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Business Details
47 Years
experience
Your Trusted Partner for Real Estate Development and Management Solutions
Founded in 1979, Mountain Development Corp. has established itself as a leader in commercial real estate with over 40 years of experience. Our full-service approach encompasses development, acquisitions, leasing, construction, and property management, supported by in-house teams of experts. We specialize in opportunistic and value-added investments, delivering risk-adjusted returns through strategic partnerships and a reputation for closing transactions efficiently.

Our commitment to excellence extends to tenant experience, with responsive property management and innovative solutions tailored to evolving market demands. Decades of construction expertise ensure projects are completed on time, on budget, and to the highest standards, reinforcing our position as a trusted industry authority.
Services
Acquisitions Leasing Construction Property Management Development Investment Management Tenant Representation Building Repositioning Portfolio Management Commercial Real Estate
Details
  • Year established: 1979
Highlights and features
  • We have over 40 years of experience in commercial real estate development and management.
  • Our in-house teams handle all aspects of real estate projects from start to finish.
  • We maintain a proven track record of closing transactions efficiently and transparently.
  • Our strategic focus on value-added investments maximizes returns for partners and tenants.
  • We prioritize tenant satisfaction through responsive property management and modern amenities.
Services
Commercial Real Estate
Mountain Development Corp. provides end-to-end commercial real estate solutions, including acquisition, development, leasing, and management. Our expertise spans office, industrial, and retail properties, with a focus on value-added investments. Clients benefit from strategic partnerships and a proven track record in the Northeast market.
Property Management
Our property management services ensure optimal tenant satisfaction through responsive operations and maintenance. We oversee all aspects of building management, from financial planning to facility upgrades, maintaining high standards across our diverse portfolio of commercial assets.
Construction
With decades of construction expertise, we deliver accurate cost estimates, design development, and preconstruction guidance. Our team ensures projects meet deadlines and budgets while maintaining quality, leveraging relationships with top regional professionals and firms.
Leasing
Mountain Development Corp. guides tenants through every leasing phase, offering tailored solutions for new leases, renewals, and extensions. We prioritize transparent communication and creative problem-solving to meet the unique needs of businesses in dynamic markets.
Investment Management
We specialize in opportunistic real estate investments, focusing on risk-adjusted returns for principals and partners. Our approach combines market analysis with strategic acquisitions and repositioning, ensuring long-term value creation across commercial property sectors.
People
L. Robert Lieb
Chairman and Chief Executive Officer
Founder of Mountain Development Corp., L. Robert Lieb transformed a startup into a leading investment organization through entrepreneurial vision and philanthropy. His leadership established the company's foundation for growth and innovation.
Michael Allen Seeve
President
As President, Michael Seeve provides strategic leadership for Mountain Development Corp., coordinating with executives and partners. He actively oversees major projects, leveraging his expertise to drive the firm's continued success in commercial real estate.
Bill Martini
Partner
Bill Martini sources new investments and manages development projects while overseeing asset management and leasing. With a BA from Georgetown University and over two decades at MDC, he brings deep industry expertise to the firm.
Nicholas Mazza
Director of Operations
Nicholas Mazza directs portfolio oversight for Mountain Development Corp., managing acquisitions, leasing, construction, and third-party operations. His comprehensive experience ensures efficient execution across the company's diverse real estate holdings.
Irene Fitzgerald
Chief Financial Officer
Irene Fitzgerald oversees all financial aspects of Mountain Development Corp. and its joint ventures. With over 30 years in commercial real estate finance, she provides critical expertise in managing the company's fiscal strategy and operations.
Questions
What types of properties does Mountain Development Corp. specialize in?
We focus on commercial real estate including office, industrial, retail, and mixed-use properties across the Northeast, with expertise in acquisitions, development, and management.
How long has Mountain Development Corp. been in business?
Founded in 1979, we have over 40 years of experience in commercial real estate development, investment, and property management.
What areas does Mountain Development Corp. serve?
We operate primarily in New Jersey, New York, Connecticut, Pennsylvania, and Massachusetts, with a growing presence in key Northeast markets.
Does Mountain Development Corp. offer financing options for tenants?
Yes, we provide flexible financing solutions for select tenants and partners as part of our commitment to creating value-driven real estate opportunities.
How does Mountain Development Corp. approach property management?
Our property management prioritizes tenant satisfaction through responsive service, proactive maintenance, and modern amenities tailored to evolving business needs.
Reviews (1)
Krissy P.
Oct 24, 2018 Report
Poorly maintained building by this company. Leaks all over the building, poor ventilation and the bathrooms need a major renovation. No money put into this building it seems. No wonder they can't fill vacant offices. 777 Passaic Ave in Clifton.