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Source Code Escrow and IP Assignment in a Custom App Contract: New York Guide

Mohamed Bah·Fondateur, Kolonell
October 8, 2026
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Source Code Escrow and IP Assignment in a Custom App Contract: New York Guide

Source Code Escrow and IP Assignment in a Custom App Contract: New York Guide

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The verdict in three sentences

Without a written IP assignment, your vendor can keep ownership of the code you paid for, whatever the invoice says. The three protections that really matter are Git access from day one, a priced transition clause and an open source license inventory delivered at acceptance. Third-party escrow costs 350 to 1,700 USD a year and replaces none of those three clauses, it complements them.

Why owning the code is not automatic in the US

Under the US Copyright Act, software written by an independent contractor belongs to the contractor unless the contract says otherwise. The work for hire doctrine only covers employees and a short list of commissioned works, and custom software usually falls outside that list. That is why New York lawyers pair a work for hire clause with a fallback assignment: if the work does not qualify, all rights are assigned to the client anyway.

A vague line such as « client owns the deliverables » is a weak shield. A company investing 90,000 USD should negotiate a dedicated IP section before signing, not at acceptance.

ClauseWhat it guaranteesWeak version to refuseStrong version to demand
IP assignmentYou can modify, resell, hand to a third partyNon-exclusive license to useWork for hire plus fallback assignment, worldwide, effective on payment of each milestone
Git repository accessYou see the code continuouslyZIP archive at project endRepo in your GitHub or GitLab organization, admin rights on the client side
DocumentationAnother vendor can take over« Documentation provided » with no detailREADME, architecture diagram, deployment runbook, environment variables
Pre-existing componentsVendor keeps generic building blocksNothing listedNamed list of vendor modules with a perpetual, royalty-free license
Open source licensesNo GPL contamination riskNo inventorySBOM or dependency and license table at each release
TransitionOrderly exit if the relationship ends« Reasonable assistance »5 to 10 days of handover at a rate fixed in the contract, within 30 days

The real cost of protection in 2026

Most clauses cost nothing to negotiate, but a few have a price. Knowing it lets you decide calmly instead of dropping them for fear of an unclear extra charge.

ProtectionIndicative 2026 costWhen it is justified
Git repo in the client's organization0 to 300 USD a year (GitHub Team or GitLab Premium seats)Always
Third-party escrow (NCC Group, EscrowTech or similar)350 to 1,700 USD a year depending on deposit frequencySmall vendor, business-critical app
Knowledge transfer at project end5 to 10 days at 900 to 1,400 USD, so 4,500 to 14,000 USDPlanned vendor change or insourcing
Full technical documentation3 to 6% of budget, so 2,700 to 5,400 USD on 90,000 USDAlways, include it in the fixed price
Open source license audit1,000 to 3,000 USD per auditResale of the software or fundraising
Priced transition addendum0 USD to negotiate, paid only on exitAlways

For a 90,000 USD application, the full package (repo, documentation, three years of escrow, guaranteed transition) comes to roughly 8,000 to 12,000 USD, or 9 to 13% of the budget. Compare that with a full rewrite after a lock-in: often 60 to 80% of the original budget.

How to write a transition clause that actually works

A useful transition clause answers four questions. Who triggers the exit, and with what notice? Which deliverables are handed over: code, database exported in a standard format, deployment scripts, access to cloud accounts? How many days of assistance, at what rate, within what timeframe? What happens if the vendor disappears: this is where escrow takes over, with release conditions covering bankruptcy or cessation of business.

Also require hosting, domain and third-party service accounts (email delivery, payments, maps) to be opened in your company's name. Code recovered without access to the services that run it is useless the day after the breakup.

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Daniel, CFO of a mid-sized logistics company in New York, signs a 90,000 USD shipment tracking app. He negotiates Git access from the first sprint, assignment on each milestone payment, escrow at 1,000 USD a year and 8 days of transition at 1,100 USD. Total protection cost over three years: 3,000 USD of escrow, 8,800 USD of transition (paid only on exit) and 3,600 USD of documentation included in the fixed price.

Two years later, the vendor is acquired and raises its rates by 40%. Daniel triggers the transition, moves maintenance to a new team and avoids a rewrite estimated at 62,000 USD. Net saving: about 50,000 USD and four months.

FAQ

Does paying the invoice make me the owner of the code?

No. A contractor's code stays the contractor's unless a signed writing assigns it. Without that clause, you may only hold an implied license, even after paying 100% of the price.

Is escrow really necessary?

It is useful if your vendor has fewer than 10 people or the app is business-critical. At 350 to 1,700 USD a year it protects against bankruptcy, but continuous Git access remains the first line of defense.

Can the vendor refuse to assign its generic components?

Yes, and that is legitimate. Ask for a perpetual, royalty-free, transferable license on those components and a named list in a contract exhibit.

How many handover days should I plan?

Between 5 and 10 days for an app of 60,000 to 130,000 USD. Fix the rate in the contract, for example 1,100 USD a day, to avoid renegotiating at exit.

What should I check on open source licenses?

Ask for a dependency inventory at each release. A GPL library integrated carelessly can force you to publish your own code if you distribute the software.

Let's scope your project. We price your custom application with IP assignment, Git access and a transition clause built into the contract, on a scope and indicative budget agreed together. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.

Tags:#source code escrow#IP assignment#work for hire#software contract#custom application#New York
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Mohamed Bah

Fondateur, Kolonell

Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.