Portsmouth's older neighborhoods are full of two-family homes built when the shipyard and the port needed worker housing. Many still rent by the unit today, and they are the most common 2-4 unit purchase on the Seacoast.
In short: LendingStreet finances duplexes, triplexes and fourplexes in Portsmouth, Dover, Rochester and across the Seacoast with DSCR loans that qualify on the combined rent of all units. Purchases go up to 80% LTV and cash-out refinances up to 75%, with a 620 minimum credit score, no W-2s or tax returns and LLC borrowers standard. Loans start at $150,000 with no stated maximum.
Portsmouth's West End, the Islington Street corridor, Christian Shore and the streets around Middle Street hold many 19th and early 20th century two-families, often with one unit per floor. Some have been converted to condos, so confirm that the building is still a single parcel before you make an offer.
Dover and Rochester have more triplexes and fourplexes, many near their downtown mill districts, at lower prices than Portsmouth. Somersworth, Newmarket and Exeter add a mix of two-families and converted Victorians.
| Area | Common 2-4 unit type | What to watch |
|---|---|---|
| Portsmouth West End, Islington St | Up-and-down two-families | Condo conversions, parking, historic district rules |
| Christian Shore, Atlantic Heights | Two-families, some triplexes | Older systems and lead paint |
| Dover downtown | Triplexes and fourplexes | Separate utilities, egress |
| Rochester | Duplexes and triplexes | Lower rents, stronger ratios |
The DSCR is total monthly rent from every unit divided by the full monthly payment: principal and interest, property taxes, insurance and any association dues. Vacant units are usually counted at market rent based on the appraiser's rent schedule. The standard minimum is 1.0x, and sub-1.0 programs exist for some files.
Because there is no owner-occupied unit, every unit's rent counts and the loan is a business-purpose loan. Our investor loans are business-purpose loans on non-owner-occupied property.
This example is illustrative and not a quote. An investor buys a West End two-family for $720,000. The units rent for $2,350 and $2,150, or $4,500 combined. Taxes are budgeted at $850 a month and insurance at $210.
At 75% LTV the loan is $540,000 and estimated principal and interest is about $3,869. The total payment is about $4,929, and DSCR is about 0.91x, below the 1.0x standard minimum. Portsmouth's high prices relative to rent are the reason.
At 65% LTV the loan is $468,000, estimated principal and interest falls to about $3,353 and the total payment to about $4,413. DSCR rises to about 1.02x, which clears 1.0x. The investor brings more cash to closing, but the loan works on rent alone. A sub-1.0 DSCR program is the other path for buyers who want more leverage.
| Item | Portsmouth at 75% | Portsmouth at 65% | Rochester triplex |
|---|---|---|---|
| Purchase price | $720,000 | $720,000 | $560,000 |
| LTV | 75% | 65% | 80% |
| Loan amount | $540,000 | $468,000 | $448,000 |
| Principal and interest | $3,869 | $3,353 | $3,210 |
| Taxes and insurance | $1,060 | $1,060 | $870 |
| Combined rent | $4,500 | $4,500 | $4,500 |
| DSCR | About 0.91x | About 1.02x | About 1.10x |
In the same illustrative format, a Rochester triplex bought for $560,000 with units renting for $1,550, $1,500 and $1,450 supports an 80% LTV loan of $448,000. Estimated principal and interest is about $3,210, the total payment about $4,080 and DSCR about 1.10x.
The lower price and three rent streams are why many Seacoast investors buy their first multi-unit building outside Portsmouth. Three units also spread vacancy risk: one empty unit costs a third of the rent, not half. The trade-off is older buildings, higher repair budgets and lower appreciation than downtown Portsmouth has shown, so many investors hold both kinds of property.
Portsmouth regulates the number of dwelling units allowed by zoning district, and it has a historic district covering much of the older downtown core where exterior changes need review. Adding a unit to an existing two-family usually needs zoning approval, and New Hampshire's accessory dwelling unit law sets a floor for what towns must allow but does not turn every lot into a multifamily lot.
When you buy, confirm the legal unit count with the city or town. An appraiser will value the building on its legal use, and an illegal third unit generally will not count toward rent.
New Hampshire has no income or sales tax, so towns rely heavily on property taxes. Rates differ sharply between Portsmouth, Dover and Rochester, and full revaluations at least every five years can change a bill. Use the current bill and ask whether a revaluation is coming.
Many older two-families share a boiler or water heater. If the owner pays heat, that cost does not enter the DSCR formula directly, but it affects your real cash flow in a New Hampshire winter.
Seacoast rental demand comes from several steady sources: the Portsmouth Naval Shipyard, Portsmouth Regional Hospital and other medical employers, the businesses at the Pease Tradeport, and the University of New Hampshire in Durham. Many tenants commute from Dover and Rochester into Portsmouth, which keeps vacancy low across the region.
Rents in Portsmouth run well above Dover and Rochester, but prices run higher still, which is why ratios often look better inland. When you estimate rent, use recent leases for similar units in the same town and neighborhood, not a Seacoast-wide average. Parking, in-unit laundry and separate heat can make a meaningful difference in what a downtown Portsmouth unit commands.
New Hampshire landlord-tenant law sets notice and eviction rules for residential tenancies, and leases should follow it. A local property manager or attorney can confirm current requirements.
If the building has 5 to 8 units, it is still residential for our programs, though max LTV can be lower and varies by program. See our 5-8 unit DSCR page for Portsmouth for details. Buildings with 9 or more units fall under commercial financing.
Send the address, price, unit mix and current or market rents. The team will run the combined-rent ratio at a few loan amounts and come back with options. Call (877) 298-1001 or use the form below.
If you already own a Seacoast two-family with a short-term loan or an older mortgage, the same review applies to a rate-and-term or cash-out refinance; see our Portsmouth cash-out page for the cash-out limits and seasoning.
Yes. Rent from every unit counts, since no unit is owner-occupied.
The up-and-down two-family, common in the West End and older neighborhoods near downtown.
Often, yes. Prices are lower relative to rent, so triplexes and fourplexes there tend to produce stronger ratios.
The appraiser's market rent estimate is typically used for vacant units.
If each unit is a separate condo, it is financed as a condo, not a 2-4 unit building. Confirm how the building is titled.
Up to 80% LTV on a purchase and 75% on a cash-out refinance, subject to the property's ratio.
No. The loan qualifies on the property's rent.
Yes. LLC borrowers are standard.
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