Off-the-shelf plugins don’t always fit. When your website needs to do something specific, you need a plugin built around your exact requirements.
We design and build custom Elementor plugins and WordPress features that work the way your business needs them to, properly tested before they go live.
Most WordPress plugins do one thing and do it adequately. But when your business needs something specific, a multi-step calculator that captures leads, a booking widget that talks to your CRM, a custom dashboard that pulls live data, the off-the-shelf option either doesn’t exist or forces you to change how you work to fit the tool.
We build Elementor plugins that do exactly what you need. Not templates. Not workarounds. Fully custom widgets that sit inside the Elementor editor you already know, with every colour, font, and design element configurable from the familiar Elementor panel.
What sets this apart:
This is not a website chatbot. This is operational software, embedded in your website, running on your infrastructure, doing real work while you sleep.
Every plugin build follows the same proven workflow, the one that delivered a production U-value calculator verified to 99.5% accuracy against industry reference data.
Step 1: Specification and scope. We document exactly what the plugin needs to do, what data it captures, what the admin interface looks like, and what the calculations or logic need to produce. This becomes the blueprint, nothing gets built until you sign off.
Step 2: Formula and logic verification. If your plugin involves calculations (U-values, pricing, configurators), we build and verify the computation engine first. Independent reference data, real-world benchmarks, edge case testing. The maths has to be right before the design matters.
Step 3: Development and design controls. We build the Elementor widget with every visual element exposed in the design panel. You get a working plugin to test on your staging site, interact with it, style it, break it. We iterate until it feels right.
Step 4: Deployment and handover. The plugin is installed on your live site as a standard WordPress plugin. You get the admin interface, the documentation, and the confidence that every submission is stored in your database on your infrastructure.
Yes. The plugin is developed as a standard WordPress plugin that installs like any other. It works alongside your existing theme, existing plugins, and existing content. The Elementor widget drops into any page or template. We test on a staging copy of your site before anything touches production.
Because every visual element is already exposed in the Elementor design panel, most styling changes, colours, fonts, spacing, can be made by your own team without touching code. For functional changes, the plugin follows standard WordPress architecture so any WordPress developer can extend it. We also offer ongoing support and enhancement packages.
Simple calculators and wizards typically take one to two weeks from specification to staging deployment. More complex builds with external API integrations, multi-step approval workflows, or sophisticated calculation engines take longer. We’ll give you a timeline at the specification stage so you know exactly what to expect.
No. The plugin is built on standard WordPress architecture, standard database tables, standard admin screens, standard plugin update mechanisms. Any competent WordPress developer can maintain and extend it. We provide full documentation as part of every build so your team or your next developer has everything they need.
We help businesses make smarter decisions online, with clear advice and practical digital solutions that support long-term growth.
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Paul and his team are very professional, they have given good advice, and built a great site that generates ongoing business
I'm so pleased with my new website, set up relatively recently by Sum Factors. It has attracted a number of new clients very quickly and my website looks very professional and attractive. Paul and Karen are so helpful, friendly and professional and I would highly recommend them
We have worked with SumFactors for many years and would highly recommend their knowledge, expertise and personal/efficient service, but above all their proven ability to go the extra mile time after time! A fabulous team who are passionate, dedicated and an absolute pleasure to work with. Kim Barnes - Evans FREC MD THE Agency (Recruitment) Ltd West Yorkshire
I would recommend SumFactors to anyone who is looking for more than just a website designer. Paul met with me and straight away understood my business and where I wanted to take it. His knowledge and experience has been invaluable, creating the website and digital strategy which has been part of RBHM's success. Paul is friendly and really easy to work with, always happy to help.
SumFactors are a pleasure to work with and genuine experts in their field. They are helpful, affordable and insightful and I would wholeheartedly recommend them to anyone who is interested in their services - you will not regret it.
We were introduced to Sum Factors over a year ago when we opened our business and needed a website and they were - and still are fantastic! The website is very professional but - most importantly - the ongoing support is priceless! nothing is too much, things get done very quickly and Paul and Karen are the nicest team you can work with!
Cannot fault anything that the guys at SumFactors carry out. From initial concept, right the way through to publishing and aftercare, they really do take care of everything - making running a small business much easier. Paul & Karen have changed the way I view my website and how it should perform, giving me a personalised service that is simply not available elsewhere at this price point! Thank you for all of your help, Sam S.Thomas Kitchens
I am so impressed with the service I have received working with the Sumfactors team. Nothing is ever too much trouble, they are incredibly creative and knowledgeable. They are experts in their field but go out of their way to understand our business and our goals and work with us to achieve these. Their prices are extremely competitive. I would recommend Sumfactors to any company or sole trader any time. From the team at Inspire Me Travel
Sumfactor (aka wonderful Paul) always has my best interest at heart, it's so rare to come across an agency who not only knows what they're doing but you can 100% trust. Paul will openly Challenge on my decisions even if it means him making less money at times as long as it's in my best interest he'll say what he has to say and I'm so great full for that. Couldn't recommend them more
It been great working with Sumfactors. I know very little about the tech side of things especially when it comes to Google ads and Website updates. But both Karen and Paul have been amazing. Taking me through everything step by step. The best thing about them is you feel they genuinely care about growing your business. It's as if it is their business too and that makes them an absolute pleasure to work with.
A great experience working with Paul and the team. Very supportive and informative. Great value for money and their ability to help us grow the business is a real asset. Will certainly be using again!
Sum Factors not only delivered us a great website, they also provided advice and support to bring in traffic and orders. At every point, they have been highly professional and responsive, and nothing is too much trouble. Really enjoyed working with Paul and his team and would highly recommend Sum Factors.
What would we (and our website) do without them - timely accurate absolute pleasure to work with - it feels like we have personal coaches for our business at hand whenever we need technical, design or even psychological support in how to tackle a business problem. They are a blessing to our business - couldn't be in safer hands on all accounts!
I have recently started working with SumFactors on Fletcher Of London and they have been great. Really lovely people to work with, they are quick to respond, and always there to offer support and advice. They have shown me how to manage my own products and shop so now I feel confident to do more things for myself. I would highly recommend SumFactors.
