New or established? Let's compare them honestly.
In September, 28% of Ada County single-family sales were brand new. Here is what each choice really costs, and what each one gives you.
New or established: which one is actually better for me?
Neither wins every time. New homes bring warranties, newer systems and choices. Established homes often bring a lower price, a quicker move-in and mature trees. In Meridian last month, new came in $15,010 below resale. In Eagle, new came in $164,950 above. Your price range, area and timing decide it.
Here is the surprise in the September numbers. In Meridian, the typical new home sold for $15,010 less than the typical resale home.
Many buyers assume new always costs more. Sometimes it does. Sometimes it doesn't. That is why I like to compare real homes side by side before anyone falls in love with a model.
I've guided new-construction buyers at every level. First-time buyers using every incentive to get in the door. Move-up buyers in mid-range homes. Luxury buyers. I've also helped clients find the land, choose the builder, and stay beside them until the house was finished.
I work with buyers on both sides of this choice. My job is to help you pick the one that fits your life, your budget and your move date.
| The question | New construction | Established (resale) |
|---|---|---|
| Median price, Ada County | $620,204 | $565,000 |
| Median price, Canyon County | $474,990 | $410,000 |
| Wait to move in | About nine months from permit to finish for a home built from the ground up. Quick move-in homes are sooner. | Closing is usually measured in weeks. |
| Warranty | A builder warranty, with terms that differ by builder. | No builder warranty. You rely on your inspection and the seller's disclosure. |
| Energy use | Built to the energy code in force at permit. Federal data show newer homes use less per square foot. | Depends on age and updates. Ask for 12 months of utility bills. |
| Early repairs | Usually fewer. Expect punch-list and warranty visits. | Depends on the roof, furnace, water heater and windows. |
| Lot and trees | Smaller lots are the national norm. Landscaping starts young. | In my experience, many sit on larger lots with mature trees. |
| Choices | You pick finishes, and sometimes the plan, at design-center prices. | You update after you buy, at your own pace. |
| Help with rate or costs | Builder incentives, depending on supply, demand and the time of year. | Seller credits, negotiated in your offer. |
Prices are Intermountain MLS medians for September 2026 1. The sections below explain each row and give the sources.
Is a new home really more expensive than a resale home here?
Usually, but not everywhere. In September 2026, the typical new single-family home cost $55,204 more than resale in Ada County and $64,990 more in Canyon County. In Meridian, new cost $15,010 less.
Why is the gap so different from city to city?
A median is the middle sale, not a like-for-like comparison. New and resale homes differ in size, age and finish. That is why Meridian and Eagle point in opposite directions.
My rule: use the median to spot a pattern, then compare actual homes. I do that with every buyer.
new is $274,900 higher
new is $15,010 lower
new is $164,950 higher
new is $54,145 higher
new is $142,683 higher
new is $112,000 higher
new is $58,495 higher
new is $64,500 higher
What about price per square foot?
Price per square foot is the fairer yardstick. Nationally, Zillow's July 2026 data put new homes at $205 per square foot against $212 for existing homes. 4
That reverses the old pattern. From 2018 through 2024, new homes cost more per square foot in 77 of 84 months. 4
Here, a Meridian brokerage team reported a median of $260.74 per square foot for new homes sold in subdivisions. That covers new homes only, so it can't show the gap on its own. 5 It is published by a brokerage, so I treat it as one data point.
For a true match, I compare new and resale in the same area, size and price range. Ask me and I'll run it for you.
Do new homes sell faster or slower than resale?
Resale moved faster in Ada County. Resale homes averaged 28 days on the market. New homes averaged 45, down from 57 a year ago. 1
Resale homes closed about 1.03% under their list price on average. New homes closed about 0.24% under. 1 Credits and rate buydowns don't show up in that percentage, so they are worth asking about.
If you find a resale home you love, be ready to decide quickly. New homes give you a little more time to think.
Will a builder help with my rate or closing costs, and will a seller?
Sometimes. Builders offer incentives when they need to sell, so it comes down to supply and demand and the time of year. Large production builders use rate buydowns most. The higher the price point, the less likely you'll see one.
Large builders such as CBH Homes and Hubble Homes are where I most often see buydowns, mostly on entry-level and spec homes. That price pattern is my experience. The national survey doesn't break incentives out by price.
What should I check before I say yes?
- The lender. The best offers are often tied to the builder's preferred lender. We compare that lender's rate and fees with an outside quote. 6
- Where the cost goes. Sometimes a buydown's cost is built into the home's price. You could get a lower rate and a larger loan. 6
- How long it lasts. A temporary buydown lowers your rate for the first one to three years. A permanent buydown lasts the life of the loan. 6
- Whether it's written down. An incentive mentioned at the model home isn't an incentive until it's in your contract.
Can I negotiate help on a resale home?
Yes. A resale seller can agree to pay part of your closing costs or a rate buydown. It is negotiated in your offer, and the answer depends on the home, the seller and the market.
I compare offers by what they're worth to you in total, not by the size of the headline. For more on timing and incentives, see how buying new works with your own agent.
What else will I pay for besides the price on the sign?
On a new build, expect lot premiums and design-center upgrades. Some builders also leave out landscaping, fencing or blinds. HOA dues apply to many homes, new and resale. Impact fees apply to new homes only. Ask for all of it in writing before you sign.
Lot premiums
Some lots cost more than others. Corner lots, views and backing to open space can all carry a premium. I ask what the base price includes and what the lot adds.
Design-center upgrades
Flooring, counters and fixtures add up quickly. Builder upgrades rarely return dollar for dollar at resale. That is my view, not market data. Some are worth it. Others are better done later.
Landscaping, fencing, blinds
What's included varies by builder. In my experience, some of these are extra. I read the included list line by line with you.
HOA dues
77% of Treasure Valley closings in July 2026 had an HOA fee. The median was $720 a year, about $60 a month. Ada's median was $816 and Canyon's was $595. 7
The HOA figures cover new and resale homes together. Dues range up to $8,640 a year in one Star community, so always ask what a community's dues cover. The report is published by a brokerage. 7
What are impact fees, and who pays them?
Impact fees help pay for roads and other public services that growth needs. The Ada County Highway District approved a single fee of $5,803 per single-family home, effective March 1, 2026. 8
The builder pays at permit. In my experience, the cost ends up in the price of the home. A resale purchase doesn't add this fee.
What should I budget for on an established home?
Plan for repairs a seller won't make, and for updates you want. A good inspection helps you size those costs before you commit. I help you decide which repair requests are worth making.
Fresh finishes. Fresh systems. Know what they cost.
How long will I wait, and what's it like living next to construction?
A home built from the ground up takes about nine months from permit to finish. Nationally, it takes 8.8 months. In the Mountain states, it takes 9.1. A finished new home or a resale can close much sooner.
What's the downside of buying early in a new community?
You may be living in a construction site. Expect dust, noise and truck traffic. Amenities such as a park or pool may not be finished when you move in. Schedules can slip.
In return, as a rule of thumb, early buyers get the better price. It's never cast in stone, because it comes down to supply and demand. For how pricing moves from phase to phase, see my page on timing in a new community.
What if I'm moving from out of state?
I came to Boise from Santa Barbara myself, so I know what a big move asks of you. We line up your sale, your move date and the home's finish date.
I ask the builder for an estimated completion date in writing, and for what happens if it runs late. I can join builder meetings by video and send you my notes.
Will a new home really cost less to heat and cool?
Usually, yes, compared with an older home. Federal data show homes built in 2016 or later use about 39% less energy per square foot than homes built before 1950. That is the oldest comparison, though. A newer resale home will sit much closer.
What does Idaho's energy code require?
Idaho's residential code is the 2018 model code with state amendments, in effect since January 1, 2021. 11 The federal Department of Energy estimates those amendments make it about 19.9% less efficient than the model code.
So the code is a floor, not a promise. Ask the builder for the home's energy rating.
What is a HERS score?
The HERS Index scores a home's energy efficiency. A typical home built to 2006 standards scores 100, and a lower number is better. A score of 70 means about 30% more efficient. 12
How do I compare a resale home?
Ask for 12 months of utility bills. Ask the age of the furnace, windows and insulation. Size and habits also change a bill, so I treat the average as a guide, not a promise.
Will I spend less on repairs in a new home?
Usually less in the first years. The National Association of Home Builders analyzed 2011 federal housing data. It put yearly maintenance at $241 for homes built after 2008 and $564 for homes built before 1960. That data is dated, but the direction makes sense.
The same analysis put total operating costs near 5% of a pre-1960 home's value. For homes built after 2008, it was under 3%. 13 Most Treasure Valley resale homes are newer than 1960, so the gap here is smaller.
What are the downsides of a new home?
New doesn't always mean perfect. Expect a punch list at the final walkthrough and a few warranty visits in year one. Young landscaping needs water and time to fill in.
How do I size up an established home?
Ask the age of the roof, furnace and water heater. Idaho law requires a resale seller to give you a signed property condition form within 10 days of an accepted offer. 14
That form reflects only what the seller knows. It isn't a substitute for an inspection. Newly built homes that have never been lived in are exempt. 14
Does a new home come with a warranty, and what does it cover?
In my experience, builders provide a written warranty, but the terms differ. One structure you'll see is called 1-2-10: one year on workmanship, two on major systems and ten on structure. I read each builder's actual document with you before you sign.
This structure comes from a warranty company's own guide, so it describes that company's product. Your builder's warranty may differ. 15
What does a structural warranty actually cover?
Usually real physical damage to load-bearing parts, such as foundations and framing. The damage generally has to make the home unsafe or unlivable. It doesn't cover cosmetic wear. 15
What if the builder doesn't fix a problem?
Idaho has a repair-notice process. Before you sue a builder over a defect, you send written notice. The builder then has 21 days to respond. 16
I'm not an attorney. For legal questions about your contract or a claim, I'll point you to a real estate attorney.
What about an established home?
A resale home has no builder warranty. You rely on your inspection, the seller's disclosure and your repair requests. That is one reason a thorough inspection matters so much.
Do I still need an inspection on a brand-new home?
Yes, I recommend one. A pre-drywall inspection lets an inspector see wiring, plumbing and framing before the walls close. A final inspection catches what's left. Once drywall goes up, that view is gone.
- Before drywall. Rough-in work is done, and the inspector can see inside the walls. 17
- At the final walkthrough. We document every item to fix, so the list is on paper before closing.
- Before year one ends. Some inspection companies offer a review before workmanship coverage runs out. 18
What does a pre-drywall inspection check?
- Duct connections, supply and return locations, and equipment.
- Plumbing lines, framing details and insulation.
- Defects such as missing nail plates, loose pipes and misaligned framing. 17
The article is published by Homes.com, a real estate site, so treat it as general guidance. 17
How do I get access?
Ask the builder about inspection access in writing before you sign. We decide together whether to bring in an independent inspector. I also make sure you know how a warranty claim works.
Which one holds its value better?
No one can promise that, and I won't. The local numbers don't settle it either. Your lot, location and the supply of homes nearby usually matter more than the year a home was built.
One month is a snapshot, and medians shift with the mix of homes that sell. The CoreLogic figures are national, cover a past decade, and come to me through a trade magazine. They show a pattern, not a forecast.
Is the new-home premium shrinking?
Nationally, yes. New homes now sell for slightly less per square foot than existing homes. 4 That is a national picture, so I check it against the street you are considering.
What helps a home hold its value?
In my experience, location, lot and a floor plan that suits many buyers matter most. For a new build, your timing within a community matters too. I explain how that works in my timing guide. This is my view, not market data.
What about lot size, mature trees and location?
New communities usually mean smaller lots and young trees. In my experience, many resale homes sit on larger lots with mature trees. The mix of homes also differs by area. In the Boise area last month, 294 resale homes sold against 30 new ones.
Nationally, 64% of new homes sold in 2025 sat on lots under one-fifth of an acre. 20 Trees that took decades to grow can't be built on a new lot.
Where can I find new homes, and where can I find resale?
New communities cluster where land is available, such as Meridian, Kuna, Nampa and Caldwell. Resale gives you far more choice inside Boise itself. My New Construction Guide maps where new homes are going up.
What about schools?
I don't rank schools or neighborhoods. Your assigned school depends on the address, so confirm it with the district. My Schools in Idaho page links to the official sources.
Same budget. Two very different homes.
How do I decide between new and established?
Start with your move date, your budget and the area you love. Then match them to the trade-offs above. I'll run new and resale homes in your price range side by side, with the true costs next to each.
New may fit you if…
- You want a builder warranty and fewer early repairs.
- You want to choose your own finishes.
- Your move date has room, about nine months for a home built from the ground up.
- The area you like has new communities.
- You want newer systems and a lower energy bill.
Established may fit you if…
- You need to move in weeks, not months.
- You want a larger lot or mature trees.
- You want to live inside Boise, where resale has far more choice.
- You would rather update a home over time.
- Price per square foot in your area favors resale.
On a new build, I'm at every meeting.
I attend every buyer and builder meeting, take notes, and get what was agreed into writing. Buyers and builders can remember a conversation differently. Things go unwritten without a buyer's agent.
In most cases, the builder pays my fee. We agree on it in writing before we tour anything.
Please call me before you visit a builder or register. Many builders only recognize an agent who is with you on your first visit. See how buying new works with your own agent.
Your questions, and mine.
Ask yourself
- What is my real move-in date, and can I wait about nine months if I build?
- Have I compared new and resale in the same area, size and price range, not just medians?
- Would I rather manage a builder timeline, or update an older home over time?
Ask me
- Can you run price per square foot for new and resale in my area and price range?
- What does this builder's warranty cover, in writing, and what does the contract include?
- What incentives are on the table now, and which lender are they tied to?
Let's compare real homes side by side.
Tell me your price range, your timeline and the areas you like. I'll pull new and resale homes that fit, with the true costs next to each.
Sources
- Intermountain MLS, Market Statistics, data as of October 29, 2026. Single-family homes, including single-family with acreage, closed in September 2026. New construction means homes listed as to be built, under construction, or new, never occupied.
- National Association of Home Builders (NAHB), HMI Special Questions for September 2026. Builders could select more than one incentive. Builder size is based on homes started in 2025.
- NAHB, Builder Sentiment Falls on Higher Interest Rates and Costs, Eye on Housing, September 2026.
- HousingWire, New homes now cost less than existing ones in many markets, citing Zillow data for July 2026.
- Trey Langford, Build Idaho, 2026 Guide to New Home Prices across Boise Metro Area, January 6, 2026. Published by a brokerage, using Intermountain MLS data.
- Choncé Maddox, Kiplinger, Builders Are Offering Big Mortgage Incentives: What Homebuyers Should Watch For, updated June 17, 2026.
- Trey Langford, Build Idaho, 2026 Treasure Valley HOA Dues Report, August 7, 2026. Based on July 2026 closed sales in Ada, Canyon and Gem counties, new and resale together. Published by a brokerage.
- BoiseDev, ACHD raises impact fees on homes, offices, December 8, 2025.
- NAHB, Single-Family Home Construction Time Declines in 2025, Eye on Housing, September 2026, using Census Bureau data.
- U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey release, March 29, 2023. The 39% figure is my calculation from EIA's published numbers.
- U.S. Department of Energy, Building Energy Codes Program, Idaho state profile.
- RESNET, What is the HERS Index?
- NAHB analysis of the 2011 American Housing Survey, reported by Pro Builder, Lower Operating Costs Mean New-Home Buyers Can Afford More House, April 2013.
- Idaho Legislature, Idaho Code Title 55, Chapter 25: Property Condition Disclosure.
- 2-10 Home Buyers Warranty, Do New Homes Come with a Builder's Warranty? Published by a warranty company.
- Idaho Legislature, Idaho Code 6-2503: Notice and Opportunity to Repair.
- Katherine Lutge, Homes.com, How Pre-Drywall Inspections Work in New Construction Homes, February 25, 2026.
- Structure Tech Home Inspections, Pre-drywall and 11-month warranty inspections, December 19, 2022. Published by an inspection company.
- Houston Agent Magazine, Price appreciation in new vs. existing homes: CoreLogic investigates, January 24, 2022.
- NAHB, Lot Sizes for New Homes Remained Near Historic Lows in 2025, July 2026.
General information only. Not legal, tax or lending advice. Every builder and contract is different.
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