Vassumable: Property Purchase App
Real Estate
Workflow Automation



CLIENT
Vassumable
CATEGORY
Real Estate
TIMEFRAME
8 Weeks
SERVICE
Product Strategy
Development
About Project
- Assumption closings in 45 days, against the 90 to 120 typical for the process.
- Buyers save $840 a month at median, on rate differentials between an assumed loan and current market.
- 1,400 transactions completed through the platform.
- Servicer response time from 34 days to 9, through structured submission.
- Assumable inventory made searchable, where it was previously invisible.
- Built in 8 weeks.

Challenge & Solution
Challenge
Buyers and sellers struggled to navigate assumable mortgage transactions due to complex paperwork and limited structured transaction support.
Solution
We developed a guided transaction platform that organizes assumable mortgage workflows, simplifies compliance coordination, and improves transparency throughout the home buying process.
Millions of US mortgages are assumable and almost nobody uses them, because the process is obscure enough that most agents on both sides of a transaction have never done one.
Two problems compound. First, you cannot find them. There is no field in the listing systems marking a property as carrying an assumable loan, so a buyer who specifically wants one has no way to search. Second, the process itself runs through loan servicers whose assumption departments are understaffed and whose paperwork requirements are undocumented. Incomplete submissions get returned weeks later with no explanation of what was wrong.
The client had closed a handful personally and described each as a fight. With rates where they were, an assumable loan at a rate several points below market is worth a great deal of money to a buyer, and the mechanism to access it was effectively broken.
Cutting the servicer cycle from 34 days to 9 is what makes the timeline viable, and it came from submitting complete packages first time rather than from any servicer changing how they work.
Making the inventory searchable created demand that had no way to express itself before. Buyers who want an assumable loan can now find one, which was the precondition for everything else.
An assumable inventory database built by identifying loan types from public records and verifying with sellers, which is the piece that did not exist anywhere before.
A qualification calculator showing a buyer the monthly saving against a market-rate loan, the assumption fee, and the cash required to cover the equity gap, which is the part most buyers do not anticipate.
Servicer-specific document packages, because requirements vary by servicer and are largely undocumented. The platform holds what each one actually wants and validates a submission for completeness before it goes.
Beyond that: status tracking through servicer review, a second-lien flow for financing the equity gap, guided timelines for both parties, and an agent education layer since most transactions involve someone doing this for the first time.
Typography & Color

