Since 1957, the name to choose when building a luxury custom home has been MJ Construction. Covering both Palm Beach and southern Martin counties, they have built magnificent custom designed residences in exclusive communities such as Palm Beach, Lost Tree Village, Admiral’s Cove, Frenchman’s Creek, Jupiter Island, Jupiter Hills, as well as many other communities. Owner John McKinley is committed to maintaining the highest standards of professionalism, integrity and quality that the company’s reputation is based on. He is state certified as a general contractor, and an active member of the National Home Builder’s Association.


With 56 years in the business of building custom homes, MJ Construction is experienced in every aspect of the building process. Whether you are designing a new home, remodeling, or adding an addition, the professional staff will be there to guide you through the entire process. They take pride in their ability to translate the ideas of their customers, architects and designers into quality houses, and confidently guarantee their work. The challenges of each new project are met with the knowledge and capabilities only experience can provide, and their innovative designs and unequaled quality are reflected in every project they take on. Every customer can be assured they will receive outstanding service and quality construction that will result in a home that both they and their builder will be proud of.


Quality of materials and workmanship is of the utmost importance when constructing a custom built residence. So is the quality of the people involved in the process. That’s why MJ Construction uses a network of notable architects, designers, suppliers and vendors for every project. The long-term commitment of the company to stand behind each and every home they build, and their longevity in the business attests to their commitment to quality from top to bottom, start to finish.


One of the most important assets a business can have is a good reputation. Customer referrals are what keep MJ Construction busy year round. You haven’t seen any fancy billboards, TV commercials, or newspaper ads. All work is the result of references from satisfied clients and business associates. Potential customers are encouraged to ask those who’ve worked with the company about their experiences. Five decades of attention to detail, satisfied customers, superior craftsmanship, and a positive approach has earned MJ Construction their stellar reputation.