Web design and development

Web design for California businesses

We design and build custom websites for California businesses remotely from Malvern, PA, with the scope, price and schedule in writing first.

Bixby Creek Bridge on the Big Sur coast of California.

Website design for California, delivered remotely

We take on website work for California businesses remotely from Malvern, PA, and every stage is reviewed in your own browser.

Why it matters: 1,029,689 business establishments operated in the state in 2023, and 86.7% of them employed fewer than 20 people.

Go deeper: how a remote build runs, stage by stage

Health care and social assistance alone holds 14.3% of the 16,405,436 paid employees counted in the state in 2023.

Accommodation and food services adds 10.9% and administrative and support services 10.6%, so three sectors hold 35.8% of the payroll count.

The three cards above are the three largest of the 12 sectors we read for the state, by paid employees: health care and social assistance, accommodation and food services and administrative and support services.

Retail is fourth, with 1,702,044 paid employees in 106,675 establishments.

  1. Health care

    2,347,305 paid employees across 132,345 establishments in 2023; a site here needs online booking, intake forms and an accessible path for every patient.

  2. Hospitality and food

    1,788,988 paid employees across 95,952 establishments in 2023; a site here needs hours, menus and bookings that read on a phone in a hurry.

  3. Admin and support

    1,738,165 paid employees across 48,724 establishments in 2023; a site here needs clear service pages, quote requests and a careers page that fills roles.

Websites we built

Six live sites we built open here in a preview window, the same way your build is reviewed before launch.

Why it matters: A working site shows how a build loads, reads and takes an enquiry, which no mock-up can.

Go deeper: how the previews work

Preview opens the live site inside a sandboxed frame on this page. Atlas Peptides blocks framing, so its preview is a dated screenshot instead.

None of the six is presented as a California business; each one shows a job a site has to do, whatever the city.

Between them they cover a configurator that prices as you build, online scheduling, booking with reviews pulled in, a shared stock count, a quote form and a checkout.

The Phantom Arcades website, built by OneAlgorithm

Phantom Arcades

Custom home arcade cabinets

A configurator that prices the cabinet as you build it, and a page for every machine he has made.

The Inspect This Home Inspections website, built by OneAlgorithm

Inspect This Home Inspections

Home inspection

Service pages by area, online scheduling, and reports the owner updates himself.

The The Boards Professor website, built by OneAlgorithm

The Boards Professor

Medical exam tutoring

Booking, tutor profiles and reviews pulled from two platforms into one page.

The The Gorband website, built by OneAlgorithm

The Gorband

Hand block-printed cotton clothing

Moved off Shopify onto Square: one catalogue and stock count for the website and the market stall.

The Starzi Brothers website, built by OneAlgorithm

Starzi Brothers

Excavation and concrete contractors

Moved off Squarespace: a page for each service and town, and a quote form that lands in the office inbox.

The Atlas Peptides website, built by OneAlgorithm

Atlas Peptides

Research peptides

A shop with Stripe checkout and a lab certificate for every lot.

1,029,689 businesses, in public numbers

The state had 1,029,689 business establishments in 2023, +7.9% since 2018, by County Business Patterns.

By the numbers: 39,431,263 people lived in the state in 2024, −0.2% since 2019, and payrolls counted 16,405,436 employees.

1,029,689

Establishments, 2023

Census CBP 2023 · +7.9% from 954,632 in 2018 ·

86.7

% under 20 staff

Census CBP 2023 · 892,347 of 1,029,689 ·

10,962

Programming firms (541511)

Census CBP 2023 · +1.4% since 2018 ·

106.5

541511 per 10,000

Census CBP 2023 · 10,962 of 1,029,689, a ceiling ·

201

5415 per 10,000

Census CBP 2023 · 20,696 establishments ·

39,431,263

Population, 2024

Census ACS 1-year 2024 · −0.2% since 2019 ·

75,057

Change since 2018

Census CBP 2018 and Census CBP 2023 · 954,632 to 1,029,689 ·

Go deeper: what County Business Patterns counts

Of the 1,029,689 establishments, 892,347 had fewer than 20 people and 114,955 employed 20 to 99. Another 19,672 employed 100 to 499, and 2,715 employed 500 or more.

Within the 20-to-99 band, 86,596 establishments had 20 to 49 people and 28,359 had 50 to 99. The average establishment employed 15.9 of the 16,405,436 paid staff.

County Business Patterns counts employer establishments, locations with paid staff, so a sole owner with no employees is not in the 1,029,689; that is one establishment for every 38.3 residents.

NAICS 541511, custom computer programming, includes custom web page design and all other custom software, so 106.5 per 10,000 businesses is a ceiling on web-design firms in the state.

Health care leads, with 2,347,305 employees

Health care and social assistance employed 2,347,305 people in the state in 2023, the most of the 12 sectors we read.

Why it matters: who a site talks to follows the sector mix, and accommodation and food services comes next at 1,788,988 employees.

  • Health care: 17.7 employees per establishment; booking and intake matter most.
  • Hospitality and food: 18.6 employees per establishment; hours and menus must read fast.
  • Admin and support: 35.7 employees per establishment; service pages and careers carry it.
Go deeper: who these pages are written for

132,345 health care and social assistance establishments in the state need online booking, intake forms and an accessible path for every patient. The 95,952 in accommodation and food services need hours, menus and bookings that read on a phone in a hurry.

Administrative and support services counts 48,724 establishments that need clear service pages, quote requests and a careers page that fills roles, and retail trade, fourth at 1,702,044 employees, needs stock that matches the till and a phone checkout.

Professional, scientific and technical services ranks fifth at 1,430,821 employees, and the 12 sectors we read cover 14,155,201 of the 16,405,436 paid employees in the state.

Together the four employ 7,576,502 people, 46.2% of the payroll count; the sector figures shape the scope, and the six sites above are our delivered work.

California: the four largest of 12 sectors by paid employees, Census CBP 2023
SectorPaid employees, 2023Establishments, 2023
Health care2,347,305132,345
Hospitality and food1,788,98895,952
Admin and support1,738,16548,724
Retail1,702,044106,675

10,962 custom programming firms statewide

10,962 custom computer programming establishments (NAICS 541511) operated in the state in 2023, +1.4% since 2018.

Yes, but: that code also covers all custom software, so 106.5 per 10,000 businesses is a ceiling on web-design firms, not a count.

  • Graphic design (NAICS 541430): 2,709 establishments in 2023.
  • Marketing consulting (NAICS 541613): 9,390 establishments in 2023.
  • Advertising agencies (NAICS 541810): 2,462 establishments in 2023.
Go deeper: how to compare the firms on your list

With 13,671 programming and graphic design establishments in the state, ask each firm for live sites you can open, who will own the code and domain, and a written scope.

The wider NAICS 5415 group, computer systems design and related services, counted 20,696 establishments, 201 per 10,000 businesses.

Marketing consulting (9,390) and advertising agencies (2,462) often sell websites too, so the full field in the state is wider than the programming count.

Custom programming establishments went from 10,809 in 2018 to 10,962 in 2023, while graphic design stood at 2,709, 26.3 per 10,000 businesses.

Those 10,962 programming firms employed 182,743 people, about 16.7 each. The wider 5415 group employed 299,029.

From 954,632 to 1,029,689 businesses since 2018

Establishments in the state rose from 954,632 in 2018 to 1,029,689 in 2023, a change of +7.9%.

The bottom line: educational services grew the most of the 12 sectors, +15.3% in establishments, while wholesale trade moved −6.1%.

  • 20 to 99 employees: 112,968 establishments in 2018, 114,955 in 2023.
  • 100 to 499 employees: 19,421 in 2018, 19,672 in 2023.
  • 500 or more employees: 2,414 in 2018, 2,715 in 2023.
Go deeper: what the change means for a website

Educational services went from 14,926 to 17,203 establishments between 2018 and 2023; wholesale trade went from 58,226 to 54,671.

Health care and social assistance came second, +14.8%, and construction third, +11.9%.

That is a net gain of 75,057 establishments: each new one needs a first site, and each established one carries addresses and rankings a rebuild must keep.

Paid employees went from 15,223,664 to 16,405,436 over the same years, +7.8%. Population moved −0.2% from 2019 to 2024, to 39,431,263.

Ranked 1st of 64 places by businesses

The state ranks 1st of the 64 places we build pages for by business establishments, and 18th for programming firms per 10,000 businesses.

By the numbers: population growth since 2019 ranks 59th of 64, and the share of establishments under 20 staff ranks 10th.

Go deeper: why every place is measured the same way

Every place page uses the same Census tables, so these ranks compare like with like: 1,029,689 establishments here against the 64 places' own counts, 26th for their change since 2018.

Programming firms run 106.5 per 10,000 businesses here against a median of 85.2. The under-20 share is 86.7% against 84.4%.

The 64 are the places whose web design searches clear 500 a month in Semrush's exact data, state pages counted with any places folded in; this one draws 850, 50th of the 134 places we measured nationwide.

California against the median of the 64 place pages, Census CBP 2023 and ACS 2024
MeasureHereMedian of 64
Programming per 10,000106.585.2
Establishments since 2018+7.9%+5.2%
Population since 2019−0.2%+4.2%
Under 20 staff86.7%84.4%

How a California web project runs

A project here runs in the same five stages as every build of ours, from agreeing what the site is for to launch.

What you get: the scope, price and schedule in writing at stage two, before anything is designed or built.

Go deeper: what happens at each stage

Stage one fixes who the site talks to; in the state, where health care and social assistance employs 2,347,305 people, that answer often sets the integrations.

Stage five hands the site over in your own accounts, a handover any of the 20,696 systems design establishments in the state could pick up from.

For the 95,952 accommodation and food services establishments here, stage two usually lists hours, menus and bookings that read on a phone in a hurry.

Diagram of the five stages of a California web project, stacked for phones01Agree the purposeaudience · job · connections02Scope in writingpages · price · dates03Design in the browserreal content · real widths04Build and wire it upcode · forms · CRM · analytics05Launch and hand overyour repo · domain · hostingDiagram of the five stages of a California web projectA rail runs through five stations: agree what the site is for; scope, price and schedule in writing; design in the browser; build and wire it up; launch, hand over and stay on.01Agree the purposeaudience · job · connections02Scope in writingpages · price · dates03Design in the browserreal content · real widths04Build and wire it upcode · forms · CRM · analytics05Launch and hand overyour repo · domain · hosting
The five stages in order; the written scope, price and schedule come at stage two.
  1. Agree what the site is for

    Who the site talks to, what it must get them to do, and what it connects to.

  2. Scope, price and schedule in writing

    Pages, integrations, price and dates on paper before any design starts.

  3. Design in the browser

    Real content at real widths, reviewed on your own phone as it takes shape.

  4. Build and wire it up

    Code, forms, CRM, analytics and accessibility checks, in one pass.

  5. Launch, hand over, stay on

    The site goes live in your accounts, and we stay on for support.

Working with us from California

California runs on Pacific time, so our 9-to-5 Eastern day is 6 a.m. to 2 p.m. there.

The bottom line: the office answers (610) 890-9711 Monday to Friday, 6 a.m. to 2 p.m. local time, the day 10,962 programming firms here keep.

OneAlgorithm625 Swedesford Rd, Unit B, Malvern, PA 19355(610) 890-9711Mon–Fri 9–5Google Business Profile: 5.0 from 6 reviews, read 23 Oct 2026 Updated 24 October 2026

Do you have an office in California?

No. Our one office is in Malvern, PA, and projects here run remotely, with every stage reviewed in your own browser.

Go deeper: calls, reviews and where the work happens

Calls and screen-shares cover the whole build, and you review the work in your own browser between them; no branch office or answering service sits in between.

Web design questions from the state

Not answered here? Call the office: (610) 890-9711

Yes. We take on website work for California businesses remotely from Malvern, PA, and every stage is reviewed in your own browser. You deal directly with the people designing and coding the site, and calls are set in Pacific hours, the clock the state's 1,029,689 establishments keep.

The scope sets the price, not the ZIP code: pages, integrations and what the site must do, for one of the 892,347 small establishments here or a larger one. You get the price and schedule in writing first; advertisers paid about $8.98 a click for the main web design phrasing here (Semrush).

Hire a designer when the site has to book, quote, sell or connect to a CRM; a builder fits a site a standard template can serve. In the state, 86.7% of establishments employ fewer than 20 people, so we say which route fits before quoting anything.

Yes. Titles, headings, page speed and schema go in while the site is built, and Search Console is connected at launch, so the 850 monthly searches (top phrasing 480) in the table above are targeted from day one. “web design california” alone draws 480 a month, by Semrush’s count.

Yes. That kind of site is scoped like any build of ours: science explained plainly, investor and careers pages, and forms routed to the right team, each part priced in writing before work starts. The state had 143,863 professional, scientific and technical services establishments in 2023, by County Business Patterns.

Yes. That kind of site is scoped like any build of ours: a catalogue, stock that agrees with the counter and a checkout that works on a phone, each part priced in writing before work starts. The state had 106,675 retail trade establishments in 2023, by County Business Patterns.

Either can work; what matters is live sites you can open, who owns the code and a written scope. The state had 10,962 custom programming and 2,709 graphic design establishments in 2023, and a firm keeps the work moving when one person is away.

Open the live sites a firm has built, ask who owns the code, domain and hosting, and get the scope and price in writing. With 13,671 programming and graphic design establishments in the state, and 106.5 programming firms per 10,000 businesses, those three checks shorten the list quickly.

Start your California website project

Tell us what the site has to do, and the scope, price and schedule come back in writing before anything is built.

What to have ready

  • What the site has to do: sell, book, explain or log people in
  • Two or three sites you like, and why
  • What you already have: domain, hosting, content, logins

What happens next

  1. 01Send it on the contact page, or call the office.
  2. 02A person at OneAlgorithm reads it and replies.
  3. 03If it fits, the written scope, price and schedule follow.

Start a project

Topic · Website · California

What does the site have to do? Tell us on the contact page; the topic is already filled in.

Start a project

Prefer to talk it through?

(610) 890-9711

OneAlgorithm · 625 Swedesford Rd, Unit B, Malvern, PA 19355 · Mon–Fri 9–5

Where these figures come from

Every Census figure on this page covers the California (Census state FIPS 06). County Business Patterns (CBP) counts employer establishments; the American Community Survey (ACS, 1-year) gives population. A person at OneAlgorithm read them on 24 October 2026. The query each one came from is printed as text, not linked.

FigureValueYear
Establishments, 20231,029,6892023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Business establishments, 2018954,6322018
api.census.gov/data/2018/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Paid employees, mid-March 202316,405,4362023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Population, 202439,431,2632024
api.census.gov/data/2024/acs/acs1?get=NAME,B01003_001E&for=state:06
Population, 201939,512,2232019
api.census.gov/data/2019/acs/acs1?get=NAME,B01003_001E&for=state:06
Programming firms (541511)10,9622023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=541511&EMPSZES=001&for=state:06
NAICS 541511 establishments, 201810,8092018
api.census.gov/data/2018/cbp?get=ESTAB,EMP&NAICS2017=541511&EMPSZES=001&for=state:06
Computer systems design establishments (NAICS 5415)20,6962023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=5415&EMPSZES=001&for=state:06
Establishments with 20-49 employees, 202386,5962023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Establishments with 50-99 employees, 202328,3592023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Establishments with 100-249 employees, 202315,4912023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Establishments with 250-499 employees, 20234,1812023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Establishments with 500-999 employees, 20231,5342023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Establishments with 1,000 or more employees, 20231,1812023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Health care and social assistance: paid employees2,347,3052023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=62&EMPSZES=001&for=state:06
Health care and social assistance: establishments132,3452023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=62&EMPSZES=001&for=state:06
Accommodation and food services: paid employees1,788,9882023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=72&EMPSZES=001&for=state:06
Accommodation and food services: establishments95,9522023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=72&EMPSZES=001&for=state:06
Administrative and support services: paid employees1,738,1652023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=56&EMPSZES=001&for=state:06
Administrative and support services: establishments48,7242023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=56&EMPSZES=001&for=state:06
Retail trade: paid employees1,702,0442023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=44-45&EMPSZES=001&for=state:06
Retail trade: establishments106,6752023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=44-45&EMPSZES=001&for=state:06
% under 20 staff · computed: total establishments minus the six size classes of 20+ employees, divided by the total86.72023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
541511 per 10,000 · computed: NAICS 541511 establishments / total establishments x 10,000106.52023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=541511&EMPSZES=001&for=state:06 · api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
5415 per 10,000 · computed: NAICS 5415 establishments / total establishments x 10,0002012023
api.census.gov/data/2023/cbp?get=ESTAB,EMP&NAICS2017=5415&EMPSZES=001&for=state:06 · api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06
Change since 2018 · computed: total establishments 2023 minus 201875,0572023
api.census.gov/data/2023/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06 · api.census.gov/data/2018/cbp?get=ESTAB,EMP,EMPSZES&NAICS2017=00&for=state:06

U.S. Census Bureau · census.gov/programs-surveys/cbp.html · census.gov/programs-surveys/acs

Where the search figures come from

Monthly US searches, cost per click and keyword difficulty from Semrush Keyword Overview (Bulk Analysis, US database, exact match), pulled 2026-10-24 13:05-13:15 ET. A phrase Semrush has no data for counts as zero. Every place we considered is ranked by the same sum: California is 50 of 134.

PhraseSearches a monthCost per clickDifficulty
web design california480$8.9834
web design company california260$13.7641
website development california110no bid data25

Google and Bing autocomplete, read 24 October 2026, also completed: “web development california”, “web design agency california”, “web design services in california”. Autocomplete shows phrasings people type, not volumes.

Semrush · semrush.com/analytics/keywordoverview · Google and Bing autocomplete

Photo credit

Bixby Creek Bridge on the Big Sur coast of California.

CreditDiliff / Wikimedia Commons / CC BY-SA 3.0 (cropped, resized)
LicenseCC BY-SA 3.0 · creativecommons.org/licenses/by-sa/3.0
Sourcecommons.wikimedia.org/wiki/File:Bixby_Creek_Bridge,_California,_USA_-_May_2013.jpg
Changescropped to 16:9, resized

Our Google Business Profile figures

What our Google listing showed when a person at OneAlgorithm read it. We quote the figures; the reviews are not marked up as ratings on this page.

ListingOneAlgorithm Consulting
Rating5.0 from 6 reviews
Place idChIJnQw01SfzxokRJhcvpzCljCE
Read on23 October 2026
Map linkmaps.app.goo.gl/kVEeTz9dCyB64CGk6

Hero photograph: Diliff / Wikimedia Commons / CC BY-SA 3.0 (cropped, resized) · creativecommons.org/licenses/by-sa/3.0