Sold
305 Diamond Avenue sold on May 20, 2013 for $2,375,000, 0.8% below the $2,395,000 asking price after 47 days on the market. The details are below for reference.
305 Diamond Avenue, Newport Beach, CA 92662
- 5 beds
- 5 baths
- 2,575 sq ft
- 2,550 sq ft lot
- Built 1993
Own 305 Diamond Avenue? Request a free home valuation to see what it is worth today.
$2,375,000
Subdivision Balboa Island - Main Island
22 single-family homes sold in the past 12 months · median $5,187,500
The home
About 305 Diamond Avenue
Charming Balboa Island single family home or awesome duplex. You decide. This is a 5 bedroom, 4.5 bath single family home OR it can be used as a duplex. This home is unique because the front and the back houses are connected by an internal corridor which makes it one big residence or you can close off the back unit and it becomes a completely separate apartment.
If used as a duplex, the front home consists of 3 bedrooms (one on the main floor) and 3 bathrooms; the back house includes a 2 bedroom (plus loft), 1.5 bath apartment with a separate entry.Other features include a master suite retreat, a separate guest suite, a sought after "Island" front patio and a fabulous roof top deck (with views). There is an attached 2 car garage as well as tandem parking for 2 small vehicles on the side of the house.
If you are looking for a full time residence, a weekend escape home, or a potential income producing property, look no further!
Property details for 305 Diamond Avenue
This 5-bedroom, 5-bath single-family home sits in the Balboa Island - Main Island neighborhood of Newport Beach in Orange County. It has 2,575 square feet of living space on a 2,550-square-foot lot. The home was built in 1993. The MLS record lists the assessor parcel number as 050-082-14. Highlights include city lights views, a fireplace, an attached two-car garage, and Cape Cod architecture.
Specifications
Home Details
General Features
- Property Type
- Single Family Residence
- MLS Number
- NP13039804
- Year Built
- 1993
- Builder
- Balboa Island-mail island
- Living Area (sq ft)
- 2,575
- Living Area Source
- Appraiser
- Lot Size (sq ft)
- 2,550
- Lot Size (acres)
- 0.059
- Levels
- Two
- Bedrooms
- 5
- Full Baths
- 1
- Half Baths
- 1
- Garage Spaces
- 2
- Parking Spaces
- 4
- View
- City Lights, Neighborhood
- Parcel Number
- 05008214
- On Market Date
- 2013-03-06
- Listing Terms
- Standard
Interior Features
- Interior Features
- Beamed Ceilings, Wet Bar, Breakfast Bar, Ceiling Fans, Ceramic Counters, Cathedral Ceilings, Granite Counters, Recessed Lighting, Bedroom On Main Level, Primary Suite, Walk In Closets
- Appliances
- Dishwasher, Gas Range, Microwave, Refrigerator
- Flooring
- Carpet, Tile, Wood
- Heating
- Forced Air
- Cooling
- None
- Fireplace
- Guest Accommodations, Living Room, Primary Bedroom
- Laundry
- Inside
- Common Walls
- No Common Walls
- Windows
- Double Pane Windows, Drapes, Garden Windows, Skylights
- Accessibility
- Safe Emergency Egress From Home, Grab Bars, Low Pile Carpet
Exterior Features
- Architectural Style
- Cape Cod
- Roof
- Slate
- Foundation
- Slab
- Lot Features
- Sprinklers In Front
- Patio and Porch
- Front Porch, Patio, Porch, Rooftop, Stone
- Parking
- Direct Access, Door Single, Garage
- Pool Features
- None
- Spa
- None
- Water
- Public
- Utilities
- Sewer Available
- Faces
- Southeast
- Units
- 2
Community Features
- Subdivision
- Balboa Island - Main Island (BALM)
- Community Features
- Curbs, Storm Drains, Suburban, Sidewalks
- Security
- Prewired, Carbon Monoxide Detectors, Smoke Detectors
The record
Property History for 305 Diamond Avenue
| Date | Event | Price | Note |
|---|---|---|---|
| May 20, 2013 | Sold | $2,375,000 | |
| Mar 6, 2013 | Listed for sale | $2,395,000 |
No prior MLS sales on record for this home since 2012.
Added by Realatrends Real Estate
Flood, Fire and Earthquake Zones for 305 Diamond Avenue
We looked up this home's map point in public government maps. These facts are not part of the MLS listing.
Hazard and noise zones
- Flood zone
Zone X, 0.2 percent annual chance flood hazard. Outside FEMA's Special Flood Hazard Area.
FEMA National Flood Hazard Layer, FIRM panel 06059C0382K effective March 21, 2019. Checked October 15, 2026.
- Fire hazard severity zone
Not in a fire hazard severity zone on the State Fire Marshal's map.
CAL FIRE, State Fire Marshal map for Local Responsibility Areas, March 24, 2025. Checked October 15, 2026.
- Earthquake fault zone
Outside the Alquist-Priolo Earthquake Fault Zones.
California Geological Survey, Earthquake Fault Zones map, Newport Beach quadrangle, released July 1, 1986. Checked October 15, 2026.
- Liquefaction zone
Inside a Seismic Hazard Zone for liquefaction.
California Geological Survey, Seismic Hazard Zones map, Newport Beach quadrangle, released April 15, 1998. Checked October 15, 2026.
- Landslide zone
Outside the earthquake-induced landslide zones.
California Geological Survey, Seismic Hazard Zones map, Newport Beach quadrangle, released April 15, 1998. Checked October 15, 2026.
- Tsunami hazard area
Inside the Tsunami Hazard Area on the State's evacuation planning map.
California Geological Survey and Cal OES, Tsunami Hazard Area map for Orange County (2021). Checked October 15, 2026.
- Airport noise
Outside John Wayne Airport's 60 dB CNEL noise contour, 0.9 miles from it.
Airport Land Use Commission for Orange County, Airport Environs Land Use Plan noise contours. Checked October 15, 2026.
Internet and charging
- Fixed internet
Fiber: AT&T, up to 5,000 Mbps, at 30 of 30 residential locations in this census block. Cable: Spectrum, up to 1,000 Mbps, at 30 of 30. Fixed wireless: Verizon, up to 300 Mbps, at 30 of 30.
FCC National Broadband Map, provider-reported data as of December 31, 2025, for census block 060590630061001, not for this address. Not endorsed by the FCC. Checked October 15, 2026.
- EV charging
Nearest public charger 0.7 miles away (Tesla Destination, 2 Level 2 ports). 160 public charging ports within 3 miles.
U.S. Department of Energy, Alternative Fuels Data Center. Straight-line distance. Checked October 15, 2026.
These facts are for the listing's map point, which can sit off the lot. A zone line can also cross a lot, and agencies revise their maps. In cities, the fire zone line follows the State Fire Marshal's 2025 map; each city adopts its own map and may add areas. These lines are not a Natural Hazard Disclosure. Check the official maps and the seller's disclosures before you rely on them. Sources for the earthquake zone lines: Reproduced with permission, California Geological Survey, Webservice of Official Maps of Alquist-Priolo Earthquake Fault Zones (2025). Reproduced with permission, California Geological Survey, Webservice of Official Maps of Seismic Hazard Zones (2025).
Official maps
Next steps
Looking for something similar
305 Diamond Avenue is no longer on the market, but comparable homes come up in Newport Beach regularly. We can tell you what this one actually closed at and set up alerts for listings that match it.
Selling near 305 Diamond Avenue
Thinking of selling nearby? We bring current Balboa Island - Main Island sales data and a clear pricing strategy to every listing, backed by more than 700 closed sales and over $1B in Orange County volume. Start with a free home valuation, or reach out to talk through your options.
The neighborhood
About Newport Beach
Set along the Pacific in Orange County, Newport Beach surrounds Newport Harbor, where Balboa Island, Lido Isle, and the Balboa Peninsula frame one of California's largest recreational harbors. The city stretches from the Balboa and Newport piers to Corona del Mar and Fashion Island, within the Newport-Mesa Unified School District.
Balboa Island - Main Island home sales, past 12 months
- Homes sold
- 22
- Median price
- $5,187,500
- Median days on market
- 15
- Median per sq ft
- $2,501
Recorded MLS closings of single-family homes, Nov 3, 2025 to Nov 3, 2026. Days on market run from listing to going under contract.
Recent Balboa Island - Main Island sales
| Address | Closed | Price | Sq ft | Per sq ft | Days on market |
|---|---|---|---|---|---|
| 118 Sapphire | Oct 30, 2026 | $6,275,000 | 2,321 | $2,704 | 31 |
| 1207 N Bay Front | Oct 14, 2026 | $7,250,000 | 992 | $7,308 | 128 |
| 226 Opal | Oct 9, 2026 | $2,980,000 | 936 | $3,184 | 10 |
| 225 Diamond | Sep 29, 2026 | $7,585,000 | 2,312 | $3,281 | 43 |
| 325 Grand Canal | Sep 28, 2026 | $4,400,000 | 2,542 | $1,731 | 16 |
See 17 homes for sale in Balboa Island - Main Island Newport Beach housing market
Schools
School District for 305 Diamond Avenue
As listed in the MLS record. Confirm attendance boundaries with the school district.
The MLS record lists the school district as Newport Mesa Unified.
Living in Newport Beach covers its schools, parks and beaches.
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Listed by Peggy Turner of Coldwell Banker
Listing information updated Oct 17, 2022 at 12:19 PM PT. Source: CRMLS.
This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. The display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and should investigate the data themselves or retain appropriate professionals. Information from sources other than the Listing Agent may have been included in the MLS data. Unless otherwise specified in writing, the Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent.