Selling now in Martin County, FL
Newfield
Up to 4,200 homes on about 3,411 acres, in unincorporated Martin County
Seventy per cent of this land stays open, there is a working farm written into the zoning, and the trails are open to the public. Two things are worth knowing before you tour. This is the first year the community district bills anyone; last year every assessment was zero. And the 125-acre water-treatment marsh promised in the original agreement was replaced in July 2026 with a county site for excavated muck and sediment. Both below.
- Area
- Martin County, FL
- Approved
- Up to 4,200
- Acreage
- About 3,411
- Open space
- 70 percent
At a glance
Newfield fast facts
What is published, and what you will have to ask for. The unpublished ones are the difference between the sticker price and what the house actually costs you every month.
- Area
- Near Palm City, unincorporated Martin County
- Approved for
- Up to 4,200 homes on about 3,411 acres
- Open space required
- At least 70 percent of the site
- Agriculture required
- About 120 acres, as a minimum
- Public recreation land
- At least 320 acres at buildout
- Builder
- Mattamy Homes, the only one here
- District assessment
- About $1,694 to $3,184 a year
- Assessed last year
- Nothing. This is the first bill
- District debt runs to
- 2056
- Hurricane evacuation zone
- None. It is outside all of them
- Building height limit
- Four storeys, same as the county
- Which phase your homesite is in
- Ask before you contractGet pricing
- Current pricing and incentives
- Ask before you contractGet pricing
- Zoned schools
- The district publishes no mapGet pricing
Figures come from the county's comprehensive plan policy for this property, the recorded development agreement and the amendment approved in July 2026, the planning staff report, the community district's own adopted budgets and audited financial statements, the preserve management plan, federal and state flood and evacuation mapping, and the state insurance regulator, all as of September 2026. Pricing and plans are as published by the builder and change frequently. All details are subject to change without notice.
Where it is
West of the turnpike in unincorporated Martin County, with a Palm City mailing address and a county tax bill. The community's spine road was renamed by the county in 2023, so older maps and newer ones disagree about what it is called. Drive the commute and the school run yourself before you commit.
How to buy Newfield without leaving money on the table
The person at the builder's sales desk works for the builder. You can have a Florida agent on your side instead, touring with you, reading the contract line by line, and pushing for every incentive, upgrade and closing-cost credit the builder will give. It costs you nothing: on new construction the builder already budgets your agent's fee whether you bring one or not. The one catch is timing. You usually need your own agent from the very first visit, or the builder will not recognise them and you lose it. Start here and we will set it up.
Set up a tourWhat a local would tell you
The water-treatment marsh became a place to put dredged muck, eight weeks ago
To understand why this matters you have to know why this community exists at all.Martin County does not hand out approvals like this one. The county invented a future land use category for this single property, and it justified doing so on four public benefits. One of them was water quality. The policy requires development here to enhance water quality in the river and the lagoon by temporarily retaining and naturally cleaning nutrient-rich canal water before it discharges.
The 2020 development agreement made that concrete. The master developer was to design, obtain all necessary permits for, and construct a stormwater treatment area on about 125 acres, and the agreement expressly said that area may be used for recreational activities that do not interfere with the system. A treatment marsh you could walk.
An amendment to that agreement, approved by the county commission in July 2026, strikes that sentence. In its place the master developer must instead identify 125 acres to be used by the county for environmental purposes, including but not limited to the placement, storage, grading and management of excavated materials such as muck, soils, sediments and related byproducts. The amendment names it the Environmental Parcel. And it sets a hard trigger: before a building permit issues for the 700th home, that parcel must be conveyed to the county.
So the same 125 acres went from a treatment marsh with permitted recreational use to a county site for managing dredged material, and the county's own recital says it determined this was in the public interest to benefit the river. It may well be. It may end up as quiet graded land. But no county document we could find states the volume, the source, how long it runs, or where inside the 125 acres it goes, and anyone touring this community today is not being told the headline water-quality feature of the original bargain was traded away weeks ago.
Two honest limits. We verified the approved redline and the commission's vote from the county's own legislative record rather than from the recorded, executed instrument at the clerk. And development agreements get amended routinely; this is what the current one says, not a prophecy.
Second thing, and it will hit your escrow analysis: this is the first year the community district bills anybody. Last year's adopted budget shows operating assessments of zero and debt assessments of zero, the whole district funded by a developer contribution, with a note working out an annual operating cost of about $79 a unit. This year every product pays about $1,194 in operations plus debt of roughly $500 to $1,990 depending on product. Most single-family homes land between about $2,944 and $3,184 a year. If you are looking at a resale here and pulling last year's tax bill, it will not show what you are about to pay.
One more line in that budget worth your attention: a revenue entry labelled developer contribution of about $504,000, with the comment that it is fifty per cent of the lifestyle expenditures. The developer is paying exactly half the events, the clubs, the fitness classes and the staff this year. Nothing in the budget commits it beyond this year, and when it stops the operating assessment is what absorbs it.
So ask five things in writing before you contract: what is actually planned for the 125-acre Environmental Parcel and on what schedule; the current-year assessment for your exact product, not last year's; what the operating assessment looks like once the developer stops paying half the lifestyle budget; which phase your homesite is in and which permit-stop conditions sit ahead of it; and the district's most recent audited financial statements.
Get this year's assessment, not last year's zero
A resale tax bill here shows an assessment that no longer exists. The adopted schedule is public and we will get it for your product.
The record
A district that runs a farm shop and an e-bike fleet, and a board the developer fills
Read the adopted budget and this district looks nothing like the usual one. Alongside lake maintenance and street lighting sit an e-bike operation at $60,000 a year, maintenance of a community building at $300,000, a retail farm shop with its own management fees, staffing, cleaning and card-processing charges totalling about $162,000 against roughly $84,000 of sales, and a lifestyle programme of about a million dollars covering signature events, movie nights, weekly clubs, fitness classes, a community app, holiday decorations and $25,000 of fireworks. There is even a line allowing four resident groups $250 each to start a club.
None of that is improper and much of it is genuinely nice to live with. But be clear what it is: a public special district running a retail shop at a budgeted loss of about $78,000, funded by your assessment. You pay for the shop in the assessment and again when you buy the produce. And roughly $288,000 of the maintenance budget goes to invasive species control and trail upkeep in the preserves, which is the real cost of the seventy per cent open space.
On governance, the district's own audited financial statements say the part that matters: all five members of the board of supervisors are affiliated with the developer. The same audit records that the district reimbursed that affiliate roughly $21.9 million for infrastructure in a single year, that the developer funds the district's general operations, and that the district's activity is dependent upon the continued involvement of the developer, the loss of which could have a material adverse effect. That is the auditor's language, not ours, and it is normal for a district this young. It is also worth knowing that the same company is your master developer, your homebuilder, the landowner, and the entity controlling the board that sets your assessment and awards the contracts.
On what you are actually buying into, the entitlement is unusually generous and it is binding. At least seventy per cent of the site stays open. At least 320 acres of public recreation land is committed at buildout, delivered proportionally as each phase's homes complete, of which at least 22 acres must be active recreation. Between 102 and 171 acres are reserved for school sites. All wetlands and their buffers are preserved, and at least a quarter of the native upland habitat. County staff confirmed several of those figures exceed what the code requires.
And the phasing has teeth. A series of conditions each say that no further building permits issue until the work is complete: three public trailheads before the 25th home; perpetual easements recorded over the open space before the 50th; a parks master plan before the 150th; at least one multi-purpose field before the 300th, which the agreement itself calls temporary, to be replaced when permanent fields are built; design of a new avenue extension before the 350th; and the Environmental Parcel conveyance before the 700th. Worth knowing that the master developer is also obliged to maintain streetlights, street trees, landscaping and open swales in perpetuity on all roadways, including public ones. The county keeps the pavement and the signals; everything green stays a private cost, and private costs end up in your assessment.
What to ask for that is not published: who operates the farm and whether residents have any right of access or produce; how often the preserves are burned; whether any school site has actually been conveyed; the recorded amendment to the development agreement; the district's assessment methodology report; and whether any board seat has yet passed to a resident election.
The area
Outside every evacuation zone, and the road out is unfunded and revocable
Start with the clean positives, because there are two and they are verified. This site is outside every Florida storm-surge evacuation zone. We queried the state's own evacuation layer at an address inside the community and it returned nothing, then ran a control point in eastern Martin County which correctly returned a Zone A, so the layer works and the negative is real. And on flooding, the same address returns Zone X, the five-hundred-year shaded band, outside the special flood hazard area with no base flood elevation, meaning no federal requirement to buy flood insurance on a federally backed mortgage. Across a wider sample almost every polygon is Zone X, with the higher-risk mapping confined to the canal corridor. We could not clip these to the exact parcel boundary because the county's mapping server refused connections, so treat them as sampled at an address inside the community rather than measured across it.
On schools, we are not going to publish a zoned assignment and you should be wary of anyone who does. The county school district publishes no public attendance-zone mapping service and no address lookup, so any school list you see for this community came from an aggregator. What we can verify is better anyway: an existing elementary school fronts the community's own spine road, and the county commission agendized a discussion of a school zone there in early 2026. Also worth knowing that school concurrency here was deferred to final site plan rather than settled at approval, and that between 102 and 171 acres are reserved inside the community for school sites, though we found no document showing a site conveyed yet.
On roads, separate what is built from what is promised. Built and funded: the state road serving the community was widened from a rural two-lane to a four-lane divided urban road over about a mile and an eighth, at roughly $21.3 million, with bike lanes and sidewalks both sides. Developer-obligated and enforced by permit stops: interim improvements to the spine road including two roundabouts within three years of the first site plan, two further roundabouts on rolling triggers, and a new avenue extension.
What is not funded is the part to understand. The four-laning of the community's own spine road appears in the development agreement only as an improvement priority, and the agreement says plainly that changed conditions may result in the county determining any or all of those improvements are unnecessary, should be postponed, or are no longer financially feasible, with the county holding ultimate authority over how the impact fees get spent. So the widening of your main road out is both unfunded and expressly revocable. We could not verify any programmed interstate or turnpike capacity project serving this site, so we are not asserting one.
On insurance, be ready for the number. The state regulator puts the average Martin County homeowners premium at about $5,899 including wind and about $2,471 excluding wind, measured in March 2026. That is high by Florida standards, well above the counties to the north, and it is a countywide average blending older coastal stock with new inland construction built to current code. A new home this far inland, outside the evacuation zones and outside the special flood hazard area, should price better than the average. Get a bindable quote on the specific address before your financing contingency expires.
Finally, resale, and here the news is genuinely good and it comes straight from the comprehensive plan. The land use category that made this community possible applies solely to this property by its own words. The category the county created afterwards for large rural parcels caps density at one home per five acres. So whatever gets approved next in western Martin County will almost certainly be a far lower-density product, and nothing else can be built the way this was. That is a scarcity argument sourced entirely to public policy rather than to a sales office. We could not verify competing entitled supply counts in the county and will not invent them.
What you need to know
Buying new construction with someone on your side
Representation is free and the timing is the catch, as above. It matters more than usual here for one structural reason: there is only one builder. On a multi-builder master plan you can price the same homesite against three companies. Here you cannot, so your comparison has to come from outside the gates, and that is exactly the work an agent who is not paid by the seller can do for you.
On the builder, fairly and in both directions. Mattamy Homes is a large, long-established homebuilder, and here it is also the master developer and the landowner. That concentration cuts both ways: there is one accountable counterparty and no builder-blames-developer gap, which is a real advantage when something goes wrong. It also means no price competition inside the community and, as the district's own audit discloses, the same company is affiliated with every seat on the board that sets your assessment.
Two things we will not claim. The company is privately held, so there are no public filings to review and anyone quoting its financials to you is guessing. And we did not search Florida regulatory enforcement or civil dockets for this builder, so read the absence of any such note here as unchecked, not clean. If that matters to you, ask us and we will have someone pull it properly rather than repeat a rumour.
The rest is the same everywhere and it is not complicated: hire your own independent inspector at pre-drywall, again at final walkthrough, and once more before the one-year warranty expires. Read the limited warranty booklet before you sign rather than after. And read what the purchase agreement says about completion timing, price changes before closing, and dispute resolution.
Subdiview is not affiliated with, endorsed by, or sponsored by Mattamy Homes, any homebuilder, any developer of Newfield, the City of Palm City, or Martin County. The builder and developer are identified here because they are the builder and developer of this community, which is a statement of fact and not a representation of any relationship. Community names and marks are the property of their respective owners and are used for identification only. Subdiview is operated by a real estate broker licensed in Illinois. We are not your agent, we do not represent you, and we perform no real estate brokerage services in this state. No one at Subdiview is licensed in this state. If you join an interest list, your information is referred to a real estate professional licensed in the state where the property is located, who will contact you directly. We are compensated by that professional's brokerage, not by you. Pricing, plans, inventory, district, tax and approval details on this page carry the dates shown, are as published, proposed or reported rather than committed, and are subject to change without notice.
Questions and answers
Newfield FAQ
What is Newfield?
It is a large master-planned community on about 3,411 acres in unincorporated Martin County, west of the turnpike, with a Palm City mailing address. It is approved for a maximum of 4,200 homes built out over about thirty years, with at least seventy per cent of the land held as open space, at least 320 acres of public recreation land, and roughly 120 acres of working agriculture as a binding minimum. Mattamy Homes is both the master developer and the only homebuilder we could verify here. Homes are selling and people already live there. The community district currently assesses 1,588 residential units, so it is roughly a third of the way to its cap.
How did a community this big get approved in Martin County?
Not the way most people assume, and the usual telling is wrong. Martin County really does hold new residential development to four storeys, and that limit was not waived here. The community's own policy restates it: development is limited to a maximum of four storeys or forty feet. What actually happened is more unusual. The county created a bespoke future land use category that by its own words applies solely to this one property, and that category switches off three countywide rules: the density cap, the requirement to separate homes from non-residential uses, and the density transition requirement. A separate countywide objective protecting residential areas from encroachment by incompatible development was amended to say it does not apply here. And the same ordinance redrew the county's primary urban service district boundary to bring the neighbourhoods inside it. So it was not a variance. It was a land use category written for one property, plus a boundary redraw, adopted the same day as the rezoning.
What happened to the water treatment marsh?
It was replaced, and it is worth understanding because it was one of the four public benefits used to justify creating this land use category in the first place. The comprehensive plan requires development here to enhance water quality in the river and lagoon by temporarily retaining and naturally cleaning canal water before it discharges. The original 2020 development agreement implemented that: the master developer was to design, permit and construct a stormwater treatment area on about 125 acres, and the agreement expressly allowed recreational use of it. An amendment to that agreement approved in July 2026 strikes that language and substitutes an obligation to identify 125 acres for the county to use for environmental purposes including the placement, storage, grading and management of excavated materials such as muck, soils and sediments. The land must be conveyed to the county before a building permit issues for the 700th home. We verified the approved redline and the vote from the county's own legislative record rather than the recorded instrument, and no county document states the volume, source, duration or exact location of the material. Ask the sales office what is planned for that parcel.
What does the community district cost?
This year, for the first time, something. Last year's adopted budget shows operating assessments of zero and debt assessments of zero: the whole district was funded by a developer contribution, with a note calculating an annual operating cost of about $79 per unit. This year every product pays about $1,194 in operations, plus debt service ranging from about $500 on the multi-family and town-centre products to about $1,990 on a sixty-foot homesite. All in, most single-family products land between roughly $2,944 and $3,184 a year, with townhomes near $2,444 and the town-centre and multi-family products near $1,694. The split across the district is close to fifty-fifty operations and debt. One bond series has been issued, maturing in 2056, and the district's audited statements estimate the total infrastructure needed at roughly $255 million, so most of the borrowing has not happened yet. Ask for the current schedule for your specific product and for the district's audited statements.
Is the farm real, and can I use it?
The farm is real and it is binding. The comprehensive plan requires agriculture on a minimum of five per cent of the open space, which works out at roughly 120 acres, and requires the development to maintain agricultural uses and foster farm-to-table opportunities. What is not established anywhere in the record is who operates it, whether residents have any right of access, whether they have any right to produce, or whether it must continue once the entitlement thresholds are met. Marketing describes a larger farm than the plan requires, and we could not find an instrument behind the difference. In practice what residents get are subscriptions rather than rights: a crop-share programme, garden plots, a farm stand and a retail farm building. Worth knowing that the retail operation is funded through your district assessment and budgeted to lose about $78,000 this year, so you pay for it in the assessment and again at the till.
What are the preserves like to live next to?
Unusually open, and actively managed. The preserve management plan for the first area, about 452 acres, is explicit that unlike many established preserves in the county this one will be accessible to the general public through the trail system, with trailheads from public rights of way and trails for hiking, off-road cycling and horseback riding. That is a genuine amenity and also means people who do not live here will be on those trails. The same plan requires exotic species removal, hydrologic restoration, gopher tortoise management by a licensed agent, monthly monitoring during construction and annual reporting, and it expressly contemplates prescribed burns conducted by a certified burn manager under county approval. No burn frequency is stated anywhere, so ask. And note the development agreement requires application to establish a gopher tortoise receiver bank inside the project, which means tortoises are relocated into this community from elsewhere.
Before you walk into a sales office
Get your inside track on Newfield
We will connect you with a real estate professional licensed in Florida who represents you rather than the seller, who can register you before your first visit, and who will get you the answers this page could not: the current-year assessment for your exact product, what is planned for the 125-acre parcel going to the county, what the operating assessment looks like once the developer stops funding half the lifestyle budget, your zoned schools from the district itself, and which incentives are genuinely available.
It costs nothing, creates no brokerage relationship by itself, and does not obligate you to anything.