Company: LEN
Filing Date: 2025-05-13
Form Type: 424B5
Source: 0001193125-25-118869
Chunk: 1

Company: LENNAR CORP /NEW/
Filing Date: 2025-05-13
Form: 424B5
Chunk 1
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 “Risk Factors” in our Annual Report on Form 10-Kfor the fiscal year ended November 30, 2024.

|                                            |     | Per     
 Note(1) |        |   |     | Total |             |
|:-------------------------------------------|:----|:--------|-------:|:--|:----|:------|------------:|
| Public Offering Price                      |     |         | 99.969 | % |     | $     | 699,783,000 |
| Underwriting Discount                      |     |         |  0.600 | % |     | $     |   4,200,000 |
| Proceeds to Us (before estimated expenses) |     |         | 99.369 | % |     | $     | 695,583,000 |

| (1) | Plus accrued interest, if any, from May 19, 2025, if settlement occurs after that date. |

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved these securities or determined whether this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense. The Notes will be ready for delivery in book-entry form only through The Depository Trust Company for the accounts of its participants, including Euroclear Bank, SA/NV and Clearstream Banking, S.A., on or about May 19, 2025. Joint Book-Running Managers

| BofA Securities |     | Goldman Sachs & Co. LLC |     | J.P. Morgan |     | Mizuho                   |     | Wells Fargo Securities |
| BBVA            |     | BMO Capital Markets     |     | Citigroup   |     | Citizens Capital Markets |     | Truist Securities      |

| Huntington Capital Markets |     | PNC Capital Markets LLC |     | Scotiabank |     | TD Securities |

Co-Managers

| Fifth Third Securities |     | Regions Securities LLC |     | Comerica Securities |     | Zions Capital Markets |

The date of this prospectus supplement is May 12, 2025.

We are responsible for the information contained and incorporated by reference in this prospectus supplement and the accompanying prospectus or that in contained in any free writing prospectus prepared by us or on our behalf. We have not, and the underwriters have not, authorized anyone to give you any other information, and we take no responsibility for any other information that others may give you. Neither we nor the under