factor authentication: a second proof of identity, such as an app prompt, on top of a password.
- Penetration test
- An authorised, simulated attack on your systems to find weaknesses before criminals do.
- SOC 2
- An independent auditor’s report (AICPA standard) on a service provider’s security controls.
Network cabling and installation companies in Diamond Bar: frequently asked questions
Who is the best network cabling company in Diamond Bar?
By IFR Score, the highest-ranked network cabling company in Diamond Bar, CA is Digital Dragon Technology with an IFR Score of 62/100. It has 4.9★ from 56 Google reviews. It is open 7 days a week. Digico Wiring and Installation (#2) and Sam's IT Solutions (#3) follow. We ranked 404 network cabling and installation companies on nine factors, last updated November 9, 2026.
How many network cabling and installation companies are there in Diamond Bar?
ITFirmsRanked ranks 404 network cabling and installation companies serving Diamond Bar, CA. 1 of them is based in Diamond Bar; the rest serve it from nearby towns. Another 20 within 40 mi are listed but not ranked yet. Counts are as of November 2026.
Which network cabling and installation companies in Diamond Bar work on weekends?
183 of 404 ranked network cabling and installation companies post Saturday hours and 111 post Sunday hours. The highest-ranked open Saturdays are Digital Dragon Technology (#1), Digico Wiring and Installation (#2) and Sam's IT Solutions (#3). Posted hours are office hours; many firms also run an after-hours support line for contract clients.
What Google rating do Diamond Bar network cabling and installation companies have?
The median Google rating among 404 rated network cabling and installation companies in Diamond Bar is 5.0★, with a median of 15 reviews. Human Computer has the most, 503 reviews, and ranks #14. We adjust ratings for review count, so a few five-star reviews cannot top the list.
How does ITFirmsRanked rank network cabling and installation companies?
Each network cabling company gets a 0–100 IFR Score from nine published factors, led by reputation (25%), review volume (15%), service focus (15%) and recency (10%). An IT firm with no Google reviews scores zero on rating, review volume and recency; other factors we cannot measure are left out. Only IT firms with a confirmed service and 3 or more reviews, or a claimed profile, are ranked.
Do network cabling and installation companies outside Diamond Bar count in this ranking?
Yes, if they are within 40 mi of the Diamond Bar city center, our service radius for network cabling and installation companies. Each listing shows where the IT firm is based and how far away it is. Proximity is 5% of the IFR Score, so a nearby IT firm gets a small edge.
Can network cabling and installation companies pay to rank higher on ITFirmsRanked?
No. The IFR Score never reads payment status, and this ranking has 0 paid placements. Up to 3 Featured IT firms may appear above the list, labelled Sponsored and showing their honest rank.
What does a network cabling company do?
Network cabling companies design and install structured cabling (Cat6, fibre), racks, Wi-Fi access points and network equipment in offices, warehouses and new buildings.
How are network cabling and installation companies in Diamond Bar ranked?
By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does network cabling and installation, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.
Does network cabling need a licence?
It depends on where you are. Some states and provinces license low-voltage or limited-energy work (California’s C-7 low voltage classification and Washington’s limited energy specialty are examples) and many cities require permits. Ask the firm which licence and permits apply to your job.
What should we get when the cabling is finished?
Labelled cables and patch panels, test results for every run and a floor plan showing where each run goes. Those records make later changes and fault-finding much faster.
Update log for Diamond Bar
- November 2026: IFR Scores recalculated for 404 network cabling and installation companies serving Diamond Bar.
- November 2026: 1 duplicate listing merged.
More network cabling and installation companies and Diamond Bar pages
Network cabling and installation companies near Diamond Bar
- Network cabling and installation companies in Walnut, CA409 ranked
- Network cabling and installation companies in Pomona, CA391 ranked
- Network cabling and installation companies in Chino Hills, CA392 ranked
- Network cabling and installation companies in San Dimas, CA406 ranked
- Network cabling and installation companies in South San Jose Hills, CA410 ranked
- Network cabling and installation companies in La Verne, CA395 ranked
- Network cabling and installation companies in Covina, CA404 ranked
- Network cabling and installation companies in Rowland Heights, CA411 ranked
- Network cabling and installation companies in Claremont, CA364 ranked
- Network cabling and installation companies in Chino, CA351 ranked
Other services in Diamond Bar
- Managed IT service providers in Diamond Bar875 ranked
- Cybersecurity companies in Diamond Bar526 ranked
- IT consultants in Diamond Bar664 ranked
- Business phone system providers in Diamond Bar365 ranked
- Data recovery services in Diamond Bar432 ranked
- Computer repair shops in Diamond Bar267 ranked
- All IT providers in Diamond Bar