Jumbo pricing in the Princeton corridor
Princeton, West Windsor and Hopewell purchases often exceed conforming limits, which brings tighter reserve and documentation requirements.
01Financing homes in Mercer County
What matters when you finance a Mercer County home
AI REMCO L.L.C. is a licensed mortgage broker based in Oldwick, New Jersey, in Tewksbury Township, serving borrowers throughout Mercer County, New Jersey.
Mercer County spans the state capital, the Princeton academic and research corridor, and large suburban townships along Route 1. Employment is unusually stable — state government, universities, hospitals, pharmaceutical and research employers — which shows up in mortgage files as steady salaried income and long job tenure.
Princeton, West Windsor and Hopewell frequently produce loan amounts above conforming limits, making jumbo underwriting standard there. Hamilton, Ewing, Lawrence and Trenton cover the more moderately priced end, where FHA and low-down-payment conventional financing do most of the work.
Mercer also has meaningful condo and townhouse inventory along the Route 1 corridor and in Plainsboro-adjacent developments, which brings association project review into the process.
Most Mercer County files land in one of a few programs: Jumbo loans in Mercer County, Conventional loans in Mercer County and FHA loans in Mercer County. Business owners can start with a self-employed mortgage documented from returns or bank statements, and first-time buyers should read how New Jersey down payment assistance pairs with a first mortgage.
Mercer County, NJ mortgage facts
Loan limit figures published by the Federal Housing Finance Agency for 2026 — fhfa.gov conforming loan limits. Last reviewed 2026-09-05. For reference only.
Mercer County, NJ at a glance
- Median home valueThe middle value of owner-occupied homes in Mercer County as estimated by their owners in the Census survey (2020-2024). Half are worth more, half less. It is not a sale price or an appraisal.
- $377,700
- Median property tax paidThe middle yearly real estate tax bill reported by homeowners in the Census survey. The percentage is that bill divided by the median home value, as a rough guide. Your own bill depends on the town, the assessment and any exemptions; ask for the actual tax bill before you buy.
- $8,909/yr
- About 2.36% of the median home value
- Home price changeFrom the FHFA House Price Index for the county, built from repeat sales and appraisals on Fannie Mae and Freddie Mac loans. The 5-year figure compares the index now with 5 years earlier. Past changes do not predict future prices.
- +5.7% in 2025
- +67.5% over 5 years (2020-2025)
- Median household incomeThe middle yearly household income before taxes in Mercer County (Census survey, 2020-2024, in 2024 dollars).
- $100,645
- HomeownersThe share of occupied homes lived in by their owners; the rest are rented. From the Census survey.
- 62%
- 89,569 of 144,114 occupied homes are owner-occupied
- Typical home builtThe median year homes in the county were built (Census survey). Older housing can mean more repairs flagged by inspectors and appraisers, and homes built before 1978 require a lead-based paint disclosure.
- 1969
- Many homes predate 1978: expect lead-paint disclosures, and older systems can come up in inspections and appraisals
- Homes in a high-risk flood zoneHomes inside FEMA's Special Flood Hazard Area (the 1% annual chance floodplain). With a government-backed or federally regulated mortgage, flood insurance is required in this zone. Check the exact property: the zone can change street by street.
- 1.7%
- 1,826 of 107,040 homes
- Flood insurance policiesNational Flood Insurance Program policies in force on homes in the county, and the number of NFIP flood claims filed since 2015. From FEMA (OpenFEMA), as of August 2026.
- 1,294
- 230 flood claims since 2015
- PopulationEstimated residents of Mercer County (Census survey, 2020-2024).
- 385,864
Sources: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates; FHFA House Price Index, county annual, 2025; FEMA OpenFEMA, National Flood Insurance Program data, as of August 2026. Public estimates for the county as a whole, for general information only; they are not an appraisal, a tax figure for any property or a prediction.
Mercer County housing market
Government and Freddie Mac data, updated as each source publishes.
- Home prices, past yearChange in the Freddie Mac House Price Index for Trenton-Princeton NJ, which tracks repeat sales and refinance appraisals of the same homes. It covers the whole metro area, not only this county. Past changes do not predict future prices.
- +3.4%
- July 2026 vs a year earlier · +48.8% over 5 years
- Home purchase loans, 2025First-lien and other mortgages made to buy a home, as reported by lenders under the Home Mortgage Disclosure Act (HMDA) and published by the CFPB. Cash purchases are not included, so this undercounts total sales. Published once a year.
- 3,476
- +4.2% vs 2024
- Average purchase loan, 2025Total amount of the home purchase loans reported under HMDA divided by their number. It is a loan size, not a home price: it leaves out down payments.
- $431,789
- FHA and VA share of loans, 2025Share of the conventional, FHA and VA mortgages made that year (purchase and refinance) that were FHA or VA loans, from HMDA. A higher share usually means more low-down-payment and first-time buyers.
- 11.0%
- 641 FHA · 167 VA of 7,357 conventional, FHA and VA loans made
- Refinances, 2025Refinance loans made that year, from HMDA: rate-and-term (a new rate or term) and cash-out (borrowing against equity).
- 2,527
- 1,206 rate-and-term · 1,321 cash-out
- New homes permitted, last 12 monthsHousing units authorized by building permits (single-family and multi-family), from the Census Bureau's Building Permits Survey. New construction adds to future supply.
- 929
- -40.6% vs the year before · 43 in August 2026
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Sources: Consumer Financial Protection Bureau, HMDA data (loans originated); U.S. Census Bureau, Building Permits Survey; Freddie Mac House Price Index (FMHPI). Figures describe the past and are for general information only; they are not an appraisal, a forecast or an offer of credit.
02Communities we serve
Mercer County municipalities and areas
Route 1, Route 295, the Northeast Corridor and the River Line connect Mercer to both New York and Philadelphia markets.
PrincetonHamiltonWest WindsorLawrenceEwingTrentonHopewellRobbinsvilleEast WindsorHightstownPenningtonWashington Township
AI REMCO L.L.C. is based in Oldwick, NJ, in Tewksbury Township, and serves borrowers throughout Mercer County — we do not maintain a branch office in every county we serve.
03Local considerations
Mercer County home-buying considerations
University and research employment documentation
Academic contracts, grant-funded positions and fellowship income are documented differently than standard salary. Lender treatment varies, and it affects qualification.
Trenton and Ewing condition standards
Older urban housing can trigger FHA or VA repair requirements. Renovation financing is often the cleaner option where work is needed.
Cross-border comparison with Pennsylvania
Many Mercer buyers also look at Bucks County. Because we are licensed in New Jersey and Pennsylvania, both sides can be priced without changing brokers.
04How the financing works
Financing a Mercer County home, step by step
New Jersey property taxes in the payment
New Jersey property taxes are set at the municipal level and vary widely between neighboring towns, so two similarly priced homes can carry very different monthly payments. Lenders escrow taxes and insurance in most cases, which means the tax bill affects both the payment and the income you need to qualify. We use the actual assessed figure for the parcel rather than a county average, and any figure we quote before the tax collector's current bill is confirmed is an estimate.
New Jersey closing mechanics
New Jersey closings are attorney-review based on the contract side and involve title search, survey where required, recording fees and the state's realty transfer fee on a sale. Those third-party costs are set by the provider, the county clerk and the state — not by the broker — and appear on the Loan Estimate and Closing Disclosure the lender issues.
Documents, the appraisal, credit review, rate locks and refinancing work the same way in every county: see how the mortgage process works.
05Loan programs
Loan programs that fit Mercer County
Mercer County uses the 2026 national baseline conforming limit of $832,750 on a one-unit home. Above that amount a purchase or refinance moves to jumbo guidelines, which set their own credit, reserve and appraisal requirements.
- Jumbo loans
Standard in Princeton, West Windsor and Hopewell.
- Conventional loans
The core program across Hamilton, Lawrence and Robbinsville.
- FHA loans
Practical in Trenton, Ewing and Hightstown.
- First-time home buyer financing
Strong first-purchase activity throughout the county's mid-priced towns.
- VA loans
Relevant for the county's veteran and Joint Base-adjacent population.
- Self-employed mortgage options
For consultants and contractors serving state government and research employers.
06Questions borrowers ask
Mercer County mortgage questions
What is the 2026 conforming loan limit in Mercer County, NJ?
The 2026 FHFA one-unit conforming loan limit in Mercer County is $832,750. Loan amounts at or below that figure follow conventional conforming guidelines; above it, the loan is a jumbo and is underwritten to the investor's own credit, reserve and appraisal requirements.
Can grant or contract academic income be used to qualify?
Often yes, with documentation of the contract term and continuation likelihood. Guidelines vary between lenders on how much history is required, which is one reason comparing channels matters.
Do you handle both New Jersey and Pennsylvania purchases?
Yes. AI REMCO L.L.C. is licensed for mortgage brokerage in New Jersey, Pennsylvania and Florida under NMLS #2560393, so a Mercer versus Bucks County comparison can be run in one place.
Which Mercer County towns does Ai Remco work in?
All of them. AI REMCO L.L.C. is licensed as a mortgage broker in New Jersey and works with borrowers anywhere in Mercer County, including municipalities not listed on this page. Files are handled remotely from Tewksbury, New Jersey — there is no Mercer County branch office.
Do property taxes in Mercer County affect how much I can borrow?
Yes. Taxes and insurance are part of the housing expense a lender counts, so a higher tax bill reduces the loan amount a given income supports. We use the parcel's actual assessed figure where available, and treat pre-closing figures as estimates.
Talk through a Mercer County purchase or refinance
Reach a licensed loan officer at (732) 561-4292 or [email protected]. Mon–Fri, 9am–8pm ET.
Verified against public program guidance as of September 2026.