CallataGuides

Business phone system for engineering services firms in Washington

1,701 engineering services firms operated in Washington in 2023. Where they are, how big their teams are, and what phone service costs them.

Establishments
1,701CBP 2023
Employees
34,507mid-March 2023
Per 100k residents
21.4U.S. 18.6
State rank
12th of 51by count

Engineering services firms in Washington by the numbers

County Business Patterns counts 1,701 establishments in Washington classified as Engineering Services (NAICS 541330) for 2023. They employed 34,507 people in mid-March and reported $3.9 billion in annual payroll. That is the 12th highest count among the 51 states and DC with published figures. Engineering services firms make up 0.84% of the 202,177 business establishments in the state.

Per 100,000 residents (2024 estimate) Washington has 21.4 engineering services firms, 15.0% above the national rate of 18.6. The average establishment has 20.3 employees against 19.9 nationally. Payroll per employee is $114,331, 4.0% above the U.S. figure of $109,949.

Engineering services firms: Washington compared with the U.S., 2023
MeasureWashingtonUnited States
Establishments1,70163,233
Mid-March employees34,5071,260,577
Annual payroll$3,945,235,000 (moderate noise)$138,599,619,000
Employees per establishment20.319.9
Payroll per employee$114,331$109,949
Establishments per 100,000 residents21.418.6

Census County Business Patterns 2023 (mid-March employment; annual payroll). Employees and payroll flagged high-noise are shown but not used in the text. Residents: Census Vintage 2024 estimates.

Where engineering services firms in Washington are concentrated

Census published engineering firm counts for 22 metro or micropolitan areas that include part of Washington. The largest is Seattle, WA, with 950 establishments. Single-state metro and micropolitan areas account for 89% of the statewide total; the rest are outside any published area or in areas Census suppressed.

Engineering services firms by metro or micropolitan area, Washington, 2023
AreaEstablishmentsEmployeesPer 100k residents
Seattle, WA95016,33222.9
Portland, OR-WA60510,95523.8
Spokane, WA1251,41820.7
Kennewick, WA1021,91231.9
Bellingham, WA7471131.5
Bremerton, WA651,23023.1
Olympia, WA5241717.2
Wenatchee, WA2414718.9
Mount Vernon, WA238417.3
Yakima, WA191687.3
Oak Harbor, WA12—13.9
Longview, WA11579.7
Centralia, WA115312.6
Ellensburg, WA102420.8
Lewiston, ID-WA96013.8
Port Townsend, WA86223.6
Port Angeles, WA7329.0
Walla Walla, WA7—11.3
Pullman, WA7—14.5
Moses Lake, WA6525.7
Aberdeen, WA6467.7
Shelton, WA3—4.3

Source: Census County Business Patterns 2023; population from Census Vintage 2024 estimates.

Team sizes at engineering services firms in Washington

54.9% of Washington's engineering services firms with employees had fewer than five people in March 2023, compared with 53.1% nationally. 69.6% had fewer than ten. That is the size of team where a missed call usually means nobody was free, not that nobody was on staff.

Engineering services firms in Washington by employment size, 2023
Employment sizeEstablishmentsShareU.S. share
1–4 employees93254.9%53.1%
5–9 employees25114.8%15.0%
10–19 employees21912.9%13.1%
20–49 employees19211.3%11.3%
50 or more employees1056.2%7.6%

Employment-size classes count establishments by mid-March 2023 employment. Establishments with no March employees are excluded from the size classes, so shares are of establishments with employees. Source: Census County Business Patterns 2023.

Why the phone matters for engineering services firms in Washington

Engineering firms handle client calls, contractor questions and agency coordination, often while staff are in the field. Routing calls to the right project engineer saves time on every project. That holds for engineering services firms in Washington as much as anywhere.

A few of the calls that come in to engineering services firms in Washington:

When nobody can pick up

Field issues sometimes need an after-hours callback; routine calls can wait until morning.

Callata voicemail is transcribed and triaged for urgency, and business-hours routing decides where calls go once you close.

Callata vs. per-seat pricing for engineering services firms in Washington

Engineering services firms in Washington average 20.3 employees, so the comparison uses a 20-person team. Priced per seat, 20 users would run $600.00 a month on RingCentral RingEX Core and $499.00 on Ooma Office Pro (month-to-month list prices, checked September 28, 2026). On Callata the same 20 people cost $399.00 a month, less than either per-seat plan.

The annual difference against RingCentral's monthly list price comes to $2,412. Some vendors discount annual contracts; the table shows month-to-month prices.

Monthly list price for a 20-person engineering firm
Provider (plan)Pricing basisPer monthPer year
Callata (Callata Office)$99 incl. 5 users, $20 per extra user$399.00$4,788.00
Quo (Starter)$19.00 per user$380.00$4,560.00
Nextiva (Core)$23.00 per user$460.00$5,520.00
Ooma (Office Pro)$24.95 per user$499.00$5,988.00
Dialpad (Standard)$27.00 per user$540.00$6,480.00
RingCentral (RingEX Core)$30.00 per user$600.00$7,200.00

Competitor prices are each vendor's published month-to-month list price per user for its lowest plan that includes business calling and texting, checked September 28, 2026: Quo Starter $19, Nextiva Core $23, Ooma Office Pro $24.95 (Essentials excludes texting; one-time $29.95 activation not included), Dialpad Standard $27, RingCentral RingEX Core $30 ($20 billed annually). Prices exclude taxes and fees and may change; annual contracts lower some competitors' prices.

Area codes in Washington

Washington has 6 geographic area codes in service according to NANPA. You can choose local numbers in the area codes your clients know, subject to carrier inventory, or port your current number for free.

Area codes in Washington by assigned exchanges
Area codeExchangesTime zoneIn service sinceOverlay with
360786Pacific1995564
509762Pacific1957none
206752Pacific1947564
425628Pacific1997none
253508Pacific1997none
56495Pacific2017206, 360

Exchanges are NANPA-assigned central office codes (NPA-NXX) in the rate centers matched to the area's named places. Source: NANPA utilized code and NPA reports.

How Callata works for engineering services firms in Washington

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

If you already have a number in Washington, porting it to Callata is free. Texting from a local number requires a one-time carrier registration (10DLC, $49), and the numbers available in any area code depend on carrier inventory when you choose them.

Optional AI agents (receptionist, sales, support or scheduler) can answer calls after hours or when nobody picks up, take messages, text, email and transfer to your team. They are billed from prepaid AI minutes at $0.25 per minute, identify themselves as AI, and may only place outbound calls to people who consented, between 8am and 9pm.

Frequently asked questions

How many engineering services firms are in Washington?

1,701 in 2023, according to Census County Business Patterns. They employed 34,507 people in mid-March.

Which Washington metro area has the most engineering services firms?

Seattle, WA, with 950 establishments in 2023.

What does a phone system cost a 20-person engineering firm?

$600.00 a month on RingCentral RingEX Core or $499.00 on Ooma Office Pro at month-to-month list prices (checked September 28, 2026); $399.00 on Callata ($99 a month with 5 users included, then $20 per additional user).

Do I need to register to text customers from a Washington number?

Yes. US carriers require business texting from local numbers to be registered (10DLC). On Callata the registration is a one-time $49 fee, and texting turns on once it is approved.