Financing Multi-Family Homes Investments
San Francisco's multi-family housing stock is the engine of the city's wealth-building real estate economy. Buildings with two to twenty units — duplexes on Noe Valley slopes, Edwardian six-flats on Inner Sunset streets, Victorian multi-units in the Mission, mid-century apartment buildings in the Richmond — constitute the core of what SF investors buy, renovate, and hold for generational wealth. The supply is largely fixed: the city adds fewer than 5,000 new housing units per year against a population base of 880,000, and the vast majority of what trades in the multi-family market is pre-war stock that cannot be replicated at current land and construction costs.
Financing this asset class requires lenders who understand the SF Rent Ordinance in operational detail — not just as a disclosed regulatory condition, but as the underwriting framework that determines how a building's income will behave over time. Hard Money Lender San Francisco underwrites rent-controlled multi-family using current in-place rents for current NOI, Costa-Hawkins vacancy decontrol modeling for projected income trajectory, and conservative LTV ratios that reflect the discount to market-rate value from below-market rents. We close in seven to fourteen business days, lend to LLC and family trust structures without requiring ownership restructuring, and do not require income documentation from self-employed investors who are the dominant buyer profile in SF's multi-family market.
Our multi-family borrowers range from first-time duplex buyers in Bernal Heights using an FHA-adjacent strategy — buying in, living in one unit while renting the other, then transitioning to pure investor status — to experienced operators managing thirty-unit portfolios across the city's rent-controlled fabric. We serve both with appropriate loan structures and the same commitment to execution.
Duplex and triplex acquisition financing serves the entry-level multi-family investor market. A Noe Valley duplex — one owner-occupant unit and one rented unit — sells in the $1.8M–$2.5M range; a Mission District triplex with three rent-controlled units at below-market rents may trade at $1.4M–$1.9M. We close acquisition financing in seven to ten business days at up to 70% of current appraised value, with rent roll analysis forming the core of our underwriting.
Soft-story multi-family acquisition and retrofit financing enables investors to acquire pre-retrofit buildings at pricing that reflects the compliance obligation, then complete the mandatory engineering and construction work as a draw component within the acquisition loan. The Soft Story Mandatory Retrofit Ordinance applies to multi-unit wood-frame buildings with soft-story ground floors; buildings in Tier 1 of the enforcement schedule face the most immediate compliance deadlines. Investors who execute this strategy convert the retrofit discount into immediate equity upon compliance certificate issuance — often $100,000–$300,000 in instant value creation on a six-to-eight-unit building.
Value-add renovation financing supports multi-family owners who want to improve units as they turn over at natural vacancy. A phased renovation approach — investing $40,000–$80,000 per unit in kitchens, bathrooms, in-unit laundry, and energy efficiency improvements on units as they become vacant — is the operationally appropriate strategy for rent-controlled multi-family where not all units can be renovated simultaneously. We structure unit-by-unit draw release schedules that allow renovation capital to flow as units turn over, maintaining income from occupied units throughout the improvement period.
ADU addition to existing multi-family under California's SB-9, AB-2221, and AB-2097 frameworks creates new housing units on existing multi-family lots. A six-unit Richmond District building on a lot with a detached rear garage can add a permitted 800-square-foot ADU in the garage footprint, adding an additional rent-able unit and $400,000–$600,000 in appraised value through a ministerial permit process. We fund ADU additions as draw components within multi-family renovation loans.
Common Challenges We Solve
Costa-Hawkins preemption nuances affect multi-family investors in ways that require detailed legal understanding. The Costa-Hawkins Rental Housing Act exempts certain property types from local rent control — single-family homes, condominiums, and residential units in buildings first certified for occupancy after February 1, 1995, are generally exempt. For multi-family buildings, the most important Costa-Hawkins provision is vacancy decontrol: when a tenant in a rent-controlled unit voluntarily vacates, the new tenancy is established at market rate. This provision is the mechanism by which rent-controlled buildings gradually converge toward market rents through natural turnover, and it is central to how investors model long-term return on SF rent-controlled multi-family.
Just Cause Eviction requirements mean that owners of SF rent-controlled multi-family cannot remove tenants without a legally recognized cause. The SF Rent Ordinance enumerates permitted just causes: non-payment of rent, breach of lease, nuisance, criminal activity on the premises, failure to execute a new lease on substantially similar terms, owner-move-in (OMI), relative-move-in (RMI), and Ellis Act withdrawal. Each pathway has procedural requirements, notice periods, and in some cases relocation payment obligations. Investors who acquire multi-family with tenant transitions contemplated must have independent housing attorney guidance on the applicable pathway and its requirements.
Seismic vulnerability in pre-war San Francisco multi-family creates both compliance obligations and acquisition opportunity. Buildings subject to the Soft Story Mandatory Retrofit Ordinance that have not completed their required engineering work trade at discounts. Buildings that have completed the retrofit — and have the DBI compliance certificate to prove it — trade at a premium. The spread between these two valuations, minus the retrofit cost, is the value creation opportunity that our retrofit acquisition program finances. CEA earthquake insurance is mandatory on all multi-family collateral; premiums are typically lower post-retrofit.
Our Approach
Multi-family loans from $250,000 to $10 million for individual buildings, and up to $15 million for portfolio blanket structures. Terms from six months to twenty-five years depending on loan purpose and exit strategy. LTV from 60–75% depending on rent control exposure, building condition, and borrower track record. No income documentation. LLC and family trust structures standard.
Term sheets within twenty-four to forty-eight hours of receiving the rent roll and property address. Closing in seven to fourteen business days for acquisitions, ten to fourteen for refinancing. All loans held on our balance sheet with no secondary-market underwriting constraints.
Frequently Asked Questions
Do you finance rent-controlled multi-family buildings in San Francisco?
Yes — rent-controlled multifamily is our most common multi-family loan category. We underwrite using current in-place rents for current NOI, then model the Costa-Hawkins vacancy decontrol trajectory for projecting income improvement through natural turnover. For buildings with significant below-market rent exposure, we apply conservative LTV ratios (60–65%) and require adequate borrower liquid reserves. We do not require or assume tenant displacement actions to justify the financing. Investors who plan to hold through the rent-control appreciation cycle are building among the strongest long-term wealth positions available in California real estate.
Will you fund a soft-story multifamily acquisition before the seismic retrofit is complete?
Yes. Pre-retrofit soft-story multi-family is a specialty that most hard money lenders will not touch; we have made it a core program. We underwrite the acquisition at a price reflecting the retrofit discount, embed the engineering and construction cost in the loan's draw schedule, and release the final draw upon DBI compliance certificate issuance. The retrofit compliance certificate not only satisfies the city's Soft Story Ordinance requirements — it also reduces the building's CEA earthquake insurance premium and, in some cases, opens access to conventional permanent financing that was previously unavailable. The investor captures the discount as instant equity upon compliance completion.
What DSCR do you require for San Francisco multifamily loans?
For stabilized multi-family with in-place rents close to market, we target 1.15–1.25x DSCR on current income. For rent-controlled buildings with significant below-market rent exposure, we may approve loans where current DSCR is as low as 0.90–1.10x if the borrower has strong liquid reserves, the LTV is set conservatively against current income-capitalized value, and the long-term hold thesis — including natural turnover and Costa-Hawkins decontrol — produces a credible income improvement trajectory. We present the full DSCR analysis to borrowers at term-sheet stage so there is no ambiguity about the cash flow picture.
Can I convert a single-family home to a multi-family property in San Francisco?
San Francisco's zoning is complex for residential conversions. In most RH-1 (Residential House) zones, existing single-family homes cannot be converted to multi-unit use through interior subdivision without a conditional use permit. However, adding an ADU or JADU to a single-family home is now a ministerial right under state law — these units do not require Planning Commission approval and are processed through DBI's permit pathway. The result is a legal two-unit configuration (main house plus ADU) that is valued as a multi-family asset for financing purposes. We finance both the existing building and the ADU addition in a single loan, underwriting the combined two-unit value as the collateral basis.
Can I finance a multi-family property if I plan to live in one unit?
Yes. Owner-occupied multi-family — commonly called house hacking — is one of SF's most effective entry strategies for first-time investors who want to offset housing costs with rental income. We finance these acquisitions as investment loans (not owner-occupied consumer mortgages) when the borrower intends to rent at least one unit to a tenant. The unit you occupy does not generate rental income; the rental income from the other unit(s) is underwritten as the investment income component. For buildings where you plan to occupy a rent-controlled unit that a tenant currently occupies, owner-move-in eviction requirements apply and must be executed through the legally prescribed process with housing attorney guidance.
