Selling FSBO vs. hiring an agent: the commission math

On a $400,000 sale, a traditional 5–6% commission is $20,000–24,000 — often the single largest transaction fee of your life. For Sale By Owner (FSBO) looks like the obvious fix: do the work, keep the money. But the data has an inconvenient wrinkle: FSBO homes have historically sold for meaningfully less than agent-listed homes. The real question isn't 'can I avoid the commission' — it's 'do I keep more money after everything settles.'

What the commission actually buys

• Pricing: agents price from live comps and buyer behavior. Overpricing by 5% and chasing the market down usually costs more than the commission would have.
• MLS exposure: the MLS feeds every major listing site. Off-MLS listings simply reach fewer buyers, and fewer buyers means weaker offers.
• Negotiation and transaction management: offer strategy, inspection-credit fights, appraisal gaps, deadline tracking — places where a 1% mistake is $4,000.
• A liability buffer: disclosure errors are a top source of post-sale lawsuits, and agents handle disclosure paperwork constantly.

The FSBO math, honestly

When FSBO genuinely works

• A hot seller's market where anything listed gets multiple offers within days.
• A standard, easily-priced house — plenty of nearly identical comps within a half mile.
• You already have the buyer: a neighbor, a tenant, a family friend. This is the single best FSBO scenario — consider paying a flat-fee attorney or transaction coordinator $1,500–3,000 to paper it correctly.
• You have time and temperament: showings on demand, blunt feedback, negotiating face-to-face with buyers who know you're saving the commission and want half of it.

The middle paths most sellers skip

The choice isn't binary. Flat-fee MLS services list your home on the MLS for $300–1,000 while you handle the rest. Discount and 1–1.5% listing brokerages do pricing, photos, and paperwork for less than half the traditional fee. And commission has always been negotiable — following the 2024 industry settlement, it explicitly is: listing fees and what you offer a buyer's agent are both line items you can push on, especially on expensive homes where the percentage math gets silly. On an $800,000 house, negotiating the listing side from 2.5% to 2% is $4,000 for one uncomfortable conversation.

If you do sell it yourself

1. Price from data, not hope: pull sold (not listed) comps from the last 90 days, and consider a pre-listing appraisal ($400–600).
2. Pay for professional photos ($150–400) — listings with phone photos read as distressed and get lowball offers.
3. Buy a flat-fee MLS listing so you appear everywhere buyers actually search.
4. Hire a real estate attorney ($800–2,000) for the contract, disclosures, and closing — this is not the place to improvise.
5. Require pre-approval letters before showings, and treat every verbal agreement as vapor until signed.

Net proceeds, three ways

The three-scenario example deserves a proper table. Same $400,000 house; the columns differ only in who does the work and what exposure the listing gets. The middle column is the one most FSBO debates ignore — a flat-fee MLS listing captures most of the exposure for a fraction of the fee, if you can handle pricing and negotiation yourself.

In this rendering the flat-fee middle path nets the most — about $5,400 ahead of the full-service agent — but look at how it gets there: it concedes a little on price for a big fee saving, and it assumes you handle showings, disclosures, and negotiation competently. The pure FSBO nets the least despite paying the least, because off-MLS exposure costs more in price than it saves in fees. Change the assumptions — a hot market shrinks the price gaps, a tricky house widens them — and the winner moves. That's the real lesson: this is a table you fill in for your own house, not a slogan you adopt.

The bottom line

The commission is real money, but so is the price gap between fully-marketed and under-marketed homes. FSBO wins when the market is hot, the house is ordinary, or the buyer is already found — especially with a flat-fee MLS listing and an attorney backing you up. A good agent wins when pricing is tricky or the market is soft, and a negotiated or discounted fee beats both extremes more often than either camp admits. Run the net-proceeds math on all three paths before you plant a sign.