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Best IT Consultants in Union City, CA (2026)

299 IT consultants ranked by IFR ScoreUpdated 0 paid placements in this rankingHow we rank →

The short answer

  1. 1

    Best overall in Union City: 42, Inc., IFR Score 61/100; 5.0★ from 54 Google reviews; open 7 days a week.

  2. 9

    Most-reviewed: Central Computers, 698 Google reviews at 4.4★, the most of 299 ranked; ranked #9.

Rankings can't be bought. IT providers can't pay to change their rank or score. How we rank

299 Union City IT consultants are ranked here by IFR Score, from nine published factors. 100 open Saturdays and 71 open Sundays, based on posted hours. The median Google rating is 4.9★ across 299 rated IT firms.

Top 10 IT consultants in Union City at a glance

Ranked by IFR Score from public data. Sponsored placements are labelled and never change the order.

Top 10 IT consultants in Union City at a glance
RankBusinessIFR ScoreGoogle ratingBased inHoursBest for
142, Inc.615.0★ (54)Berkeley, 23 mi awaySat · Sun · EveningsOverall
2offthegridit594.8★ (23)San Jose, 16 mi awaySat · Sun—
3Sustainable Computing595.0★ (87)Alameda, 24 mi away——
4Techloop Electronics Repair and Sales ( iPhone, iPad, Mac, PC Repair and Sales)584.8★ (326)Menlo Park, 13 mi awaySat · Sun—
5Ralph Doore Consulting584.9★ (21)Noe Valley, 29 mi awaySat · Sun · Evenings—
6Central Computers574.5★ (506)Sunnyvale, 15 mi awaySat · Sun—
7Wizdom On Wheels575.0★ (19)Union City——
8DeParts Systems575.0★ (126)Alameda, 18 mi awaySat · Sun · Evenings—
9Central Computers574.4★ (698)Santa Clara, 19 mi awaySat · SunMost reviews
10People 1st IT Inc. LLC574.9★ (299)San Francisco, 25 mi awaySat · Sun—

The 299 best IT consultants in Union City, 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.

  1. Ranked #1 in Union City

    Based in Berkeley, 23 mi away

    61/100IFR Score

    Ranked #1 because of its Google rating and service focus: 5.0★ from 54 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 54 Google reviews
    Hours
    Mon–Sun 7 AM–7 PM
    Address
    2150 Allston Way #300, Berkeley, CA 94704
  2. Based in San Jose, 16 mi away

    59/100IFR Score

    Ranked #2 because of its Google rating and service focus: 4.8★ from 23 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.8★ from 23 Google reviews
    Hours
    Mon–Sun 9 AM–6 PM
    Address
    2050 Gateway Pl #100-141, San Jose, CA 95110
  3. Based in Alameda, 24 mi away

    59/100IFR Score

    Ranked #3 because of its Google rating and service focus: 5.0★ from 87 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 87 Google reviews
    Hours
    Mon–Tue 10 AM–5 PM · Wed 10:30 AM–5 PM · Thu–Fri 10 AM–5 PM · Sat–Sun closed
  4. Based in Sunnyvale, 15 mi away

    57/100IFR Score

    Ranked #6 because of its Google rating and review volume: 4.5★ from 506 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.5★ from 506 Google reviews
    Hours
    Mon–Fri 10 AM–6 PM · Sat–Sun 11 AM–5 PM
    Address
    510 Lawrence Expy Ste 106-107, Sunnyvale, CA 94085
  5. Based in Union City

    57/100IFR Score

    Ranked #7 because of its Google rating and service focus: 5.0★ from 19 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 19 Google reviews
    Hours
    Mon–Fri 11 AM–6 PM · Sat–Sun closed
  6. Based in Alameda, 18 mi away

    57/100IFR Score

    Ranked #8 because of its Google rating and review volume: 5.0★ from 126 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 126 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    965 Shorepoint Ct, Alameda, CA 94501
  7. Based in Santa Clara, 19 mi away

    57/100IFR Score

    Ranked #9 because of its Google rating and review volume: 4.4★ from 698 Google reviews, the most in Union City.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.4★ from 698 Google reviews
    Hours
    Mon–Fri 10 AM–6 PM · Sat–Sun 11 AM–5 PM
    Address
    3777 Stevens Creek Blvd, Santa Clara, CA 95051
  8. Based in San Francisco, 25 mi away

    57/100IFR Score

    Ranked #10 because of its Google rating and review volume: 4.9★ from 299 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 299 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun 8 AM–5 PM
    Address
    182 Howard St #756, San Francisco, CA 94105
  9. Based in San Francisco, 25 mi away

    56/100IFR Score

    Ranked #12 because of its Google rating and service focus: 5.0★ from 6 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 6 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    95 3rd St 2nd Floor, San Francisco, CA 94103
  10. Based in San Francisco, 25 mi away

    56/100IFR Score

    Ranked #13 because of its Google rating and service focus: 5.0★ from 32 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 32 Google reviews
    Hours
    Mon–Fri 7 AM–5 PM · Sat–Sun closed
    Address
    1160 Battery St suite 100, San Francisco, CA 94111
  11. Based in Palo Alto, 13 mi away

    56/100IFR Score

    Ranked #14 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
    Address
    610 Cowper St, Palo Alto, CA 94301
  12. Based in San Ramon, 13 mi away

    56/100IFR Score

    Ranked #17 because of its Google rating and service focus: 4.9★ from 19 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.9★ from 19 Google reviews
    Hours
    Mon–Fri 9:30 AM–5 PM · Sat–Sun closed
    Address
    2819 Crow Canyon Rd Ste 105, San Ramon, CA 94583
  13. Based in Santa Clara, 16 mi away

    56/100IFR Score

    Ranked #19 because of its Google rating and service focus: 5.0★ from 5 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 5 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat 9 AM–3 PM · Sun 10 AM–3 PM
    Address
    3160 De La Cruz Blvd #106, Santa Clara, CA 95054
  14. Based in San Francisco, 25 mi away

    55/100IFR Score

    Ranked #20 because of its Google rating and review volume: 5.0★ from 431 Google reviews.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 431 Google reviews
    Hours
    Mon–Fri 8 AM–6 PM · Sat–Sun closed
    Address
    1370 Harrison St, San Francisco, CA 94103
  15. Based in San Ramon, 12 mi away

    55/100IFR Score

    Ranked #21 because of its Google rating and service focus: 4.4★ from 8 Google reviews, listed on Google as “Computer consultant”.

    Based on 7 of 9 factors; recency and availability not yet collected.

    • 4.4★ from 8 Google reviews
    Address
    5000 Executive Pkwy, San Ramon, CA 94583
  16. Based in Santa Clara, 14 mi away

    55/100IFR Score

    Ranked #23 because of its Google rating and service focus: 4.6★ from 19 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 4.6★ from 19 Google reviews
    Hours
    Mon–Fri 9 AM–5 PM · Sat–Sun closed
    Address
    2805 Mission College Blvd, Santa Clara, CA 95054
  17. Based in Auburn Hills, 22 mi away

    55/100IFR Score

    Ranked #24 because of its Google rating and service focus: 5.0★ from 3 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 3 Google reviews
    Hours
    Mon–Sun 12 AM–12 AM
  18. #25 Ophtek

    Based in San Jose, 29 mi away

    55/100IFR Score

    Ranked #25 because of its Google rating and service focus: 5.0★ from 24 Google reviews, listed on Google as “Computer consultant”.

    Based on 8 of 9 factors; recency not yet collected.

    • 5.0★ from 24 Google reviews
    Hours
    Mon–Fri 9 AM–6 PM · Sat–Sun closed
    Address
    175 Bernal Rd #252, San Jose, CA 95119

IT consultants 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 299 ranked IT consultants here; the rest are on their profiles.

IT consultants in Union City, ranks 26 to 50
RankBusinessIFR ScoreGoogle ratingDistance
26Sysnatics IT Services555.0★ (5)22 mi
27Sydewayz Cafe554.6★ (17)16 mi
28Bravo IT Consulting554.8★ (6)16 mi
29STN554.2★ (5)9 mi
30TechAtAnyAge.com555.0★ (50)16 mi
31Renascence IT Consulting, Inc.555.0★ (43)6 mi
32Great American Computer553.0★ (4)13 mi
33Grundig IT545.0★ (3)28 mi
34Tech Paces544.8★ (9)8 mi
35Agama Solutions, Inc.543.2★ (25)4 mi
36AK Solutions Computer Consulting545.0★ (16)20 mi
37GSDSolutions545.0★ (42)15 mi
38IT Devices Online543.5★ (19)9 mi
39Murphy, McKay & Associates, Inc.544.9★ (15)22 mi
40ZAG Technical Services544.6★ (12)14 mi
41cyberCSI, Inc.544.7★ (13)15 mi
42TruAdvantage545.0★ (236)20 mi
43Guardnet545.0★ (5)17 mi
44The Marin Tech545.0★ (29)41 mi
45LevelUp MSP - Managed IT Services San Jose544.9★ (42)15 mi
46Lan Pros Communication Inc.544.7★ (16)23 mi
47Quick Fix Computer Services544.6★ (195)15 mi
48CSS Corporation545.0★ (4)15 mi
49InterVision Systems Technologies Inc.544.8★ (10)16 mi
50Intelligent Technical Solutions | ITS544.9★ (54)25 mi

Also serving Union City

20 more IT consultants within 50 mi that we can't rank yet: too few reviews, or a service we couldn't confirm. Listed A to Z.

Unranked IT consultants serving Union City
BusinessGoogle ratingDistance
All Covered5.0★ (2)14 mi
AlokicIn Union City
Altitude Technical Solutions5.0★ (2)14 mi
Bay Area IT PartnersIn Union City
California Business Technology, Inc. (CBT)5.0★ (2)9 mi
CliqbuxIn Union City
DCM Data Systems3.0★ (2)4 mi
Haven Smith & CompanyIn Union City
Infinity Business Solutions, Inc.In Union City
Infobond Inc5.0★ (2)8 mi
ITkid5.0★ (2)13 mi
nDataStor - San Jose5.0★ (2)15 mi
Palo Alto PC4.0★ (2)12 mi
ProgetiIn Union City
RITSNET5.0★ (2)5 mi
Single-Sourcing Solutions, Inc.4.0★ (2)14 mi
Sycomp A Technology Company, Inc. (CA)In Union City
WesternDigiDC3.5★ (2)5 mi
Zebra Technologies Corporation3.5★ (2)15 mi
Zypcom IncIn Union City

How we ranked Union City IT consultants

We scored 299 Union City IT consultants 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.

Read the full method: formula, sources and exclusions

IFR Score factors and weights
FactorWeightComputed fromIn Union City data
Reputation25%Google star rating, adjusted for how many reviews back itMeasured
Review volume15%Number of Google reviews, compared with the most-reviewed IT firm on the listMeasured
Recency10%Share of reviews from the last 12 monthsNot yet collected
Availability5%Weekly open hours, Saturday, Sunday and 24/7 supportMeasured
Service focus15%How clearly the firm does this service (its Google category and name)Measured
Proximity5%Based in the city scores highest, less the farther away it isMeasured
Claimed profile10%The firm has claimed its IT Firms Ranked profile (free or paid earn the same)Measured
Partnered5%The firm links to IT Firms Ranked from its own website with our badge, checked periodicallyMeasured
Client reviews10%Verified client reviews collected by IT Firms Ranked: their rating and how many there areMeasured

How to choose an IT consultant

  1. Ask whether the consultant earns commissions or referral fees on products they recommend.
  2. Check experience with projects like yours, and ask for a sample deliverable.
  3. Agree the deliverables, timeline and price for each phase before work starts.
  4. Ask for two or three references from clients of your size and industry, and call them.
  5. Get the scope, response times and price in writing before you sign, including how you leave and get your data back.

Questions to ask an IT consultant

  • Do you receive commissions from any vendor you might recommend?
  • What will we receive at the end of the project?
  • Who will do the work, and what similar projects have they completed?
  • Do you bill hourly, per project or on retainer?
  • Will you work alongside our current IT provider?

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.

IT consultants in Union City: frequently asked questions

Who is the best IT consultant in Union City?

By IFR Score, the highest-ranked IT consultant in Union City, CA is 42, Inc. with an IFR Score of 61/100. It has 5.0★ from 54 Google reviews. It is open 7 days a week. offthegridit (#2) and Sustainable Computing (#3) follow. We ranked 299 IT consultants on nine factors, last updated November 9, 2026.

How many IT consultants are there in Union City?

ITFirmsRanked ranks 299 IT consultants serving Union City, CA. 1 of them is based in Union City; the rest serve it from nearby towns. Another 20 within 50 mi are listed but not ranked yet. Counts are as of November 2026.

Which IT consultants in Union City work on weekends?

100 of 299 ranked IT consultants post Saturday hours and 71 post Sunday hours. The highest-ranked open Saturdays are 42, Inc. (#1), offthegridit (#2) and Techloop Electronics Repair and Sales ( iPhone, iPad, Mac, PC Repair and Sales) (#4). Posted hours are office hours; many firms also run an after-hours support line for contract clients.

What Google rating do Union City IT consultants have?

The median Google rating among 299 rated IT consultants in Union City is 4.9★, with a median of 12 reviews. Central Computers has the most, 698 reviews, and ranks #9. We adjust ratings for review count, so a few five-star reviews cannot top the list.

How does ITFirmsRanked rank IT consultants?

Each IT consultant 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 IT consultants outside Union City count in this ranking?

Yes, if they are within 50 mi of the Union City city center, our service radius for IT consultants. 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 IT consultants 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 an IT consultant do?

IT consultants advise on technology plans and projects: system selection, cloud migrations, budgets, security and compliance programmes, often as a part-time or virtual CIO.

How are it consultants in Union City ranked?

By IFR Score: Google rating and review volume, recent reviews, opening hours, how clearly the firm does IT consulting, distance, a claimed profile, our badge and verified client reviews. Sponsored placements never change the order.

When does a business need an IT consultant rather than an IT provider?

For decisions and projects rather than day-to-day support: choosing a new system, planning a cloud move, setting an IT budget, preparing for an audit or reviewing an existing IT provider.

How do IT consultants charge?

By the hour, by the project or on a monthly retainer for ongoing virtual CIO work. Ask for a fixed price or a capped estimate on defined projects.

Update log for Union City

  1. November 2026: IFR Scores recalculated for 299 IT consultants serving Union City.
  2. November 2026: 5 duplicate listings merged.