MCIII Development Group

MCIII Development Group ✨ Formerly known as M.R. Development

A new name. The same legacy of building exceptional communities. M.R. A family owned and operated company, M.R. While M.R.

Development is a real estate development firm with a diverse skill set and a long history of master planning single family home communities and developing multi family, commercial and retail projects in the DFW area. Development was founded by Robert McCaslin Sr. who now shares the responsibilities of running the day to day operations with his son Robert McCaslin Jr. and daughter Kim McCaslin. Rob

ert (Bobby) McCaslin Sr. started the company with the goal of developing quality, carefully planned properties in proven familiar markets so Texas families will have a place they are proud to call home. His vision was to establish communities and to build strong relationships and partnerships with investors and builders to bring that vision to fruition. Development has developed over 3,500 lots in sixteen (16) single family neighborhoods, several mutli-family apartment communities and commercial, retail and office park projects. The company’s strategic plan is to focus on land acquisitions, zoning and entitlement in high opportunity areas, then assess what is the best use of the land and work in conjunction with the respective municipality to ensure that both visions align. Development has broadened its area of expertise, it remains true to the core values that have made M.R. Development successful-focus, financial strength and relationships.

Built in 1878. Free to walk in. And one of the most underrated creative spaces in all of North Texas. The Wallace-Hall A...
05/29/2026

Built in 1878. Free to walk in. And one of the most underrated creative spaces in all of North Texas.

The Wallace-Hall Art House sits at the corner of South Main and Kimball in Historic Downtown Mansfield.

Three floors of rotating gallery exhibitions, art classes for every skill level, and studio residencies for working local artists. Gallery openings come with live music and work available to buy directly from the artists who made it.

Downtown Mansfield is building something real. This is part of it.

Plan your visit at mansfieldtexasarts.org | 210 S. Main St., Mansfield

Grand Prairie has quietly become one of the best date night cities in DFW, and most people still don't know it.From loca...
05/27/2026

Grand Prairie has quietly become one of the best date night cities in DFW, and most people still don't know it.

From local favorites like Como En Casa to nights out at EpicCentral, there’s no shortage of ways to spend time together in GP. And with communities like The Duvall continuing to grow, it’s easy to see why more people are choosing to call Grand Prairie home.

Dinner at The Finch. The Illuvia water show. Racing karts at Andretti. Brunch at Como En Casa.
Three completely different vibes, all within a few miles of each other.

Whatever kind of date night you’re looking for, Grand Prairie has a spot for you. Drop your go-to GP date spot in the comments.

Learn more about The Duvall Apartments: duvallgrandprairie.com
Explore the City of Grand Prairie: gptx.org
For reservations and info: thefinchrestaurant.com | andrettikarting.com | topgolf.com

33,580 meals. 23 people moved into permanent housing. All in one year.The Grand Prairie Homeless Outreach Organization d...
05/25/2026

33,580 meals. 23 people moved into permanent housing. All in one year.

The Grand Prairie Homeless Outreach Organization doesn't just show up with resources. They build real exit plans, help people get IDs, connect clients to healthcare, and stay in the picture long after the immediate crisis is over. And their GPHOO Works program is creating pathways to employment through creative skill-building.

This is what community care looks like. If you're in Grand Prairie and want to help, here's how.

Donate, volunteer, or drop off supplies: gphoo.org | [email protected] | (214) 212-7958

Buying in a new development is different from buying a resale home. The process is cleaner in some ways and more layered...
05/22/2026

Buying in a new development is different from buying a resale home. The process is cleaner in some ways and more layered in others, and going in informed makes all the difference.

- What phases are planned and when will amenities be complete?
- What does the HOA actually cover?
- What builder incentives are on the table right now?

These are the questions worth asking before you sign anything.
The right developer will have clear answers to all of them.

Explore M3 Ranch in Mansfield: mc3development.com/m3ranch

Builders in M3 Ranch:
amlegendhomes.com
highlandhomes.com
jhoustonhomes.com
perryhomes.com

In 1865, a doctor from Missouri settled in what is now Denton County and decided to stay. That decision became Corinth, ...
05/20/2026

In 1865, a doctor from Missouri settled in what is now Denton County and decided to stay. That decision became Corinth, Texas.

From a Civil War-era settlement to a city of 22,000+, Corinth's growth is the kind of story that reminds you that every great city starts with someone who believed in a piece of land before anyone else did.

Shiloh Cemetery still stands. So does the community Dr. Ball helped start.

Explore Corinth at cityofcorinth.com

Please help us welcome Luke Maxwell to the MCIII Development Group team as our Summer Intern.Born and raised in Mansfiel...
05/18/2026

Please help us welcome Luke Maxwell to the MCIII Development Group team as our Summer Intern.

Born and raised in Mansfield and currently pursuing a Finance degree at Texas A&M University, Luke has a passion for real estate development and a drive to keep learning and growing in the industry.

We’re excited to have him alongside the team this summer as he gets hands-on experience in the world of development, vision, and community impact. From one Aggie family to another… the future of real estate development is in good hands.

Welcome to MCIII, Luke. Gig ’em👍

Baseball season is back, and watching the Rangers, you start to notice something.Scouting is site selection. Spring trai...
05/17/2026

Baseball season is back, and watching the Rangers, you start to notice something.

Scouting is site selection. Spring training is entitlements. The season is construction. And the win is a finished community where families actually live, gather, and put down roots.

The game is won or lost long before opening day. Same goes for land development. The work nobody sees is usually the most important part.

Catch the Rangers at Globe Life Field: mlb.com/rangers

Two free events. One great city. All in May.The Commons at Agora is one of the most active community spaces in North Tex...
05/16/2026

Two free events. One great city. All in May.

The Commons at Agora is one of the most active community spaces in North Texas, and this month proves it.

The Community Market on May 23.
Dueling pianos at Agora Music Fest on May 29.

No tickets. No cover. Just Corinth showing up for its residents the way it always does.

Full event details at cityofcorinth.com | Commons at Agora, 3280 Agora Way, Corinth

Jerry Seinfeld. Will Downing and Jeffrey Osborne. The Rock Orchestra by Candlelight.That's the May lineup at Texas Trust...
05/14/2026

Jerry Seinfeld. Will Downing and Jeffrey Osborne. The Rock Orchestra by Candlelight.

That's the May lineup at Texas Trust CU Theatre, right here in Grand Prairie, and it's one of the best months this venue has put together in a while.

Whether it's a date night, a girls' night, or a long-overdue outing with someone you've been meaning to see, there's a show on this schedule for you. Seats fill up fast.

Check the full lineup and grab tickets at do214.com, and don’t forget to learn more about The Duvall at duvalgrandprairie.com!

Happy Mother’s Day to all of the incredible moms out there. 🤍Today is about celebrating the women who lead with love, sh...
05/10/2026

Happy Mother’s Day to all of the incredible moms out there. 🤍

Today is about celebrating the women who lead with love, show up without hesitation, and make the people around them feel safe, supported, and cared for.

The quiet strength.
The constant encouragement.
The little moments that become lifelong memories.

Mothers have a way of making life feel fuller, warmer, and more meaningful, and today we’re especially grateful for the ones closest to us.

Wishing everyone a beautiful Mother’s Day spent with the people you love most.

94% graduation rate. The #1 ranked STEM high school in Texas. A student body representing over a dozen nationalities. 3...
05/08/2026

94% graduation rate. The #1 ranked STEM high school in Texas. A student body representing over a dozen nationalities. 35,000+ kids showing up every day.

None of that happens without teachers.

This is the final day of Teacher Appreciation Week, and Mansfield ISD has more than earned it. To every educator in this district: the families in these communities see what you do, and it matters more than a single week on the calendar can capture.

Congratulations to the Class of 2026. You had great people in your corner.

Learn more about Mansfield ISD at mansfieldisd.org

Address

100 N. Mitchell Road
Mansfield, TX
76063

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+18174770797

Website

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