3516 21ST AVENUE S
ActiveSt Petersburg, FL 33711
NEW 2026 BUILD! Welcome home to this luxury estate featuring 4 bedrooms plus an office, 2.5 baths, and a detached 2-bedroom, 1-bath guest house, all situated on an expansive third-of-an-acre lot designed to provide privacy between both residences. Built by McDew Development, this unique property offers luxury living, exceptional flexibility, and income-producing potential in one of St. Petersburg’s fastest-growing areas. The striking modern exterior showcases custom white stucco, dark architectural accents, and black impact-rated windows and doors. A welcoming front porch leads to an open-concept interior featuring soaring ceilings, luxury vinyl plank flooring, wide baseboards, recessed lighting, and designer finishes throughout. Expansive sliders open to a private, fully fenced backyard with ample room for a resort-style pool. At the heart of the home, the chef’s kitchen features a waterfall island, floor-to-ceiling two-tone wood cabinetry, quartz countertops, built-in cooktop, wall oven, wall microwave, counter-depth refrigerator, and a spacious walk-in pantry with additional storage and prep space. The first-floor primary suite offers custom walk-in closets and a spa-inspired bath with a soaking tub, oversized shower, floating double vanity, and private water closet. A dedicated office completes the main level. Upstairs, three additional bedrooms surround a spacious loft-style great room with a wet bar, ideal for entertaining or relaxing. Adding tremendous value is the detached 800 SF ADU, complete with 2 bedrooms, 1 bath, a full kitchen, living area, laundry, and private balcony. Whether used for rental income, multigenerational living, or extended guests, this fully self-contained residence provides versatility rarely found in new construction. The property is completed by an oversized 3-car garage with alley access and is conveniently located minutes from Downtown St. Petersburg, the St. Pete Pier, Gulfport, Tropicana Field, and I-275. Situated outside a flood zone and custom built in 2026, this is a rare opportunity to own a private modern luxury retreat with both lifestyle and investment appeal.

1/20
3516 21ST AVENUE S
$1,250,000
- 4 bedrooms
- 2 baths
- 3345 sq ft
- MLS# : TB8516916
- Built in 2026
Nearby schools
- Pinellas County School District
Actual schools may vary. We recommend verifying with the local school district, the school assignment and enrollment process.
Map & directions
Mortgage rates & offers
Contact
FPO
eXp Realty LLC
Copyright © 2026 Stellar MLS. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Discover More Great Communities
Select additional listings for more information
By providing your name and contact information and clicking the I'm Interested! button, you consent and agree to receive marketing communications from NewHomeSource and the builder(s) selected above, including emails, calls or text messages using an automatic telephone dialing system or an artificial or prerecorded voice. Your agreement is not a condition to purchasing any property, goods or services, and you may call us instead of submitting the information online. You also acknowledge and agree that you can revoke your authorization at any time. Your consent herein also applies to any future registration on national or state Do-No-Call lists. For mobile phones, standard message and data charges apply. Consult our Privacy Policy for additional information, including unsubscribe options. You also agree to our Privacy Policy, including TCPA Policy and Terms of Use.
Way to Go!
An agent will be in contact soon!