Custom website design and development
From Strategy to Support
Think bigger. Build smarter. Move faster — with technology solutions tailored to you.
Websites we built, open them here
OneAlgorithm is a web design and development company in Malvern, PA, and these six sites are our work: open any of them here.
Why it matters: a live site shows what a template cannot, how it loads, reads and sells on the device in your hand.
Go deeper: how the previews work
The live site loads inside a sandboxed frame on this page, so you use it without leaving. A site that refuses framing shows our full-page capture, with its date in the stamp. The sandbox blocks top navigation and downloads; the framed site's own scripts, fonts and media are its own and load only when you press Preview. The domain link under each window opens the site itself in a new tab.
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.
Inspect This Home Inspections
Home inspection
Service pages by area, online scheduling, and reports the owner updates himself.
Lou is Louis's fatherinspectthishomeinspections.com (opens in a new tab)
The Boards Professor
Medical exam tutoring
Booking, tutor profiles and reviews pulled from two platforms into one page.
The Gorband
Hand block-printed cotton clothing
Moved off Shopify onto Square: one catalogue and stock count for the website and the market stall.
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.
Atlas Peptides
Research peptides
A shop with Stripe checkout and a lab certificate for every lot.
What is custom website development?
Custom website development means a site designed and coded for one business, its content and its systems, instead of a template filled in.
Why it matters: the page you are reading was built this way, and the build stage beside it shows the same process in miniature.
- Designed around one business, from its content outward
- Coded, not configured: no theme, no page builder
- Owned outright: code, domain and hosting in your name
Go deeper: what custom excludes, and how this page was built
A builder or a theme rents you a layout: you fill the slots it offers and pay monthly for what you cannot change. Custom work starts from your content and your systems and ends in code you own.
The hero on this page is the same idea in miniature: a particle field rasterised from live text, drawn on a canvas in your browser, no library, built for this site after the published 21st.dev “Magic Text Reveal” pattern.
- 01grid · 12 col · a restaurant
- 02blocks · nav, hero, sections
- 03palette · 6 tokens
- 04type · headline, body, buttons
- 05imagery · drawn
- 06checks · contrast · responsive
- 07press
- 01grid · 12 col · a roofing contractor
- 02blocks · nav, hero, sections
- 03palette · 6 tokens
- 04type · headline, body, buttons
- 05imagery · drawn
- 06checks · contrast · responsive
- 07press
- 01grid · 12 col · a dental clinic
- 02blocks · nav, hero, sections
- 03palette · 6 tokens
- 04type · headline, body, buttons
- 05imagery · drawn
- 06checks · contrast · responsive
- 07press
What we design and build
We design and build marketing and lead-generation sites, online stores and web applications, wired to the forms, CRM, bookings and payments you use.
What you get: one team for design, code and integrations, with the scope and price written down before the build starts.
Marketing and lead-generation sites
Service pages, a phone that is one tap away, and forms that reach the inbox and the CRM.
Online stores
Catalogue, stock and checkout on the platform that fits, with one count for the website and the counter.
Web applications
Sites that log people in, take bookings, price a build or run a process.
Integrations: forms, CRM, bookings, payments
Wired to the systems you already run, with a record when a sync fails.
Go deeper: what each build includes, and which site is which
Which of the six sites is which: Phantom Arcades is a web application and a shop, with an eight-cabinet 3D configurator that prices the machine as you build it. The Gorband and Atlas Peptides are online stores; The Gorband runs on Square, one catalogue for the website and the market stall. Inspect This Home Inspections, The Boards Professor and Starzi Brothers are lead-generation sites, with online scheduling, booking and a quote form that lands in the office inbox.
Every build includes the forms, the analytics and the search groundwork; the integrations are named in the written scope.
Website redesign that keeps what already works
A website redesign replaces the design and code while keeping your domain, your content and every address search engines already know, each one redirected.
Why it matters: a redesign that drops old URLs loses the rankings the old site earned, so the redirect list is written before the first screen is designed.
- Redirect list first: every old address maps to a new one
- Content audit: keep what ranks, rewrite what does not
- Same domain, same accounts, new code
Measured on one redesign ·
Go deeper: how a redesign keeps your rankings
How a redesign keeps your rankings
We crawl the old site first and map every address to its new one, so the redirect list exists before the first screen is designed. The content audit keeps what ranks and rewrites what does not. The redirects are tested before launch, and Search Console is read after it.
Working with the site you already have
Often, yes. Sometimes the honest answer is that rebuilding is cheaper than fixing, and we tell you which one you are looking at rather than quoting whichever is bigger.
Phantom Arcades, second screen
Custom home arcade cabinets
A configurator that prices the cabinet as you build it, and a page for every machine he has made.
Website design for small businesses
Small business website design is scoped to three jobs: be found, explain the service, and turn a visit into a call, booking or order.
What we do: we size the build to that list, so a home inspector, a tutor or a contractor pays for pages that work.
- Be found: Business Profile, titles, schema and Search Console from day one
- Explain: service pages in the owner's words, by area where it matters
- Convert: phone first, forms to email and CRM, booking where it fits
Go deeper: what a small business site has to do
What a small business site has to do
- Business Profile linked, titles and schema written, Search Console and analytics connected at launch
- Forms to the inbox and the CRM; booking where the business books; the phone one tap away
- Service pages in the owner's words, and a page per area where the work is local
Three small-business sites we built
Inspect This Home Inspections: service pages by area, online scheduling, and reports the owner updates himself. The Boards Professor: booking, tutor profiles and reviews pulled from two platforms into one page. Starzi Brothers: moved off Squarespace to a page for each service and town, and a quote form that lands in the office inbox.
Inspect This Home Inspections, second screen
Home inspection
Service pages by area, online scheduling, and reports the owner updates himself.
The Boards Professor, second screen
Medical exam tutoring
Booking, tutor profiles and reviews pulled from two platforms into one page.
Starzi Brothers, second screen
Excavation and concrete contractors
Moved off Squarespace: a page for each service and town, and a quote form that lands in the office inbox.
How a custom website build runs
A custom website build runs in five stages, from agreeing what the site is for to launch and support, with the work visible throughout.
What you get: the scope, price and schedule in writing before stage three, and a site in your own accounts at stage five.
Agree what the site is for
Who it is for, what it must do, and what it connects to, agreed before anything is designed.
Go deeper: what stage 01 covers
- Who the site is talking to, and what it has to make them do
- The systems it connects to: CRM, booking, payments, inventory
- What exists today: domain, hosting, content, logins
- Whether a smaller site does the job; we say so if it does
Scope, price and schedule in writing
The proposal: pages, integrations, price and dates, signed before the build starts.
Go deeper: what stage 02 covers
- Pages and layouts, named
- Integrations and the content you supply
- The price against that list, and the dates
- What we would cut if the number is wrong for you
Design in the browser
Real content at real widths, reviewed in your own browser, not a slide deck.
Go deeper: what stage 03 covers
- Designed at 390 pixels wide first, then opened out
- Your text and photos, not placeholders
- A link you open on your own phone
- Changes made in the browser, where you see them
Build and wire it up
Code, forms, CRM, analytics and the accessibility checks, with the site in your repository throughout.
Go deeper: what stage 04 covers
- Forms to the inbox and the CRM, with a record when one fails
- Analytics, Search Console and the Business Profile connected
- WCAG 2.1 AA: automated rules, then a keyboard pass
- Source in your repository from the first commit
Launch, hand over, stay on
Your repository, domain and hosting; support under the proposal's terms.
Go deeper: what stage 05 covers
- DNS, HTTPS and security headers set at launch
- Repository, domain and hosting in your accounts
- Written notes another developer can follow
- Support scoped in the proposal, project by project
How much does a website cost?
A website's cost is set by its scope: page layouts, existing content, what it connects to, and whether it sells, books or logs people in.
The bottom line: tell us what the site has to do and you get the price and the schedule in writing before anyone builds anything.
Go deeper: how the written scope works
The proposal lists the pages and layouts, the integrations, the content we need from you and the dates, with the price against that list. If the number is wrong for you, we say what we would cut to get there.
After signing, the two things that move a quote are content that has not been written and feedback that sits unanswered, so both carry dates in the schedule.
| What sets the price | What it changes | What we ask you |
|---|---|---|
| Page layouts | How many genuinely different layouts the site needs, not how many pages. | Which pages share a layout, and which need their own. |
| Content | Whether the writing and photography exist or have to be made. | What you have today: text, photos, logos, brand files. |
| Integrations | What the site must talk to: CRM, booking, payments, inventory, email. | The systems you run, and who holds their logins. |
| Store, booking or login | A shop, a calendar or an account area adds a system to run, not a page. | What has to be sold, booked or kept behind a login. |
| Redesign vs new | A redesign carries a redirect list and a content audit a new site does not. | Your current address, its pages, and what already ranks. |
Squarespace, Wix or WordPress versus custom
Squarespace, Wix or WordPress suits standard layouts on a monthly fee; custom code suits a site that must do something specific or be owned outright.
Yes, but: the table below says which is which, including the cases where the builder wins.
Go deeper: when we say use the builder
If you need a handful of pages, you are happy to lay them out yourself, and nothing has to connect to another system, a builder gets you online this week for a monthly fee, and that is a sensible answer. It stops working when you want something the template cannot do, when the site has to integrate with software you already run, when performance starts costing you visitors, or when the monthly fee never ends and the site cannot move off the platform. A built site costs more once and then it is yours.
| Compared on | Builder | Custom |
|---|---|---|
| Cost basis | Lower to start; a monthly fee for as long as the site is up.Builder wins | Paid once for the build; hosting and domain at cost, in your name. |
| Ownership | You rent the layout. The content is yours; the site cannot leave the platform. | Code, domain and hosting in your accounts; another developer can pick it up. |
| Integrations | The apps in its marketplace; anything else is a workaround. | Whatever you run, wired directly: CRM, booking, payments, inventory. |
| Performance ceiling | Set by the theme and the scripts it loads on every page. | Set by a budget we write down: images, scripts and fonts per page. |
| Accessibility | Depends on the template; fixes wait for the platform. | Built to WCAG 2.1 AA and tested; fixes go in the code. |
| Exit | Export the content; the design and the layout stay behind. | Move the repository and the domain; there is nothing to export. |
ADA compliance and accessible websites
An ADA compliant website is one people with disabilities can use; we build and test it against WCAG 2.1 AA.
What we do: keyboard access, contrast, text alternatives and structure, checked with the automated rules an auditor runs, then by keyboard.
- WCAG 2.1 AA as the written standard in every proposal
- Automated rules on every build, then a keyboard pass
- No accessibility overlay: fixes go in the code
Go deeper: the legal question, and how we test
Do websites have to be ADA compliant?
For state and local governments, yes: the Department of Justice's 2024 rule under Title II adopts WCAG 2.1 AA, with compliance dates of 26 April 2027 for entities of 50,000 people or more and 26 April 2028 for smaller entities and special districts, after the Interim Final Rule published on 20 April 2026. For private businesses the Department of Justice has no regulation setting out detailed standards and calls WCAG helpful guidance (its web guidance of 18 March 2022). Ask counsel about your own obligations; we build to WCAG 2.1 AA either way.
How we test accessibility
Press Tab now: the ring you see is the one in the figure. Every build runs the automated rules an auditor runs, then a keyboard pass for what no rule catches: order, focus, names, and text contrast at 4.5:1 or better.
After launch: support, hosting and security
After launch the site runs on hosting and a domain you control, with HTTPS and security headers in place, and we stay on for support.
Why it matters: the one thing a new site must not do is depend on the people who built it.
Hosting and domain in your name
Deployed where you control it, with DNS in your account, not ours.
Security: HTTPS and security headers
HTTPS and security headers set at launch, as on this site.
Updates and support after launch
We stay on under the written proposal's terms; every project is scoped on its own.
Go deeper: what the handover includes, and how support is scoped
At handover you hold the repository, the domain and its DNS, the hosting account and the written notes another developer would need. HTTPS and the security headers are set at launch; this site runs the same way.
Support after launch is scoped in the written proposal, project by project: there is no standard plan, so no standard price, response time or term is printed here. Updates, content changes and the checks after a browser or platform change are agreed the same way.
- REPO
Source in your own repository, from day one and at handover
- DNS
Domain and DNS in your account, not ours
- HOST
Deployed somewhere you control, and can move
- DOCS
Written so another developer can pick it up
What we build with, and what you keep
We build with HTML, CSS and TypeScript and hand over the source, the domain and the hosting, written so another developer can pick it up.
What you get: the website and the code are yours outright when it is finished, with no license to keep paying to stay online.
Go deeper: what transfers to you, and what we build on
Platforms we build on
HTML, CSS and TypeScript, and three.js where a 3D configurator earns it. Stores run on the platform that fits the business: The Gorband is on Square; Atlas Peptides checks out through Stripe.
What transfers to you
“Written so another developer can pick it up” means a README, the build scripts and the deploy steps in the repository, no proprietary builder in the chain, and nothing that stops working when we are not in the room.
How a new website gets found
A new website gets found when its structure, titles and schema are built in and Search Console, analytics and the Business Profile connect at launch.
What we do: the build includes that groundwork; search, ads and follow-up are separate services on the road map below.
- Stop 1
Your website
Built, launched, and owned by you — the code, the domain and the hosting.
You are here - Stop 2
Be found in search
Pages written for the questions people actually type, and a Google Business Profile audit — claimed, complete, reviews answered.
- Stop 3
Reach people searching now, and people not yet
Google Ads for the searches happening today. Social for the people who have not started looking.
- Stop 4
Follow up without dropping anyone
Email that goes out on its own, and a CRM set up to show who replied and who went quiet.
- Stop 5
Fit the tools to the business
An audit of what you already pay for, then one of three answers: integrate it, replace it, or build what is missing.
Who we build websites for
We build websites for small and mid-sized US businesses and for the construction, manufacturing, e-commerce and public-sector organizations on our industry pages.
Why it matters: what changes between sectors is what the site connects to and the standard it is judged against, not the build.
Website development by industry
Web design for Philadelphia and Chester County
Where we work: web design by state
Where we work: the largest metros
Go deeper: what changes by sector
Construction: the owner-facing project pages and whatever sits behind a login, and whether either can read from the systems that hold the job data. Manufacturing: product and specification catalogues that stay in step with the system of record instead of being retyped into a CMS. E-commerce: the surrounding pages, the joins to stock and support, and a checkout that is not the slow part. Government and the public sector: Section 508 and WCAG conformance become the acceptance criteria, which is how we build anyway.
How to choose a web design company
Choose a web design company by what it puts in writing: code and domain ownership, hosting, scope and price, and the speed and accessibility measures.
The bottom line: ask the three questions below of every firm you talk to, including us.
- Who owns the code and the domain when it is finished?
- Where is it hosted, and who holds the login?
- How will speed and accessibility be measured, and when?
Go deeper: what to get in writing
The scope: pages and layouts, integrations, the content you supply, and the dates. The price against that scope. Ownership: the repository, the domain and the hosting account in your name, named in the proposal. The standards: WCAG 2.1 AA and the performance budget, and how both are checked before launch. Support: what happens after launch, and on what terms. A firm that will not write these down is asking you to take its word.
A web design company you can check
OneAlgorithm is a web design and development company in Malvern, PA, founded in 2020 and rated 5.0 from 6 Google reviews (read 23 October 2026).
By the numbers: three of those six reviews come from the clients whose sites you can open above.
5.0
Google rating
6 Google reviews · read 23 October 2026 ·
Where we are
OneAlgorithm · 625 Swedesford Rd, Unit B, Malvern, PA 19355
(610) 890-9711 · Mon–Fri 9–5
Chester County, PA · Delaware County, PA · Montgomery County, PA · Bucks County, PA · Philadelphia County, PA · New Castle County, DE
Founded 2020 · PA entity 7068842 ·
Most work runs remotely; in-person sessions when the project calls for them, easiest across the Philadelphia region.
Updated 24 October 2026
Go deeper: how to check us
Open our Google listing (OneAlgorithm Consulting, Malvern, PA) and read the six reviews; three are from Dennis, Lou and Sean, whose sites are on this page. Open the sites themselves from the windows above. Read the case studies, by Louis Rubino, for the figures and their sources.
Website design and development questions
Not answered here? Call the office: (610) 890-9711
The schedule goes in writing next to the price, so you get a date instead of a guess. What sets it: how much content exists, how fast feedback comes back, and how many systems the site connects to. Your project starts when the scope is agreed.
Yes. A redesign keeps your domain, your content and every address search engines already know, each one redirected. Sometimes rebuilding is cheaper than fixing, and we tell you which one you are looking at rather than quoting whichever is bigger.
Usually one of three things: images uploaded at camera size, third-party scripts fetching code before the page can finish, or a theme that loads everything on every page. Measure first: a page-speed report says which one you have, and the fix is often one image and two scripts.
Yes: it is built at 390 pixels wide first, then opened out to a laptop. Tap targets are sized for thumbs, text stays readable without zooming, nothing scrolls sideways, and we test it in iPhone and Android browser profiles at real widths, not only in a preview pane.
Yes for custom work: a site designed and coded for one business is written in HTML, CSS and TypeScript. No for a builder such as Squarespace or Wix, where you fill a template and pay monthly. The comparison table on this page says which suits which job.
A website design company plans, designs and builds websites for other businesses, then hands them over to run. Ours designs the pages, writes the code, wires the forms, CRM, bookings and payments, launches the site in your own accounts and stays on for support.
Our office is at 625 Swedesford Rd, Unit B, Malvern, PA 19355. Most work runs remotely, with in-person sessions when the project calls for them, easiest across the Philadelphia region. You review the site in your own browser as it is built.
Your accountant decides how to book it. Our proposals separate design, development and running costs, so the split is clear whichever treatment applies to you.
Both. The moving background is our brand film; the lettering in front of it is a canvas particle system running in your browser, drawn from the two lines of the heading and built for this site after the published 21st.dev Magic Text Reveal pattern. Move your cursor across the words and they react.
Tell us what the site has to do
Describe what the site needs to do and you get the scope, price and schedule in writing before anyone builds anything.
What to have ready
- What the site has to do (sell, book, explain, log people in)
- The sites you like, and why
- What you have: domain, hosting, content, logins
What happens next
- 01Send it on the contact page, or call
- 02A person at OneAlgorithm reads it and replies
- 03If it fits, the written scope and price follow
Start a project
Topic · Website
What does the site have to do? Tell us on the contact page; the topic is already filled in.
Start a projectPrefer to talk it through?
(610) 890-9711OneAlgorithm · 625 Swedesford Rd, Unit B, Malvern, PA 19355 · Mon–Fri 9–5