The median home price in Waltham, MA, recently hit $824,607. When you finance a purchase at that price point, small changes in your interest rate translate to hundreds of dollars a month.
Key takeaway
No article can tell you today's Waltham mortgage rate. Your real rate comes from same-day Loan Estimates, so compare at least three lenders. The part you can influence locally is who pays to lower it. Waltham townhouses took a median 53 days to sell last quarter (based on 17 sales), which leaves room to ask a seller to fund a rate buydown, while single-family homes still sell over asking and rarely allow it.
Who this guide is for
You're financing a home purchase in Waltham and deciding whether to put your money into the price, the down payment, or a lower rate, and which type of home gives you room to negotiate.
Why your Waltham mortgage rate depends on the home you buy
Your rate is set by the lender for your file: your credit, down payment, loan amount, property type and occupancy. In Waltham, the type of home you shop also decides whether a seller will help buy that rate down. Sellers of slower-moving homes have more reason to negotiate than sellers who are fielding offers over asking. This information is for educational purposes and is not financial advice.
What a rate change costs on a typical Waltham home
A recent median single-family home in Waltham sold for $874,651. Put 20% down ($174,930) and your loan amount is about $699,721.
For illustration only, not today's rate: principal and interest on that loan runs about $4,195 a month at 6%, climbs to $4,423 at 6.5%, and hits $4,655 at 7%. Each half-point costs you roughly $230 a month, and a full point adds about $5,500 a year to your payments.
Over a few years of ownership, that half-point matters more than most price reductions buyers win on Waltham single-family homes. The choice is whether to spend cash on discount points to buy the rate down or keep it for a larger down payment. Ask each lender to price the loan both ways, on the same day.
Property taxes, homeowner insurance and any HOA dues sit on top of that principal and interest figure, so budget for the full monthly payment, not just the loan.
Mortgage rates and negotiating room by home type
A seller-funded buydown lets the seller pay a lump sum at closing to lower your interest rate. A permanent buydown lowers the rate for the life of the loan. A temporary buydown lowers it for the first year or two.
Fannie Mae caps these seller contributions on a primary residence by loan-to-value ratio. The cap is 3% of value when LTV is above 90%, 6% from 75.01% to 90%, and 9% at 75% or less.
Townhouses in Waltham
If you want a seller to help pay for a lower rate, townhouses are where to start. They had over 5 months of supply last quarter, the most of any home type in the local market, and sat for a median of 53 days on market.
A buydown can beat an equal-dollar price cut on your monthly payment. Ask the listing agent whether the seller would consider a rate credit instead of a price reduction.
The catch: these figures rest on a small sample of 17 sales, and a temporary buydown ends after a year or two. On a fixed-rate loan, Fannie Mae requires you to qualify at the full note rate, not the lower starting rate. Ask the lender what the payment becomes in year three and budget for that number, not the teaser.
Single-family homes in Waltham
Almost half of Waltham single-family homes sold for more than asking last quarter, and the median days on market was 21. Sellers here rarely fund buydowns. Start with a fully underwritten pre-approval and quotes priced with and without points. A rate lock timed to the closing date matters more than asking for a credit.
What you give up is seller assistance, so any buydown comes out of your own cash. An above-list purchase price can also leave a gap if the appraisal comes in low. Ask your lender how an appraisal shortfall would affect your loan-to-value ratio and pricing.
Condos in Waltham
The condo median sale price recently hit $604,938, which means each rate step costs fewer dollars than on a single-family loan. That's the appeal.
Condo financing involves lender project reviews, FHA project approval and HOA dues. Those dues count in your debt-to-income ratio, so higher dues shrink the loan you qualify for. If you plan to use an FHA loan, ask your lender to confirm the complex is approved in HUD's FHA condo database before you make an offer. FHA won't insure a unit in a project that hasn't been approved.
The catch: dues and project eligibility can cost you more than the interest rate does. Ask the HOA for current monthly dues, the reserve balance and any planned special assessments before you lock your loan.
Loan limits and loan types in Waltham
Waltham is in Middlesex County, which the Federal Housing Finance Agency designates as a high-cost area. For 2026, the conforming one-unit loan limit for the county is $962,550, and the FHA loan limit for the county matches that figure.
Whether your loan amount sits under the baseline limit, in high-balance territory or in jumbo territory changes how your loan is priced. In the worked example above, 20% down on that single-family median keeps the loan well within conforming limits. Smaller down payments on pricier homes push the loan amount up and can shift you into a different pricing tier. A few thousand dollars more down can move a loan back into cheaper pricing, so if you're near the county limit, ask your lender to quote two loan amounts.
You also have to choose between fixed and adjustable rates, and between 30-year and 15-year terms. First-time buyers can also look at state programs such as MassHousing.
How to choose a mortgage lender in Waltham
Buyers can source loans through local banks, credit unions, mortgage brokers and direct lenders. The Consumer Financial Protection Bureau states that homebuyers can potentially save $600 to $1,200 a year by getting Loan Estimates from multiple lenders. Request Loan Estimates from at least three lenders on the same day. Compare the interest rate, discount points and the Section A lender charges so the quotes line up.
Per the CFPB, multiple mortgage credit inquiries count as a single inquiry for credit scoring, as long as the last check occurs within 45 days of the first. You can shop around without repeatedly lowering your credit score.
Ask each lender whether they can close on a standard Waltham contract timeline. Confirm the lock period, what happens if closing slips, and what a lock extension costs. Ask if they portfolio-lend or review condo projects in-house, which can speed things up. Lender charges are only one part of your buyer closing costs, so check the full cash to close on each Loan Estimate.
I can introduce you to local lenders who understand Waltham condo reviews and contract timelines.
What mortgage rates mean for Waltham sellers
With the city-wide market sitting at 3.6 months of supply, rate-sensitive buyers compare monthly payments rather than just list prices. Offering a buydown credit can widen your buyer pool more than a standard price cut, especially for townhouses.
Pricing a home correctly requires understanding what buyers can afford at current rates. Let me know if you want help pricing a listing around realistic buyer payments.
At a glance
- All homes, median sale price: $824,607, down 3% year over year (103 sales, 90 days ending 2026-09-30)
- All homes: 100.1% median sale-to-list, 34.7% sold above list, 24 median days on market, 3.6 months of supply, 121 homes in inventory, $484 median price per sq ft (90 days ending 2026-09-30)
- Single family, median sale price: $874,651, down 2.8% year over year (54 sales, 90 days ending 2026-09-30)
- Single family: 101.1% median sale-to-list, 45.3% sold above list, 21 median days on market, 3.3 months of supply, $500 median price per sq ft (90 days ending 2026-09-30)
- Townhouse, median sale price: $825,010, down 5.7% year over year (based on 17 sales, 90 days ending 2026-09-30; small sample, treat with caution)
- Townhouse: 99.3% median sale-to-list, 23.5% sold above list, 53 median days on market, 5.1 months of supply, 29 in inventory (based on 17 sales, 90 days ending 2026-09-30)
- Condo, median sale price: $604,938, up 33% year over year (based on 22 sales, 90 days ending 2026-09-30; small sample, likely reflects which units sold rather than a true price jump)
- Condo: 99.5% median sale-to-list, 22.7% sold above list, 24 median days on market, 3.3 months of supply, $570 median price per sq ft (based on 22 sales, 90 days ending 2026-09-30)
Waltham Mortgage Rate FAQs
What is the current mortgage rate in Waltham, MA?
There is no single rate for Waltham. The national benchmark is Freddie Mac's Primary Mortgage Market Survey, released every Thursday from applications submitted by lenders nationwide. Your own rate can sit above or below that average.
How can I get a 4% mortgage rate?
You can lower your rate by paying for discount points, using a permanent buydown, or securing a temporary buydown funded by the seller. Ask lenders to price points to a target rate. Townhouse sellers are the likeliest to help pay.
Will mortgage rates get to 4% in 2026?
Nobody can reliably predict exactly where rates will land. Refinancing later is possible if rates drop, but it carries closing costs, and a home's purchase price is set when you buy.
What salary do you need for a $500,000 mortgage?
It depends on maximum debt-to-income guidelines and your interest rate. For illustration only, at the lowest rate in the worked example above, a $500,000 loan costs about $2,997 a month in principal and interest. You need enough gross income to cover that plus all other debts. Property taxes, homeowner insurance and HOA dues count toward your limit, so a condo with dues requires a higher salary than a single-family home for the same loan size.
Do mortgage rates vary by state?
Only modestly. For a Waltham buyer, your loan amount relative to the Middlesex County limit often affects your pricing more than the state you buy in.
Do mortgage rates change with inflation?
Yes, mortgage rates generally move with inflation expectations. Fannie Mae notes that the 30-year mortgage rate is benchmarked to the 10-year Treasury note, which reacts strongly to inflation data. The Federal Reserve influences mortgage rates indirectly through its effect on these Treasury yields rather than setting mortgage rates directly.
What credit score do I need to get a good mortgage rate?
Fannie Mae's Loan-Level Price Adjustment matrix improves pricing in steps at credit score bands like 680, 700, 720, 740, 760 and 780+. Ask your lender which band your file falls into and what reaching the next band would save you each month.
How long can you lock a mortgage rate?
The Consumer Financial Protection Bureau states that rate locks are typically available for 30, 45 or 60 days, and sometimes longer. The rate holds as long as you close within that time frame and your application doesn't change. Longer locks usually cost more upfront or carry a slightly higher rate, so match your lock to the closing date on your purchase agreement.
Sources
Redfin: Data Center
CFPB: Request and review multiple Loan Estimates
Freddie Mac: Primary Mortgage Market Survey
Mortgage Calculator: Conforming loan limits
LendingTree: FHA loan limits in Massachusetts
Fannie Mae: Interested party contributions
Fannie Mae: Temporary interest rate buydowns
HUD: FHA Condominium project approval
CFPB: What exactly happens when a mortgage lender checks my credit
Fannie Mae: The 30-year mortgage rate
Freddie Mac: Mortgage rate survey explained
Fannie Mae: Loan-Level Price Adjustment Matrix
CFPB: What's a lock-in or a rate lock
