Marigrace O'Brien

Marigrace O'Brien
Real Estate Agent
Portland ME

(ME: BA923293)

REALTOR® 1 Active Listings Serves Cumberland County, ME
View on Realtor.com

Contact Information

Brokerage
Gardner Real Estate Group
Office Address
511 Congress St
Portland, ME  04101
(Cumberland County)
Office Phone
207-427-3637
Office Fax
207-415-4493
Mobile
207-332-8030
Email
mgobrien09@gmail.com
Website

Service Areas

Falmouth Foreside: ME Falmouth: ME South Portland: ME Portland: ME Scarborough: ME Cape Elizabeth: ME Pond Cove: ME Cumberland Center: ME Cumberland: ME Little Falls: ME South Windham: ME Gorham: ME Gray: ME Windham: ME North Windham: ME Bailey Island: ME Harpswell: ME Bowdoinham: ME Bridgton: ME Sweden: ME North Bridgton: ME Denmark: ME Birch Island: ME Mere Point: ME Brunswick Station: ME Brunswick: ME Cundys Harbor: ME Topsham: ME South Freeport: ME Bustins Island: ME Casco: ME South Casco: ME Chebeague Island: ME Cliff Island: ME Long Island: ME East Baldwin: ME Sebago: ME Pownal: ME Freeport: ME Woolwich: ME Arrowsic: ME Phippsburg: ME Georgetown: ME Sebasco Estates: ME MacMahan: ME Bath: ME West Bath: ME Richmond: ME Bowdoin: ME New Gloucester: ME Cumberland Foreside: ME Diamond Cove: ME Diamond Island: ME Great Diamond Island: ME Peaks Island: ME North Yarmouth: ME Yarmouth: ME Littlejohn Island: ME Cousins Island: ME Westbrook: ME Pejepscot: ME Standish: ME Sebago Lake: ME South Harpswell: ME Frye Island: ME Raymond: ME Orrs Island: ME Naples: ME Harrison: ME

About Marigrace O'Brien

Grace O’Brien is a licensed Associate Broker and Realtor with the Gardner Real Estate Group, situated in the vibrant Arts District of downtown Portland, Maine.

Beginning her real estate career in 2018, Grace transitioned from over two decades in the hospitality sector. Since her first day in the industry, she has dedicated herself to her clients, successfully assisting hundreds of families and individuals in buying and selling homes, condominiums, and raw land throughout Maine. Her initial focus on buyer representation allowed her to connect deeply with clients, particularly first-time homebuyers, guiding them through what is often their most significant financial decision. This rewarding experience solidified her passion for real estate, leading to numerous repeat clients seeking her expertise for upsizing, downsizing, or transitioning to new properties.

Grace’s husband, Mat O’Brien, is a local entrepreneur who operates a design and build firm in Portland. Their complementary professions often intersect, and Grace values his support and insights, which benefit both her and her clients. Mat also manages a specialty hardwoods lumberyard and a custom cabinet and woodworking shop, further enhancing the resources available to Grace’s clientele.

Residing in Falmouth, Maine, Grace enjoys life with her youngest daughter, Ella, and their rescue dog, Zara. Their eldest daughter, Kiera, is currently completing her studies at the University of Vermont.

Cumberland County, ME Real Estate Market Analysis (Single Family Homes)

$986,681
Avg. Listing Price
From Marigrace's portfolio
3.4 / 2.5
Avg. Beds/Baths
Typical property size
2,286 sf
Avg. Square Footage
Interior living space
616
Active Listings
Current inventory

If you need to reach active real estate agents in Cumberland County, Maine, this list was built for you. Mortgage lenders looking to grow referral partnerships, title companies expanding their agent network, PropTech platforms launching in New England, and continuing education providers targeting license renewal cycles are among the most frequent buyers. Insurance professionals, recruiters building agent pipelines, and B2B marketers with agent-specific offers round out the typical customer profile.

When you buy a Cumberland County real estate agent email list, you are investing in direct access to verified, licensed professionals — not a scraped directory of outdated contacts. This list gives you {{AGENT_COUNT}} actively licensed agents with confirmed email addresses, plus {{CELL_COUNT}} agents who also have verified cell phone numbers on file. Whether you are launching a cold email sequence through a platform like Zap Contact (zapcontact.com) or building a multi-channel outreach campaign, these are the contacts that actually move the needle.

Why Buy a Cumberland County Real Estate Agent Email List From Dr Bill

Data quality is not an afterthought here — it is the product. Every contact is sourced directly from the Maine state real estate licensing board, meaning you are only reaching agents who are currently licensed and legally practicing. New emails are added weekly, the list is cleaned monthly, and the entire database is fully refreshed twice per year. That discipline produces a 96% deliverability guarantee that cheap list vendors simply cannot match.

Generic list brokers sell you whatever they have sitting in a flat file. Dr Bill has been doing this since 2005 and has sold over 31,000 lists across the country. That track record exists because the methodology is rigorous and the data holds up when clients actually use it. When your campaign goes out, you are not burning sender reputation on dead addresses.

How to Use This Cumberland County Agent List

Cold email is the most common use case, and this list is formatted for immediate upload into platforms like Zap Contact and other modern cold-email tools. From there you can build automated sequences, track opens and replies, and follow up with direct mail or phone outreach using the included cell numbers. LinkedIn matching is another powerful tactic — upload the emails as a custom audience and run targeted ads alongside your email sequence.

Segmenting by broker versus sales agent lets you tailor your message by decision-making authority. A broker needs to hear a different pitch than an independent agent building their own book of business. Having that distinction inside the data makes your campaigns sharper and your conversion rates higher.

Why Cumberland County, Maine Agent Data Matters

Cumberland County covers Portland, South Portland, Scarborough, Westbrook, Falmouth, Cape Elizabeth, and Gorham — a concentrated pocket of real estate activity that rewards precise targeting. With {{AGENT_COUNT}} licensed agents operating across this geography, there is real volume here, and no other vendor offers segmentation down to the zip code level within the county.

Statewide blasts waste spend on agents in markets that are irrelevant to your offer. Targeting Cumberland County specifically means your message lands with agents who are actually active in the communities and price points your product or service serves, making every send more relevant and every response more valuable.

Current Property Listings

As of 6/21/2026, Marigrace O'Brien has 1 property for sale in Portland and surrounding areas.

$459,000

Listed 2026-05-27

29 Brook Rd
Portland, ME  04103

Beds: 3.0
Baths: 1.0
Sq Ft: 998
Lot: 5,663 sf
Single Family Map
View Full Details

$899,900

Listed 2026-04-08

387 Commercial St Unit 535
Portland, ME  04101

Beds: 2.0
Baths: 2.0
Sq Ft: 1,115
Condo Map
View Full Details

Current Property Rentals

Marigrace O'Brien currently has no rental properties available in Portland and surrounding areas. Check back later.