Cooperative Blanket Mortgage
What It Is
A cooperative blanket mortgage is a single loan covering an entire multi-unit development, held by the cooperative corporation rather than by individual residents. Instead of 100 people each having their own mortgage, there is one mortgage on the whole property.
Residents don’t take out loans — they buy membership shares (typically 10,000) and pay monthly carrying charges that cover:
- Their share of the blanket mortgage payment
- Operations and maintenance
- Reserve fund contributions
Why It Matters for the CLT Model
This structure solves several problems at once:
Capital efficiency — The CLT doesn’t need to act as a bank or fund individual mortgages. One CDFI or mission-aligned lender underwrites the whole development.
Accessibility — A 10,000 share buy-in is achievable for low-to-moderate income households. A $150,000 individual mortgage is not.
Collective leverage — The cooperative can refinance the blanket mortgage as a unit when rates improve, benefiting all residents simultaneously. An individual homeowner has to navigate refinancing alone.
Simplified underwriting — Lenders evaluate the cooperative as an entity (rental income, operating history, reserves) rather than 100 individual credit profiles.
How Carrying Charges Work
Carrying charges function like rent but are fundamentally different:
- They’re set by the cooperative’s actual costs, not the market
- They don’t generate profit for a landlord
- They adjust only when actual costs change (refinancing, major repairs, reserve targets)
- They’re frozen relative to the speculative market — this is the cost floor mechanism
This is what makes carrying charges the financial engine of the UBI-adjacent model: costs track the building’s needs, not Durham’s rental market.
Equity Credits
As the blanket mortgage is paid down, residents accumulate equity credits proportional to their carrying charges paid. When they leave:
- They sell their share back to the cooperative
- They receive their equity credits (principal paydown share) plus a modest capped appreciation
- The cooperative resells the share at the same capped price to the next resident
The cooperative maintains affordability without the CLT needing to intervene in every transaction.
Lender Types
Conventional banks largely don’t understand cooperative mortgages outside of New York. Realistic lenders include:
- CDFIs (Community Development Financial Institutions) — mission-aligned, experienced with non-standard structures
- State housing finance agencies — NCHFA in North Carolina
- Impact investors — patient capital accepting below-market returns
- USDA Rural Development — potentially applicable depending on parcel classification