Improve your home with RM Garhart and Sons, a home contractor in Elkridge, Maryland. For more than 20 years, our husband-and-wife-owned business has specialized in room additions and residential remodeling services. With our competitive and affordable services you can turn your ranch home into a classic colonial with a second story addition. We are insured and have maintained our Maryland Home Commission license since 1986 under license #MHIC#41888. References and testimonials are available upon request.