Mariana Niro

Mariana Niro is a real estate agent with Serhant in Coconut Grove. MLS records credit Mariana with 7 transactions over the last 12 months, worth $12.3 million in total sales volume. Across both sides of the deal, that is an average of $1,750,714 per transaction.

4 of those transactions were on the listing side, representing sellers, for $8.4 million. The other 3 were on the selling side, representing buyers, for $3.9 million. The split is close to even, so Mariana works for both sellers and buyers.

The average price differs by side: $2,097,500 for listings and $1,288,333 for buyer-side sales.

By sales volume, Mariana ranks 4th of the 165 agents in Key Biscayne with recorded sales, ahead of 98 percent of them. The typical agent there closed 1 transaction worth $1.7 million, so Mariana's volume is about 7.3 times the local median.

Statewide, Mariana is 2429th by volume among 75,943 Florida agents with recorded sales.

In ZIP code 33149, the address on Mariana's MLS record, the median sold price was $1,230,000 across 33 sales between July 2026 and August 2026. Mariana's average transaction of $1,750,714 is about 1.4 times that median, which points to higher-priced homes than the ZIP code as a whole.

Mariana is listed with Serhant, Coconut Grove. Other agents on the same office record, busiest first:

• Angel Nicolas5 transactions · 28.4M volume
• Maria Alejandra Alfonzo3 transactions · 19.5M volume
• Scott Porter1 transaction · 10.5M volume
• Kefryn Reese7 transactions · 7.7M volume
• Alvaro Garcia4 transactions · 6.5M volume
• Jorge Fernandez7 transactions · 6.3M volume

These other Key Biscayne agents also have recorded sales in the last 12 months. They are ranked by sales volume. Compare a few before you pick someone to interview.

• Dolores Urdapilleta15.5 transactions · 55.7M volume
• Giulietta Ulloa13 transactions · 44.8M volume
• Geysa Guarconi2 transactions · 13M volume
• Claudine Coto4 transactions · 12M volume
• Maureen Jauregui5 transactions · 11.3M volume
• Cristina Marquez2 transactions · 10.8M volume

The numbers on this page come from public MLS and license records, last updated May 2026. Transaction counts and dollar volumes cover the last 12 months and are credited to the agent named on each record. Mariana has not claimed this profile, and a listing here does not mean Mariana or Serhant endorses or is affiliated with Expert Agents Near Me. We collect no reviews, so there are no ratings from us on this page.