The work
What this actually involves
A Marketplace app is not a snapshot with a logo on it. It is a real piece of software: an OAuth handshake, a token store, install and uninstall lifecycle, webhook subscriptions, a database, and an interface someone actually uses during their working day.
The OAuth, webhook and install plumbing is already built and proven across the Marketplace apps and private builds I ship, which is why the second app costs a fraction of the first.
Included
What you get
Scoped tokens per sub-account, refreshed automatically, so a write can only ever reach the location it belongs to.
Per-location OAuth
Scoped tokens per sub-account, refreshed automatically, so a write can only ever reach the location it belongs to.
Install and uninstall
Both directions handled properly, including what happens to data when an account removes the app.
Webhooks and sync
Subscribed, verified, de-duplicated, and replayed when the far end goes quiet.
Your own interface
The screens the job actually needs, not a settings page bolted onto HighLevel's.
Hire me when
Signals this is the right piece of work
An existing app is stuck in review, or fails on install for some accounts and not others
You want the same platform layer reused across a second, third and fourth app
You need the app white-labelled so an agency can resell it under its own brand
Tokens expire, webhooks fire twice, or the app silently stops syncing
The problem
The first custom app is expensive. The rest should not be.
Most of the cost of a first HighLevel Marketplace app is not the feature anybody asked for. It is the platform layer underneath: the install and uninstall flow, per-location OAuth, token refresh, webhook handling, data sync, the backend, the database, the deployment pipeline and the security model.
That work is invisible to the end user and identical for almost every app. Which means the second, third and fourth apps are dramatically cheaper than the first, provided the first was built on a foundation designed to be reused rather than as a one-off.
That foundation already exists here. It carries Marketplace apps and private builds already shipped for clients.
What gets built
A complete app, not a prototype
Listing, scopes, install and uninstall handling, and the approval process navigated on your behalf.
Marketplace install flow
Listing, scopes, install and uninstall handling, and the approval process navigated on your behalf.
Per-location OAuth
Token storage and refresh that survives sub-accounts being added, removed and reconnected.
Backend and database
Your own infrastructure, your own data, provisioned and secured rather than sitting inside somebody else's tenancy.
Its own interface
A real front end, white-labelled, so your client sees your brand and never sees mine.
Worked example
Two apps, one platform layer
If you run a repeatable HighLevel build across many sub-accounts, you have two problems, and almost everyone only attacks the first. Getting a location live is slow. Getting the location to actually use it is harder.
The provisioning console takes a new sub-account from blank to a reviewable draft in minutes instead of days. A location is submitted with a domain and a name. The console then fans out across several narrow sources rather than trusting one profile API: brand and structured service extraction from the website, verified operational facts from Google Places, the language people actually search with, unstructured research, and the registered legal entity from Companies House.
Those sources disagree with each other, and reconciling them is the actual engineering. Around a hundred custom values are proposed per location, each carrying its source and a confidence score, marked agreed or contested, so the operator reviews provenance rather than re-deriving every field. A typed confirmation pushes it live. One go-live pushed 49 updates into a live sub-account in a single operation, every one logged and reversible.
FrontDesk Assist deals with the second problem. You can deploy a perfect build and still watch a third of the leads die at the client's front desk, because HighLevel's native interface was never designed for a receptionist with a phone in one hand and a queue of callbacks in front of them. The app gives them three live queues ordered by what needs doing now, a speed-to-lead clock visible to everyone on shift, and a team leaderboard so accountability is a number rather than a conversation. Overdue follow-ups turn red.
Both sit on the same foundation. That is the part worth reusing.
Boundaries
What this deliberately does not include
HighLevel reviews submissions and sets its own criteria. I build to them and have taken apps through the process, which is a good position to start from, but nobody can promise an outcome they do not control.
A guarantee of Marketplace approval
HighLevel reviews submissions and sets its own criteria. I build to them and have taken apps through the process, which is a good position to start from, but nobody can promise an outcome they do not control.
Your go-to-market
I build the app. Selling it is yours, though I will tell you honestly if I think the commercial model will not work before you spend money finding out.
Fire and forget
An app needs maintaining. Platform changes, scope changes and support requests continue after launch, so most app builds are a project followed by a retainer.
Common questions
Questions people ask before booking
How long does a HighLevel Marketplace app take to build?
It depends almost entirely on whether the platform layer exists already. A first app carrying install flow, OAuth, backend and database takes considerably longer than the second one on the same foundation. Scope is agreed in writing before anything starts.
Can the app be white-labelled for my agency to resell?
Yes, and most are. Your client sees your brand throughout and never sees my name. Apps can be billed monthly alongside the subscription rather than sold as a one-off build.
Do I own the app and the code?
Yes. It runs on infrastructure in your name, the data is yours, and it is documented so another developer can maintain it.
What is involved in getting listed on the HighLevel Marketplace?
A listing, defined OAuth scopes, install and uninstall handling, and review by HighLevel. I handle the technical requirements and the submission.
Can you fix or finish an app someone else started?
Frequently. That usually begins with an audit, because taking on a partly built app without reading it first is how you inherit somebody else's problem at your own expense.
What does an app cost to run once it is live?
Hosting, database and any third-party services it depends on, all in your name and on your card. Those are typically modest, and I will give you a realistic figure before you commit.
Start here
Start with the audit
A written architecture record and a staged plan, useful whether or not I build the rest.
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