How Off-Campus MOB Financing Works in San Diego
San Diego's off-campus medical office market operates with a set of structural advantages that most other major metros cannot replicate. A large active-duty military and veteran population creates durable outpatient care demand that is relatively insulated from economic cycles. Population growth in North County and South Bay continues to generate absorption for specialty physician services well outside the footprint of any single hospital campus. The result is a suburban medical office corridor that runs from Carlsbad and Rancho Bernardo in the north through Kearny Mesa and Mission Valley into Chula Vista and the South Bay, with occupancy across these corridors consistently above 92 percent even as the broader office sector has faced meaningful headwinds nationally.
Off-campus MOB financing in this market typically applies to buildings that are operationally independent from a hospital campus but are often affiliated with or anchored by tenants from the UC San Diego Health, Scripps Health, Sharp HealthCare, or Kaiser Permanente networks. These affiliations matter enormously to lenders. A 20,000 square foot multi-tenant building in Kearny Mesa anchored by an orthopedic group with Scripps affiliation underwrites materially differently than a general-purpose suburban office converted to clinical use with no health system connection. Lenders treating these two deals the same are not applying the right framework, and sponsors who understand that distinction can position their assets more competitively in the capital markets.
The tenant profile for off-campus MOB in San Diego typically spans orthopedic, cardiology, and oncology specialty groups, multi-specialty clinics, urgent care operators, dental groups, physical therapy, and lab and diagnostic services. These tenants sign five to ten year NNN or modified gross leases, shorter duration than on-campus equivalents, and often with personal guaranties from physician owners rather than institutional credit. That lease structure creates legitimate rollover risk that lenders must underwrite carefully, and it drives most of the variation in rate and leverage available to any given deal.
Lender Appetite and Capital Stack for San Diego Off-Campus MOB
Community and regional banks remain the most active and competitive lenders for stabilized off-campus MOB in San Diego. Pacific Premier Bank and Banner Bank have been consistently constructive on well-leased suburban medical office here, particularly where the tenant roster includes health system-affiliated physicians or multi-specialty clinics with demonstrated revenue stability. These institutions typically underwrite to 65 to 75 percent LTV on stabilized assets, price in a range of 200 to 325 basis points over the 10-year treasury or floating over SOFR, and structure 25 to 30 year amortization with three to five year fixed terms. With the 10-year treasury near 4.3 percent and SOFR near 3.6 percent in the current environment, all-in rates for well-qualified borrowers generally land in the mid-to-high six percent range on fixed spreads or the high sixes to low sevens on floating structures. Prepayment typically involves step-down or yield maintenance provisions depending on the institution and product type.
CMBS becomes relevant at the ten million dollar threshold and above, provided the asset carries strong occupancy and at least one credit-tenant anchor. CMBS execution in this market is most appropriate for buildings where a portion of the rent roll includes health system-affiliated tenants with corporate guaranties or investment-grade credit profiles. Spreads run 225 to 325 over for this product type, with ten-year fixed terms and defeasance or yield maintenance. Life insurance companies are selectively active here, but tend to concentrate on larger off-campus assets, ideally with a named health system anchor or long-term NNN lease from a creditworthy single tenant. Life company execution is realistic for deals in the 20 to 60 million range with the right credit story.
SBA 504 remains the dominant structure for owner-occupant physician groups acquiring smaller suburban buildings, and it remains one of the most competitively priced options available in this market for qualifying borrowers. Leverage up to 90 percent with long-term fixed-rate SBA debenture pricing makes it the right tool for a physician group buying a building they intend to occupy as their primary practice location. Debt funds have stepped in aggressively for bridge and value-add plays, particularly in Kearny Mesa and Rancho Bernardo where lease-up risk is manageable and the exit to permanent financing is well-supported by regional bank appetite.
Underwriting Criteria That Matter in San Diego
Lenders underwriting off-campus MOB in San Diego focus first on weighted average lease term remaining. With typical lease durations of five to ten years and personal guaranties from physician owners rather than institutional-credit backstops, a building with near-term rollover exposure is a fundamentally different credit than a building with a seasoned rent roll and five-plus years of average lease term. Any asset with more than 25 to 30 percent of GLA rolling within three years will face more conservative leverage and scrutiny regardless of current occupancy.
Tenant credit quality is the second variable that drives the most underwriting variance. Health system affiliation, physician group size, practice longevity, and whether guaranties are personal or corporate all factor into how lenders assign value to individual tenants within the rent roll. A building with three large specialty groups that each have 15-year operating histories underwrites better than a building with ten smaller practices at similar rent per square foot.
Building specifications matter as well. Medical-grade HVAC, higher electrical capacity, clinical plumbing, ADA compliance, and imaging-capable rooms all support value and reduce re-tenanting risk in lenders' models. Buildings without adequate mechanical infrastructure carry functional obsolescence risk that appraisers and lenders will discount. Replacement cost analysis and the cost to retrofit for future medical tenants are legitimate underwriting inputs in this market.
Typical Deal Profile and Timeline
A representative off-campus MOB transaction in San Diego typically falls in the five to forty million dollar range. On the smaller end, this might be a three to five tenant building in Chula Vista or Carlsbad acquired by a physician group partnership using SBA 504. On the larger end, a twelve to twenty thousand square foot multi-tenant suburban asset in Rancho Bernardo or Mission Valley anchored by an orthopedic or cardiology group going to permanent bank or CMBS financing. Sponsors lenders prefer have direct healthcare real estate operating experience or a track record in medical office specifically. Pure general office operators repositioning into medical use face heavier scrutiny on asset management assumptions.
Timeline from signed LOI through closing on a bank or CMBS permanent loan typically runs 60 to 90 days for a clean stabilized asset. Bridge executions through debt funds can close in 45 to 60 days where the business plan is straightforward. SBA 504 timelines run 90 to 120 days from application through funding given the two-lender structure. Key elongation risks are appraisal turnaround in a market where comp selection is nuanced, environmental review on older suburban properties, and lender credit committee scheduling for larger transactions requiring senior approval.
Common Execution Pitfalls Specific to San Diego
The first pitfall is overestimating how a health system affiliation translates into credit support. Lender affiliation with a Scripps or UC San Diego Health physician does not constitute a corporate guaranty. Lenders will distinguish sharply between a building where a health system is the tenant of record versus one where individual physicians who happen to practice within a health system network are the tenants. Sponsors who present these deals as equivalent will lose credibility quickly.
The second pitfall is underestimating entitlement and permitting friction for buildings undergoing conversion or significant clinical build-out. San Diego's permitting environment for medical use changes and tenant improvements is not fast. Sponsors budgeting 60 to 90 day permit timelines for clinical sinks, imaging rooms, or HVAC upgrades are routinely surprised. This compresses lease-up timelines and can push bridge loan maturity risk into a difficult position.
The third pitfall involves cap rate expectation misalignment. San Diego medical office pricing has held up relative to general office, but sponsors who underwrite exits at sub-six cap rates on buildings with short remaining lease terms and personal guaranties only are working with optimistic assumptions that lenders and equity partners will not support on refinance or disposition.
The fourth pitfall is approaching CMBS execution on assets that have the right loan size but lack the credit-tenant anchor CMBS requires. Sponsors who need defeasance-friendly prepayment flexibility for estate or partnership reasons sometimes push toward CMBS on deals that would be better served by community bank execution. Understanding which lender type fits the asset is more important than optimizing for any single loan term in isolation.
If you have an off-campus MOB acquisition, refinance, or value-add recapitalization under way in San Diego or anywhere in the national market, CLS CRE has the lender relationships and medical office capital markets experience to structure the right execution. Contact Trevor Damyan directly to discuss your deal and review the full program guide for off-campus medical office financing.