Marlborough, Franklin, Wrentham and I-495 Belt Home Loans: Middlesex/Norfolk vs Worcester Limits
Updated October 2026
The I-495 belt is the single most consequential place in Massachusetts to know your county. Marlborough and Hudson sit in Middlesex County and carry the Greater Boston high-cost conforming ceiling. Drive fifteen minutes west to Northborough or Westborough and you are in Worcester County, where the 2026 baseline conforming limit is $832,750. Franklin, Wrentham and Foxborough are Norfolk County and keep the high-cost ceiling. Plainville and Bellingham straddle the same seam. Two houses on opposite sides of a town line, identical in price and condition, can require completely different loan products.
The Seam, Mapped
| Town | County | 2026 one-unit ceiling |
|---|---|---|
| Marlborough | Middlesex | High-cost ceiling |
| Hudson | Middlesex | High-cost ceiling |
| Franklin | Norfolk | High-cost ceiling |
| Wrentham | Norfolk | High-cost ceiling |
| Foxborough | Norfolk | High-cost ceiling |
| Northborough | Worcester | $832,750 |
| Westborough | Worcester | $832,750 |
| Milford | Worcester | $832,750 |
At an $880,000 purchase price this is not academic. In Franklin, that is a conforming loan at 10% down with cancellable mortgage insurance. In Westborough, the same price with 10% down produces a loan above $832,750, which means a jumbo product, likely 15% down minimum, and six months of reserves. The gap between the two outcomes is frequently $400 or more per month. Run both in the monthly payment calculator and verify the county ceiling directly at FHFA Loan Limits before you set your offer price. The 2026 FHA floor of $541,287 also applies across all of these towns, which puts FHA within reach in Marlborough, Hudson, Milford and Bellingham but not in most of Franklin or Wrentham.
Costs, Overrides and Diligence
No town along the belt offers a residential exemption; that is a Boston-area and gateway-city tool. Several belt towns have adopted the Community Preservation Act, adding a 1% to 3% surcharge layered on top of a levy already capped by Proposition 2.5. Local assessment mechanics are documented by the Massachusetts Department of Revenue Division of Local Services, and the Consumer Financial Protection Bureau covers how escrow handles a surcharge that changes mid-year.
- Deeds excise: $4.56 per $1,000, seller-paid, uniform across Middlesex, Norfolk and Worcester
- Title 5: Wrentham, Foxborough and outer Hudson have extensive unsewered acreage
- Two-contract sequence: the Offer to Purchase binds, then the P&S follows roughly five to ten days later with attorneys on both sides
Use the closing cost estimator to size cash to close. If your search drifts west, the Worcester hub and the Shrewsbury and Westborough guide cover the baseline-limit side of the seam.
Compare Current Mortgage Rates
Compare current APRs, points, fees, and estimated monthly payments from participating lenders below.
Loan Program Comparison: 2026 Benchmarks
Marlborough, Franklin, Wrentham and I 495 Belt Home Loans: Middlesex/Norfolk vs Worcester Limits — Choose a mortgage by comparing eligibility, upfront cash and total monthly costs, not the advertised rate alone. Conventional, FHA, VA and USDA serve different borrowers. Confirm county limits, taxes, insurance and lender requirements before comparing personalized Loan Estimates for your household.
Historical 2025 one-unit comparison: conforming $806,500; FHA floor $524,225. County and unit-count limits can differ.
| Loan program | Down payment / equity | 2026 one-unit baseline | Costs and page-specific comparison |
|---|---|---|---|
| Conventional | 3%–5% subject to eligibility | $832,750 | PMI generally below 20% down |
| FHA | 3.5% at 580+; 10% at 500–579 | $541,287 floor | 1.75% upfront MIP; 0.55% annual for >95% LTV, base loan ≤$726,200, term >15 years |
| VA | 0% for eligible borrowers | No VA limit with full entitlement | No monthly PMI; funding fee unless exempt |
| USDA | 0% for eligible borrowers | Income, address and repayment eligibility | Guarantee and annual fees; confirm current schedule |
| Jumbo | Lender-specific cash and reserves | Above applicable conforming limit | Lender-specific pricing and insurance |
| Home Equity / Refinance | Equity and underwriting dependent | Property and lender dependent | Compare closing costs, term and break-even |
Sources: FHFA limits; HUD FHA limits.
Editorial Methodology & Primary Sources
Verification date: Not recorded; check the primary source and lender timestamp before relying on an estimate.
Rate comparisons use participating lender feeds, not a whole-market survey or guaranteed offers. Freddie Mac PMMS is a market benchmark, not a personalized quote. Calculator models rely on published regulatory formulas and disclosed assumptions rather than fabricated first-person loan testing.
Monthly principal and interest use the amortization formula P × r / (1 − (1 + r)−n), where r is the monthly note rate and n is the number of payments; at zero interest use P / n. PITI adds monthly property taxes and homeowners insurance; PMI is separate. APR includes applicable finance charges under Regulation Z and is not the note rate used for payments. Compare lender Loan Estimates for actual APR and fees.
- Consumer Financial Protection Bureau (CFPB) — Loan Estimates, APR and borrower disclosures; Regulation Z.
- U.S. Department of Housing and Urban Development (HUD / FHA) — FHA program guidance.
- U.S. Department of Veterans Affairs (VA) — VA loan eligibility and benefits.
- Freddie Mac Primary Mortgage Market Survey (PMMS) — published rate benchmarks.
- U.S. Census state tax collections — state property tax benchmarks; confirm parcel-specific assessments and exemptions with the state revenue department and local assessor.
The payment snapshot uses illustrative annual taxes of 1% of home price, $1,200 insurance and 0.5% PMI below 20% down, not verified local quotes. Other calculators disclose their inputs and assumptions. Published guidance and lender feeds may change independently; confirm current program rules, taxes and offers before a decision.