Rule 506 of Regulation D, in Plain English

Where Rule 506 sits in the rulebook

Start at the top. The Securities Act requires that every offer and sale of securities in the U.S. either be registered with the SEC or fit within an exemption — and the interests you sell in a syndication or fund are securities. Registration is the IPO process: wildly impractical for a $5M apartment deal. So private offerings live or die on exemptions.

Regulation D is the SEC's set of rules carving out safe harbors from registration, and Rule 506 is its workhorse: a safe harbor under the Securities Act's private-offering exemption. "Safe harbor" is the key phrase — instead of arguing facts and circumstances about whether your raise was truly "private," you follow Rule 506's defined conditions and the exemption is yours with certainty. By most accounts, the large majority of capital raised under Regulation D flows through Rule 506, which is why sponsors, attorneys, and investor portals all speak its language.

What Rule 506 gets you

Sponsors gravitate to Rule 506 because it removes the two constraints that make other exemptions awkward for real estate:

• No offering size limit. Rule 506 has no cap — the same exemption covers a $2M duplex portfolio raise and a $200M fund. You never outgrow it.
• Federal preemption of state registration. Securities sold under Rule 506 are "covered securities," so individual states can't impose their own registration or merit review. States are limited to notice filings and fees (more on those below).
• Unlimited accredited investors. There's no ceiling on how many accredited investors can participate.
• Safe-harbor certainty. Bright-line conditions instead of case-by-case legal argument — which is exactly what you want when millions of dollars and personal liability are on the line.

Without preemption, a sponsor with investors in eight states would face eight different state registration regimes. Under Rule 506, it's one federal rulebook plus a stack of notice filings — a difference measured in months and tens of thousands of dollars.

The two doors: 506(b) and 506(c)

Rule 506 isn't one set of conditions — it's two alternative paths, and the choice between them defines how you're allowed to find investors. 506(b) prohibits general solicitation but allows self-certification and up to 35 sophisticated non-accredited investors. 506(c) permits public advertising but restricts the offering to accredited investors whose status you must reasonably verify.

Everything else about Rule 506 — the unlimited raise size, the preemption, the filings — is identical between the two. The fork is purely about marketing and investor eligibility, and it deserves its own analysis; we break the trade-offs down fully in our 506(c) vs 506(b) comparison.

How sponsors choose in practice

On paper the choice looks legal; in practice it's a marketing-capacity question. A 506(b) raise can only be filled by people you already have a substantive relationship with — so its real ceiling is the size of your network. That works beautifully for a first deal funded by colleagues, family, and a few country-club connections. It stops working the moment your deal size outgrows your rolodex, which for most sponsors happens somewhere around deal two or three.

506(c) trades verification friction for unlimited reach: ads, content, webinars, and PR can all legally put your offering in front of strangers. The sponsors who get hurt are the ones who never consciously choose — they file as 506(b), quietly market like a 506(c), and put the entire exemption at risk. The honest sequence is: project where the capital is actually coming from, then pick the door that makes that plan legal.

Who counts as an accredited investor

Both doors lean on the accredited investor definition, so it's worth having cold. For individuals, the common tests are:

• Income: $200,000 in each of the two most recent years ($300,000 jointly with a spouse or spousal equivalent), with a reasonable expectation of the same this year.
• Net worth: over $1 million, alone or jointly, excluding the value of the primary residence.
• Professional credentials: holders of certain securities licenses qualify regardless of income or net worth.
• Entities: various entities — funds, trusts, and companies meeting asset or ownership tests — qualify under separate rules.

The definition is the same under both paths; what differs is the proof. Under 506(b), investors self-certify, typically via a questionnaire in the subscription documents. Under 506(c), you must take reasonable steps to verify — income documents, asset statements, or a confirmation letter from the investor's CPA, attorney, broker-dealer, or registered adviser.

The obligations that survive the exemption

"Exempt" never means "unregulated." Whichever door you choose, a short list of obligations always travels with a Rule 506 offering:

• Form D — a notice filing with the SEC due within 15 days of the first sale. It's not an approval process, but skipping it is an unforced error regulators notice.
• Blue-sky notice filings — most states where your investors live require their own notice filing and fee. Preemption killed state registration, not state paperwork.
• Anti-fraud rules — these apply to every offering, registered or exempt. Rule 506 exempts you from registration, never from telling the truth in your deck, your webinar, or your PPM.
• Bad-actor disqualification — Rule 506 generally becomes unavailable if the issuer or certain covered persons have specified securities-law violations in their past, which is why counsel runs background questionnaires on the whole sponsor team.

None of this is exotic, but all of it is easy to fumble while you're also closing a property. Engage securities counsel before the raise opens — the filings, the disclosure document, and the exemption choice are one integrated decision, not three separate chores.