What Is a Commercial Portfolio Mortgage?
A commercial portfolio mortgage provides finance against multiple commercial investment properties under a single facility or as part of a coordinated commercial lending relationship. It is the commercial equivalent of a residential portfolio landlord mortgage, designed for investors who hold shops, offices, industrial units, warehouses, or mixed-use properties across multiple sites and want to manage their finance through a commercial lender who understands the full portfolio picture.
Types of Commercial Property in a Portfolio
Commercial portfolio mortgages can encompass any income-producing commercial real estate. The portfolio's composition affects both the lender panel and the LTV available against each asset type.
- Retail units and shop premises
- Offices (individual offices, business centres, serviced office buildings)
- Industrial and warehouse units
- Mixed-use buildings with residential upper floors and commercial ground floors
- Healthcare premises (dental surgeries, GP practices, private clinics)
- Trade counter units
Income Assessment for Commercial Portfolios
Unlike residential BTL where the ICR is the standard measure, commercial mortgage income is assessed on the net rental income generated by the portfolio, rent received minus void allowances, management costs, and structural maintenance reserves. Lenders typically apply a yield-based assessment: the net annual income must cover the debt service (interest plus, where applicable, capital repayment) at a coverage ratio of typically 1.25x to 1.5x depending on the lender and the quality of the tenants.
Tenant covenant quality is a key variable in commercial portfolio assessment. A portfolio let to blue-chip corporate tenants on long FRI (full repairing and insuring) leases is assessed very differently from a portfolio of short-term lets to small businesses. Long unexpired lease terms, institutional tenants, and triple-net leases produce the most favourable underwriting outcomes.
LTV for Commercial Portfolio Mortgages
Maximum LTV on commercial portfolio mortgages varies by property type and portfolio quality. The portfolio blended LTV is often more favourable than the LTV applicable to individual properties, as the cross-collateralisation across multiple assets reduces the lender's effective risk.
| Property Type | Typical Maximum LTV |
|---|---|
| Prime retail and offices in major cities | Up to 70% LTV |
| Secondary commercial property | 60-65% LTV |
| Industrial and warehouse | Up to 65% LTV |
| Mixed-use commercial and residential | 65-70% LTV |
Commercial Portfolio vs Individual Commercial Mortgages
Where an investor holds multiple individual commercial mortgages, each with a different lender, different expiry date, and different conditions, consolidating into a single commercial portfolio facility provides clear advantages.
- Simplified administration
- A single annual relationship review rather than multiple
- Potentially improved blended pricing through the volume relationship
- Flexibility to add new acquisitions within the facility rather than arranging standalone finance for each