Written rule spec
Your rules, settings, and edge cases written down and approved before any code is written.
The Problem
Your Store Runs on Snippets Nobody Wants to Touch
Stores reach this point slowly. Each missing feature gets a plugin, a snippet, or a theme edit, until a routine update breaks the one rule your business depends on.
01 · Snippets
Key business rules live in functions.php snippets.
Rules move into one documented plugin that survives theme changes and updates.
02 · Plugin pile
Three plugins each do part of one job.
One custom plugin replaces the overlap, so checkout loads less code.
03 · Block checkout
The new block checkout ignores your old customizations.
We build with the Store API and Additional Checkout Fields for blocks.
04 · Updates
Every WooCommerce update risks breaking a custom rule.
Each release is tested against the current and previous WooCommerce versions.
Your wholesale discount lives in a snippet a freelancer pasted into functions.php three years ago. A second plugin adds a delivery date field, and a third hides a shipping method for one region. Each works alone. Together, they slow checkout and break whenever WooCommerce or your theme updates. The new block checkout ignores two of them. Every fix means another plugin, and nobody is sure which one is doing what.
We start by mapping the rules your store really needs and checking whether an existing extension already covers them. When it doesn't, we write one plugin that owns those rules. It uses WooCommerce's own hooks, declares HPOS compatibility, and supports the block checkout. Then we test it against the current and previous WooCommerce releases. You get one plugin with a clear purpose instead of a pile of fragile patches.
Built on WooCommerce hooks
Your logic hooks into WooCommerce's actions and filters, so core and theme files stay untouched.
Ready for HPOS and blocks
Every plugin declares HPOS compatibility and works with the Cart and Checkout blocks.
Buy before we build
If a trusted extension already covers your rule, we'll point you to it before quoting.
Our WooCommerce Plugin Development Process
From Rule Mapping to a Tested Plugin in Five Steps
You approve the rules before we write code, test the plugin on your own staging store, and receive the source, documentation, and release notes at handover.
We look at the feature you need, your current plugins and snippets, and your checkout setup. You get an honest answer on whether to buy an existing extension or build a custom one.
What's Included
What You Get From WooCommerce Custom Plugin Development
Every plugin ships with the same essentials: a written spec, clean code on WooCommerce hooks, admin settings, block checkout support, tests, and documentation.
Compare Options
DeveloperLook vs Marketplace Extension vs Freelancer
A marketplace extension is faster and cheaper when it fits your rules, and a freelancer suits a quick tweak. A WooCommerce plugin development company fits when the logic is yours alone.
| Feature | DeveloperLookBest fit | Marketplace extension | Freelancer |
|---|---|---|---|
| Fit to your rules | Built around your exact rules | Close, with settings to adjust | Depends on the brief |
| Code approach | WooCommerce hooks, no core edits | Vendor's own approach | Often a functions.php snippet |
| HPOS and blocks | Declared and tested on your store | Varies by vendor | Often missed |
| Testing | Automated tests on 2 releases | Vendor tests generic stores | Manual, on your live store |
| Speed to start | Spec within 1 week | Install today | Often within days |
| Updates | Changelog and tested releases | Included with yearly license | When they're available |
| Ownership | Your code, your repository | Licensed, not owned | Unclear without a contract |
| Cost | Fixed price from $900 | Lowest yearly fee | Lowest hourly rate |
DeveloperLook
Marketplace extension
- Fit to your rules
- DeveloperLook: Built around your exact rulesMarketplace extension: Close, with settings to adjust
- Code approach
- DeveloperLook: WooCommerce hooks, no core editsMarketplace extension: Vendor's own approach
- HPOS and blocks
- DeveloperLook: Declared and tested on your storeMarketplace extension: Varies by vendor
- Testing
- DeveloperLook: Automated tests on 2 releasesMarketplace extension: Vendor tests generic stores
- Speed to start
- DeveloperLook: Spec within 1 weekMarketplace extension: Install today
- Updates
- DeveloperLook: Changelog and tested releasesMarketplace extension: Included with yearly license
- Ownership
- DeveloperLook: Your code, your repositoryMarketplace extension: Licensed, not owned
- Cost
- DeveloperLook: Fixed price from $900Marketplace extension: Lowest yearly fee
Projects We've Built
Ecommerce Store Projects We Have Built
Online stores and admin dashboards our team designed and built for furniture and fashion brands. They show the checkout, product, and admin logic that custom plugins extend.
Sefinix Furniture Ecommerce Store and Dashboard
- Furniture
- Dashboard
- E-commerce
Xinomin Fashion Ecommerce Website and Admin Dashboard
- Fashion
- E-commerce
- Dashboard
Fuison Fashion Ecommerce Website and Dashboard
- Fashion
- Dashboard
- E-commerce
Modeverse Ecommerce Web Design & Development
- Fashion
- Retail
- E-commerce
What Our Clients Say
What Clients Say After Launch
Feedback from teams we have built online stores and websites for.
We had a pretty specific idea of what we wanted our website to become, but I wasn’t sure how easily we could explain all of it to a development team. There were quite a few moving parts, and we were working toward a deadline, so I expected a few things to get lost along the way. That never really happened. They understood what we were trying to achieve, kept us updated throughout the process, and got everything ready within the agreed timeline. The final site feels much easier to navigate, works beautifully on mobile, and is noticeably smoother for our customers. It was a huge relief seeing the original idea actually turn into the website we had in mind.
The mobile experience is probably my favourite part of the new site. We had spent a lot of time making sure the desktop version looked right, and the team kept pushing us to think about how everything would actually feel on a phone too. They were right. The navigation is clean, the interactions feel natural, and everything we’ve tested so far works exactly as it should. They also went through the links, forms, integrations, and other details more than once before launch, which I really appreciated. And even after going live, we could still reach out when something came up. The whole process felt friendly, organised, and surprisingly straightforward.
What I appreciate most is that the website is actually easy for us to manage now. We can update content ourselves instead of sending a developer a message every time we need to change something small. They also paid attention to the technical SEO side, which mattered to us because we didn’t want a new website to create problems for the traffic we already had. I’ve probably asked more questions than I should have since launch, but every question has been handled patiently and without any fuss. The team is easy to work with, they explain things clearly, and when we need something changed, they focus on getting it done rather than making the process complicated.
1,250+
Projects shipped
10+
Years of experience
Top 3%
Upwork Top Rated Plus
5 stars
Average review score
Want results like these?
Tell us what you are building. You get a reply within 24 hours on business days, then a written estimate.
Work Culture
Why Stores Hire Our WooCommerce Plugin Developers
Good plugin developers write less code, not more. These habits keep your plugin small, readable, and working after the next WooCommerce release.
Check the marketplace first
Before quoting, we search the Woo Marketplace and WordPress.org for an extension that already fits. Paying once for code you don't need helps nobody.
Hooks over hacks
We extend WooCommerce through its documented actions, filters, and APIs. Your core files and theme stay clean, so updates install without surprises.
Every change in Git
Your plugin lives in a Git repository with a changelog and tagged releases. You can see what changed and roll back a version in minutes.
Tested on two releases
We run your plugin against the current and previous WooCommerce versions before each release. Your store can update WooCommerce without waiting on us.
Plain answers on scope
If a feature belongs in settings or a cheaper extension, we'll say so before writing code. You pay for logic that's truly custom.
Your plugin, your license
You own the source code outright, with no license key tying it to us. Any WordPress developer can maintain it later.
Overview
How does WooCommerce plugin development work?
DeveloperLook handles WooCommerce plugin development for stores whose rules no existing extension covers. We map your rules, build one plugin on WooCommerce hooks with HPOS and block checkout support, and test it against the current and previous releases. Plugins start at $900, most take 2 to 8 weeks, and you own the source code.
DEVELOPERLOOK
Project facts · WooCommerce Plugin Development
- Service
- WooCommerce plugin development (custom plugins, extensions, block checkout fields)
- Typical timeline
- 2 to 3 weeks for one feature, 4 to 8 weeks for a full extension
- Platforms
- WooCommerce on WordPress, current and previous major releases
- Built with
- PHP, WooCommerce hooks and CRUD API, Store API, React blocks
- Experience
- 10+ years of development experience and 1,250+ shipped projects
- Post-launch support
- 30 to 90 days, depending on plan
- Communication
- Calls in US, UK, and AU business hours
- Starting price
- From $900 USD, fixed scope after a written spec
Reviewed 7 Oct 2026 by Saimul Islam
Good fit
Stores with rules no plugin covers
You need a pricing, fee, or shipping rule that no extension handles, and settings in three plugins still don't add up to it.
Stores running on snippets
Your checkout depends on snippets in functions.php, and you want them rebuilt as a proper plugin before the next theme change.
Teams selling a Woo extension
You're planning WooCommerce extension development for a product you'll sell, and you need code that meets the Woo Marketplace's quality bar.
Agencies hiring plugin developers
Your agency needs to hire a WooCommerce plugin developer for a client feature and wants it delivered under your brand.
Stores with an abandoned plugin
You rely on a plugin its author stopped updating, and you need a maintained replacement before it breaks on a new release.
Not a fit
A whole new store
You need a full store build or redesign, not one feature. Our WooCommerce Development Services team scopes the complete store.
Only a system sync
Your need is a sync with an ERP, CRM, or marketplace using existing connectors. Our WooCommerce Integration Services team handles those links.
An extension already fits
A well-reviewed extension already covers your rule with its settings. Buying its yearly license costs far less than custom code.
Budget under $900
Your budget for the feature is under $900. A small settings change or a marketplace extension may get you close enough for now.
Not sure we're the right fit?
Book a free call or message us. We'll tell you honestly whether we're the right team.
Pricing
Transparent Starting Prices for WooCommerce Plugin Development
These are starting points in USD. Your final price depends on your rules, the systems the plugin talks to, and whether you'll sell it, and you get a fixed proposal after a written spec.
For stores that need one checkout, pricing, shipping, or product rule, in about 2 to 3 weeks.
$900one-time, USD
- One custom rule or feature
- Admin settings page
- HPOS and block checkout support
- Tested on the 2 latest WooCommerce releases
- Source code and readme
- 30 days of post-launch support
Recommended
For stores replacing several plugins or snippets with one extension that talks to another system.
$2,800one-time, USD
- Everything in Focused Plugin
- Up to 5 related rules or features
- One API connection to an ERP, CRM, or carrier
- Custom REST or Store API endpoints
- Automated tests for the main rules
- 60 days of post-launch support
For product teams building an extension to sell, with licensing and Woo Marketplace preparation.
$6,200one-time, USD
- Everything in Custom Extension
- Custom blocks for the editor and checkout
- License keys and update delivery
- Translation-ready strings and accessibility checks
- Woo Marketplace submission preparation
- 90 days of post-launch support
For Agencies
White-Label WooCommerce Plugin Development Services for Agencies
You own the client relationship. We supply the plugin engineering: specs, custom code on WooCommerce hooks, block checkout support, and tests, delivered under your brand. Quotes are fixed, and the code lands in your client's repository.
How the partnership works
White label: your client only ever sees your brand
- Your client
- You, the agency
- DeveloperLook
Share the feature
Send what the client needs, their store URL, and the plugins they run.
- Client needs
- You share the details
- Details received
We spec and quote
You get a written spec, a fixed price, and a delivery date to share.
- Scope and plan
- Proposal to resell
- Your quoteYOUR LOGO
Build and hand off
Staging review, tested release, and source code in your client's repository.
- Done by our team
- Your brand on it
- Handed to your clientDone
Partner with DeveloperLookDelivered under your brand
Stay client-facing
Specs and release notes carry your brand, not ours.
Deep WooCommerce skills
Developers who know hooks, the Store API, and HPOS inside out.
Fixed quotes
A set price per plugin after the spec, so your margin is clear.
Extra capacity
Plugin developers for busy months, without adding to your payroll.
The Right Technology for Your Project
Technology Stack
We build with the languages and APIs WooCommerce documents for extension developers, so your plugin keeps working as the platform moves forward.
WooCommerce
WordPress
PHP
MySQL
React
JavaScript
TypeScript
Webpack
Stripe
PayPal
QuickBooks
HubSpot
- Composer
- Git
- GitHub
Docker
FAQ
Frequently Asked Questions
Straight answers on plugin costs, timelines, finding the right team, the plugin ecosystem, and code ownership.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
A custom plugin from DeveloperLook starts at $900 for one rule or feature with admin settings and block checkout support. An extension that replaces several of your plugins and connects to one outside system starts at $2,800. A marketplace-ready extension with licensing and submission preparation starts at $6,200. Your price is fixed after the written spec.
One focused feature takes 2 to 3 weeks from spec to release. A custom extension with an API connection takes 4 to 6 weeks, and a marketplace-ready extension takes 6 to 8 weeks. Your written spec and compatibility testing add about a week each, but they prevent most rework later.
WooCommerce itself is free, so your costs come from hosting, extensions, and setup. According to WooCommerce's pricing page, most stores pay $25 to $350 a month for hosting, and each paid extension runs $29 to $299 a year. A store build with DeveloperLook starts at $1,200 through our WooCommerce Development Services team.
Yes, most WooCommerce plugins come from third-party developers rather than the WooCommerce team. You'll find free ones in the WordPress.org plugin directory and paid ones on the Woo Marketplace, where vendors pass a review. Quality varies widely, so check update dates, HPOS compatibility, and support before you install one on your store.
Shopify apps run on the app maker's servers and usually bill monthly, while WooCommerce plugins run inside your own WordPress site. That gives you full access to the code and data, but also makes you responsible for updates and conflicts. WooCommerce extensions are often sold as yearly licenses instead of subscriptions.
Look for a WooCommerce agency that shows you recent plugin code, not only store designs. Ask how they handle HPOS compatibility, the block checkout, and testing against new releases. Check that they use hooks instead of editing core files, and that you'll own the code. A written spec before the quote is a good sign.
Buy an existing extension when a well-reviewed one already covers your rule through its settings. Bring in custom developers when your logic is unique to your business, when several of your plugins overlap, or when no extension supports the block checkout yet. Our free rule review tells you which side you're on.
Yes. Every plugin we build for you declares High-Performance Order Storage compatibility and reads your orders through WooCommerce's CRUD API, not straight from the database tables. Your checkout fields and rules use the Store API and the Additional Checkout Fields API, so they work in the Cart and Checkout blocks.
Yes, we build extensions to the Woo Marketplace's published requirements, including support for the two latest WooCommerce and WordPress releases and accessibility checks. We also run its Quality Insights Toolkit tests on your code. You apply for the vendor account and submit, because Woo reviews and approves every listing.
You own the plugin's source code outright, with no license key tying it to us. It's documented, so any WordPress developer can maintain it. Each plan includes 30 to 90 days of support, and our WooCommerce maintenance plans can test it against every new WooCommerce release after that.
Saimul IslamFounder & CEO, DeveloperLookStill have questions?
Send a message or book a call with the team.
Free 30-min callGoogle Meet
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Book a free 30-minute call
In 30 minutes on Google Meet we walk you through how we would build it, how long it takes and what it costs. Then you get a written estimate.
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