A Seller’s Guide to the MLS in NJ
If you’ve ever sat across from your listing agent and asked, “Why can’t we just say it’s a great room for a nursery?” — you’re not alone. Every week, sellers push back on the way their home gets described in the MLS, and most of the time the answer isn’t that we don’t want to write it the way you’d write it. It’s that we legally can’t, the system literally won’t let us, or the rules of the MLS we belong to specifically prohibit it.
The MLS is not a marketing platform we control. It’s a regulated database governed by federal fair housing law, state real estate commission rules, and the bylaws of the individual MLS organizations we belong to. Understanding what those rules actually say — and why they exist — makes the listing process dramatically smoother, and it usually leads to a better-performing listing too. This guide walks through what the MLS is, what it isn’t, and the rules every seller should understand before their home goes live.
The five things every seller should know before going live:
1. The MLS is a regulated database with federal fair housing rules baked into it — agents face fines, license action, and lawsuits for violations.
2. Each MLS has a strict character limit for public remarks. GSMLS allows 1,500 characters. NJMLS allows 800. MoreMLS goes all the way to 10,000. The same description has to work within all of them — and that’s by design.
3. Most property features are selected from a fixed menu of dropdowns and checkboxes, not written out in prose. We’re not editing those because the system literally won’t accept anything else.
4. Geographic coverage is determined by where your home is located, not by where you’d like it marketed. We can list in multiple MLS systems where eligible, but we can’t fabricate a town or school district.
5. Photo rules exist. We can’t remove neighbors’ homes from images, and we can’t stage your kitchen with a “perfect” view by photoshopping out a power line.
🏛️ What the MLS Actually Is
Not Zillow
MLS stands for Multiple Listing Service. It’s a cooperative database where licensed real estate brokers share information about properties for sale, including the offer of compensation to a cooperating broker who brings the buyer. Every major listing site you’ve ever scrolled — Zillow, Realtor.com, Redfin, Homes.com — pulls its data from the MLS. The MLS is the source. Public sites are the downstream.
What this means in practical terms: when we list your home, we enter the data into the MLS once, and that data syndicates to hundreds of public-facing sites within hours. We don’t write a custom description for Zillow and a different one for Realtor.com. There’s one set of public remarks, one set of photos, one set of feature selections — and they go everywhere.
New Jersey has multiple MLS organizations, each covering different geographic regions, and each with its own rules. The Michael Martinetti Group is a member of six: GSMLS, NJMLS, MoreMLS, ALLJersey MLS, Hudson MLS, and Bright MLS. That coverage lets us list your home in every relevant database for maximum buyer exposure — but it also means we’re bound by six sets of rules, not one.
⚖️ Why Certain Words Are Off Limits
Federal Law
This is the part sellers push back on most often, so let’s be direct about it. The Fair Housing Act of 1968 prohibits any advertisement for the sale or rental of housing that indicates a preference, limitation, or discrimination based on race, color, religion, sex, national origin, familial status, or disability. New Jersey’s Law Against Discrimination adds even more protected classes, including marital status, sexual orientation, gender identity, source of lawful income, and several others.
That law applies to MLS listings. It applies to social media posts. It applies to flyers, postcards, and the description on your “For Sale” sign. It applies to anyone involved in publishing the advertisement — the listing agent, the brokerage, the MLS itself, and the syndication sites.
The standard isn’t intent. It’s interpretation. A fair housing complaint doesn’t require us to have meant anything discriminatory. It only requires that a reasonable person could interpret the language as expressing a preference for or against a protected class. That’s why so much innocent-sounding language is flagged.
Words That Will Get Flagged
“Nursery” or “playroom”: Implies a preference for buyers with children, which is a familial status issue. Describe the room by what it is — fourth bedroom, bonus room, flex space.
“Master bedroom”: Largely phased out across the industry due to the term’s historical connotations. The current standard is primary bedroom. Many MLS systems no longer have “Master” as a dropdown option.
“Family room”: Some MLS systems still allow it as a feature selection, but many fair housing reviewers now flag the term in public remarks because it implies a preference for traditional family structures. Great room, living room, den, or bonus room are the safer choices.
“Walk to” or “walking distance”: Considered discriminatory toward buyers with mobility disabilities. Use actual distances: “0.4 miles from the train station” instead of “walking distance to the train.”
“Walk-in closet”: This one’s evolving. The federal guidance has historically said walk-in closet is acceptable because it describes the closet, not a buyer requirement. But several MLS systems and brokerages (including ours) have started flagging or restricting the term as the language standard tightens. When in doubt, we’ll write large closet or oversized closet.
“Great schools” or “good schools”: Subjective and considered steering. We can name the school district. We can link to publicly available data. We cannot characterize the schools as “great.”
“Safe neighborhood” or “quiet street”: “Safe” implies the opposite about other neighborhoods, which is steering. “Quiet” can be interpreted as a coded preference. We describe the property, not the population.
“Exclusive,” “restricted,” “private,” “cul-de-sac,” “golf club”: All have historical associations with discriminatory covenants. Avoided in modern listings.
You get the jist. This is just a small sample of restricted terminology. The honest caveat: Different MLS systems flag different words. Something that’s fine in NJMLS public remarks may get auto-rejected by Bright MLS. Something that passes the system’s automated filter may still get flagged by a fair housing compliance officer in a manual review. We err on the side of caution because the consequences of getting it wrong are real: fines start at several thousand dollars per violation, and HUD complaints can lead to license action against your listing agent.
📏 Character Limits Are Real (and Tight)
Hard Cap
Every MLS sets a maximum length for the public remarks section — the prose description of your home that buyers actually read. We cannot exceed those limits. The system simply won’t accept the listing.
Here’s what New Jersey looks like across the major MLS systems we work in, sorted from tightest to most generous:
| MLS | Public Remarks Limit | What That Buys You |
|---|---|---|
| NJMLS | 800 characters | About 130-150 words |
| GSMLS (Garden State) | 1,500 characters | About 240-270 words |
| ALLJersey MLS (formerly CJMLS) | 3,000 characters | About 480-540 words |
| Hudson MLS | 4,000 characters | About 640-720 words |
| MoreMLS (formerly Monmouth/Flex) | 10,000 characters | About 1,600-1,800 words |
NJMLS
800 characters — about 130-150 words
GSMLS (Garden State)
1,500 characters — about 240-270 words
ALLJersey MLS (formerly CJMLS)
3,000 characters — about 480-540 words
Hudson MLS
4,000 characters — about 640-720 words
MoreMLS (formerly Monmouth/Flex)
10,000 characters — about 1,600-1,800 words
Those numbers include spaces and punctuation. And while the spread looks generous on the high end — MoreMLS at 10,000 characters can hold a full magazine article — the listing description has to work across all the MLS systems where the home is published. If your property is going into both NJMLS and GSMLS, the description has to fit within NJMLS’s 800-character limit, not GSMLS’s 1,500. The tightest limit always wins.
The longer character allowances also don’t mean longer is better. Buyer behavior research consistently shows that long listing descriptions get skimmed, not read. The first sentence does most of the work. By the third sentence, attention drops sharply. A 10,000-character description on MoreMLS doesn’t perform better than a tight 300-character one — it just gives sellers more rope.
A well-written listing description tells the buyer three things: the most important standout feature of the home, the layout in broad strokes, and the one or two location details that matter. That’s it. The character limit isn’t usually the constraint that bites — discipline is.
🎛️ Features Come From a Menu, Not a Sentence
Checkboxes
The vast majority of a listing’s content isn’t prose — it’s data fields. Number of bedrooms, number of bathrooms, square footage, lot size, year built, heating type, cooling type, basement details, garage type, exterior features, interior features, appliances included, school district, taxes. All of it gets entered through dropdowns and checkboxes.
If your kitchen has quartz countertops, we select “Quartz” from the countertop dropdown. We don’t write “stunning quartz countertops imported from Italy” in the remarks because (a) the system already shows quartz on the property data page where every buyer is looking, and (b) flowery prose burns characters we don’t have to spare.
The same applies to nearly every feature. If your home has hardwood floors, central air, a finished basement, a gas fireplace, or a primary suite on the first floor — those are all checkbox selections. The buyer sees them as structured data, in the same format as every other listing they’re comparing.
Why This System Exists
Standardized data fields exist so buyers can search and filter. A buyer who needs a first-floor bedroom for an aging parent can filter the entire MLS by that feature. A buyer who wants a fenced yard can filter by that. None of those filters work if the information is buried in a sentence in the public remarks.
When we select features from dropdowns, your home appears in every relevant search. When sellers insist on writing features into the remarks instead, the home is harder to find and the listing looks amateur.
If a feature doesn’t have a checkbox — say, your home has a custom-built ham radio room — that’s where the public remarks come in. But for the 95% of features that do have a dropdown, the dropdown is where they go.
📍 Geographic Coverage Is Determined by Address
School Districts
This one comes up most often with sellers near a town border. “We’re technically in Scotch Plains but everyone considers us part of Westfield” — we hear it constantly. And the answer is the same every time: the MLS requires the municipality and ZIP code that match the official tax record. We cannot list a Scotch Plains home as Westfield, even if the post office delivers mail to a Westfield address.
The same applies to school districts. If your home falls within the Linden school district by tax assessment, we have to list it as Linden, even if the neighbors’ kids go to Cranford because of a sending-receiving arrangement or a magnet school selection. The MLS records the official assignment, not the option that might be available to some students.
What we can do is list your home in multiple MLS systems where the property is eligible. A home in Union County typically appears in GSMLS and Bright MLS. A home along the Hudson waterfront might appear in NJMLS and Hudson MLS. Each MLS has its own coverage area, and we maximize where we list based on what’s allowed — not based on where we’d prefer the buyer pool to come from.
📸 Photo Rules: What We Can and Can’t Edit
Truth in Advertising
Photos are where some of the more unusual seller requests come in. We’ve had sellers ask us to:
What We Get Asked — and What We Can Actually Do
“Remove the neighbors’ houses from the photos.” No. The neighboring homes are a permanent feature of your property’s setting. Buyers will see them on Google Street View, on Zillow’s satellite layer, and at the showing. Removing them creates a misleading visual that triggers fair housing and truth-in-advertising concerns the moment the buyer pulls into the driveway.
“Photoshop a bluer sky into the exteriors.” Some sky enhancement is industry-standard. Replacing a heavily overcast sky with a sunny one is acceptable. Inventing a sunset that never happens on your block is not.
“Edit out the power lines.” Power lines, telephone poles, and similar permanent infrastructure stay. They’re part of the property. Removing them creates a discrepancy between the photos and the in-person experience that can sink a deal during attorney review.
“Remove cars from the driveway.” If the cars are yours or visiting friends’, yes — that’s standard. If a neighbor parks on the street in front of your house, we can sometimes time the shoot to avoid it, but we can’t digitally erase a third party’s vehicle from a public street.
“Show the home with all the leaves on the trees.” Twilight photography, drone shots, and reshoots in different seasons are all options we’ll discuss, but reshoots add cost and listing time. We plan the photo strategy at the listing meeting so this doesn’t become an issue later.
The underlying principle: MLS photos must accurately represent the property. The National Association of REALTORS® Code of Ethics, state real estate commission rules, and most MLS bylaws all reinforce this. Misleading photos are a fast track to a complaint, and they don’t help anyway, because buyers will figure it out at the showing. In sum: Permanent, no. Temporary, perhaps.
🗒️ What Goes Where: Public Remarks vs. Agent Remarks vs. Showing Instructions
Two Sets of Rules
Every MLS listing has at least two separate description fields. Public remarks are what buyers see on Zillow and Realtor.com. Agent remarks (sometimes called private remarks or broker remarks) are visible only to other licensed agents inside the MLS.
The split matters because the rules are different.
Public Remarks
Description of the home for buyers. Subject to fair housing review, character limits, and prohibitions on contact information, lockbox codes, showing instructions, or URLs to non-MLS sites.
Agent Remarks
Information for cooperating agents only. Showing instructions, lockbox details, occupancy status, attorney info, and any negotiation notes that shouldn’t reach the public.
Sellers sometimes ask us to include a phone number or a personal note “for buyers” in the public remarks. We can’t. Contact information in public remarks is a violation of every MLS in New Jersey, because it routes inquiries around the listing brokerage and undermines the cooperative structure the MLS is built on. If a buyer wants to reach us, the MLS routes them to our office through the proper channels.
🧭 What Sellers Actually Control
Our Execution
It’s easy to read all of this and feel like the seller has no input. The opposite is true. Sellers control the things that actually move the needle — and those things are bigger than which words appear in the public remarks.
What You Actually Decide
List price. The single biggest factor in how fast and at what price your home sells. We advise based on comps; you make the final call.
Showing availability. The more accessible your home is, the more buyers see it. Restrictive showing windows reduce the buyer pool.
Staging and presentation. What’s on the counters, what’s on the walls, how the home is lit, what the curb appeal looks like on the day of the photo shoot. That’s all yours.
Pre-list improvements. Paint, decluttering, minor repairs, landscaping. The investments that consistently return more than they cost.
Disclosures. What you tell buyers about the condition of the home, prior issues, and renovations. Accurate disclosures protect you legally; aggressive ones build trust.
Strategy. When to list, whether to host an open house, how to handle multiple offers, whether to accept an offer with home sale contingencies. Every one of those decisions is yours.
🚨 What Happens When the Rules Get Broken
Why We Push Back
When a seller asks us to bend a rule and we say no, this is what we’re protecting against:
The Stack of Consequences
MLS fines. Most New Jersey MLS systems levy fines starting at $100 per violation, escalating to several hundred or thousand dollars for fair housing language, contact information in public remarks, or photo violations.
HUD complaints. Buyers, fair housing testers, and watchdog organizations can file complaints with the U.S. Department of Housing and Urban Development. Investigations can take a year or more and can result in mandatory training, settlements, or referral to the Department of Justice.
New Jersey Real Estate Commission action. The NJREC can suspend or revoke a real estate license for fair housing violations. This is not theoretical — it happens.
Private lawsuits. A buyer who believes they were discriminated against in the advertising can sue under federal and state fair housing laws. Damages, attorney fees, and statutory penalties apply.
NAR Code of Ethics violations. Separate disciplinary process at the local association level, with sanctions ranging from required education to expulsion from REALTOR® status.
None of those land on the seller. They land on the listing agent and the brokerage. So when we redline “nursery” out of your description, we’re not being difficult — we’re protecting our license, your transaction, and the integrity of the listing.
💡 What Makes a Listing Actually Work
What Sells Homes
Once you understand what we can’t say, the question becomes: what works within the constraints?
Lead with the standout feature. When your description is going into NJMLS at 800 characters, the first sentence does the heavy lifting. If your home has a renovated kitchen, that’s the lead. If it has a primary suite on the first floor, that’s the lead. If it backs to a preserved woodland buffer, that’s the lead.
Use specific details, not adjectives. “Renovated kitchen with quartz counters and 36-inch range” beats “stunning gourmet kitchen” every time. Specifics make the listing memorable; adjectives make it forgettable.
Cover the layout in one sentence. “Four bedrooms upstairs, finished basement with full bath, and an attached two-car garage.” Buyers want the spatial picture before they click into the photos.
Let the data fields do the heavy lifting. Year built, square footage, lot size, taxes, school district — all of it shows up on the listing page automatically. You don’t need to repeat it in the remarks.
End with the location detail that matters. Closest train station, distance to a major highway, walking distance — sorry, distance — to the downtown. The single most useful location anchor.
What’s Your Home Actually Worth?
Before you sit down for the listing meeting, get a real estimate of where your home stands in today’s market. Our home valuation tool pulls live comparable sales data from across Union County and surrounding markets.
Prefer to talk? Call us at 1-855-I-SELL-NJ
❓ Frequently Asked Questions
Can we just write our own description and have you paste it in?
You can absolutely give us a draft. We’ll edit it to fit fair housing rules, character limits, and the MLS feature menu — then we’ll send it back for your approval before going live. What we can’t do is paste your draft in verbatim if it contains flagged language or exceeds the character limit. Both of those would get auto-rejected by the MLS anyway.
Why does the same listing look different on Zillow vs. Realtor.com?
Each public site formats the MLS data differently. Some show all the photos; some show only the top 25. Some pull the public remarks in full; some truncate. Some display the school district; some show different schools based on their own data partners. We control what goes into the MLS. We don’t control how each downstream site renders it.
What about staging that’s not in the listing — like virtual staging?
Virtual staging (digitally adding furniture to an empty room) is permitted as long as it’s clearly labeled as virtually staged. Most MLS systems require a “Virtually Staged” disclaimer on the photo. What’s not allowed is digitally altering the structure of the home — moving walls, adding finishes that aren’t there, or changing the floor plan.
Why can’t we include our home’s nickname or our family’s last name in the listing?
The MLS isn’t a personal advertising platform. Seller names, personal stories, and identifying details belong off the listing for both privacy and fair housing reasons — they can inadvertently signal information about the seller that influences buyer behavior in protected ways. Save the family stories for the showing or the closing dinner.
What is the character limit for MLS listings in New Jersey?
Character limits vary by MLS and are set inside each platform’s listing entry screen. As of 2026: NJMLS allows 800 characters, GSMLS allows 1,500, ALLJersey MLS (formerly CJMLS) allows 3,000, Hudson MLS allows 4,000, and MoreMLS (formerly Monmouth/Flex) allows 10,000. When a listing is published in multiple MLS systems, the description has to fit the tightest limit of the group.
What happens if the buyer’s agent finds a fair housing issue after we go live?
Cooperating agents can flag listings to the MLS or to their own brokerage’s compliance officer. The MLS will typically issue a courtesy notice to the listing agent first — the language gets corrected, and if it’s a first offense, that’s usually the end of it. Repeated or egregious violations escalate to fines and disciplinary action.
Can I change the listing description after it goes live?
Yes. We can edit public remarks throughout the listing period. If the listing isn’t getting the traffic we expected, sometimes a description refresh is part of the strategy. What we can’t do is change a property’s underlying data — square footage, lot size, year built — without documentation supporting the change.
Why are some MLS rules different from others?
Each MLS is an independent organization with its own board, bylaws, and rules committee. They all comply with federal fair housing law, but they make their own decisions about character limits, photo requirements, feature menus, and enforcement procedures. That’s why something that’s fine in NJMLS might get flagged in GSMLS, and vice versa.
Thinking About Selling in New Jersey?
The Michael Martinetti Group is the #1 team in Union County, with 2,000+ clients and over $1 billion in sales. We list homes across six MLS systems and we know exactly how to write a listing that performs within the rules.
📚 Related Resources
For sellers preparing to list, our companion guides walk through the attorney review period and what to expect in the first three days after going under contract, along with how property tax assessments affect your sale and pricing strategy.
If you’re researching the local market before listing, our town guides cover Westfield, Scotch Plains, Clark, and Union Township — with current market data, school information, and the same honest editorial approach we bring to listings.
To see how the Union County market is performing right now, our analysis of New Jersey home price growth covers the latest Cotality data and what it means for sellers timing their listing.
The Michael Martinetti Group | Keller Williams Premier Properties · 1 Elm Street, Westfield, NJ 07090 · 1716 E 2nd Street, Scotch Plains, NJ 07076 · 1-855-I-SELL-NJ · Members of GSMLS, NJMLS, MoreMLS, ALLJersey MLS, Hudson MLS, Bright MLS · This guide is for informational purposes only. MLS rules, character limits, and fair housing guidance evolve. Consult your listing agent for current specifications applicable to your property.