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Thirty-three years in Howard County

Same family, same address, same phone number since 1993 — and the owner still does the estimates.

Reviewed by Bill Gmeinwieser, President · MHIC #16606 · MD Home Builder #1369 · Updated September 2026

Thirty-three years in Howard County — Horizons Unlimited Home Improvements, Howard County MD

Company facts

Horizons Unlimited Home Improvements, Inc. is a family-operated home improvement contractor and registered home builder at 7387 Washington Blvd., Suite 104, Elkridge, Maryland 21075. Founded August 1, 1993 by William L. Gmeinwieser Sr., who serves as President alongside Vice President Debra K. Gmeinwieser. Maryland Home Improvement Contractor license #16606; Maryland Home Builder Registration #1369. BBB-accredited with an A+ rating since March 27, 2023. More than 7,000 customers served in the Washington–Baltimore region.

The company

Thirty-three years, one family, one phone number.

Bill Gmeinwieser started Horizons Unlimited in 1993, after more than a decade already spent building in Maryland. He has now been at it over forty years. The company registered with the Maryland Home Improvement Commission early enough that its license number — 16606 — is a low one, which is a small thing that tells you something real: it has been the same business, under the same name, for a long time.

It is still family-operated. Bill is President; Debra Gmeinwieser is Vice President. Bill personally conducts most estimates, which is unusual at this size and is deliberate — the person who prices the job is the person accountable for it. A dedicated superintendent runs daily site activity, and the subcontractors are long-term relationships rather than whoever was available.

The company has served more than 7,000 customers across the Washington and Baltimore region, on work ranging from a few hundred dollars to roughly $200,000. In 2023, Howard County Executive Calvin Ball presented Horizons Unlimited with a Special Recognition for thirty years of service to the county, joined by Jennifer Jones, CEO of the Howard County Economic Development Authority, and Chief of Staff Angela Cabellon.

"Service, quality, and satisfaction is our ultimate goal."

Bill Gmeinwieser and the Horizons Unlimited team receiving a Special Recognition from Howard County Executive Calvin Ball outside the company's Elkridge office

Company at a glance
Founded	August 1, 1993 (33 years)
President	William L. Gmeinwieser Sr.
Vice President	Debra K. Gmeinwieser
MHIC license	#16606
MD Home Builder Reg.	#1369
BBB	Accredited, A+ rating (since 3/27/2023)
Customers served	7,000+
Project range	$500 – $200,000
Headquarters	Elkridge, Howard County, MD

Credentials

What we are certified to do.

Licensing is the floor, not the ceiling. These are the manufacturer certifications that govern whose warranty we can offer you.

GAF Certified Roofer

Factory-certified for GAF asphalt shingle systems.

CertainTeed Certified Roofer

Certified installer for CertainTeed roofing products.

Firestone Certified Installer

Certified for Firestone EPDM rubber flat-roof systems.

BBB Accredited A+

Accredited with the Better Business Bureau since March 27, 2023.

Where we work

Howard County first, and the counties around it.

Headquartered in Elkridge, which puts most of Howard County within a half-hour drive — one reason the same crew can be on your job two days running.

Elkridge, MD Columbia, MD Ellicott City, MD Jessup, MD Savage, MD Laurel, MD Clarksville, MD Fulton, MD Highland, MD Dayton, MD Glenelg, MD West Friendship, MD Woodbine, MD Lisbon, MD Marriottsville, MD Hanover, MD Severn, MD Glen Burnie, MD Annapolis Junction, MD Odenton, MD Catonsville, MD Arbutus, MD Halethorpe, MD Baltimore, MD Sykesville, MD Eldersburg, MD

Q&A

About the company

How long has Horizons Unlimited been in business?

The company was founded on August 1, 1993 and has operated continuously since — 33 years as of 2026. Owner William L. Gmeinwieser Sr. has been building in Maryland for more than 40 years.

Is Horizons Unlimited a family business?

Yes. It is family-operated. William L. Gmeinwieser Sr. is President and Debra K. Gmeinwieser is Vice President. Bill personally conducts most estimates rather than employing commissioned salespeople.

What is Horizons Unlimited's BBB rating?

Horizons Unlimited Home Improvements, Inc. is accredited by the Better Business Bureau with an A+ rating, accredited since March 27, 2023. The company has also been recognized as an Angi (Angie's List) A+ remodeler and received a Remodeling & Restoration Contractors Best of 2014 award.

What certifications does Horizons Unlimited hold?

The company reports certification as a GAF certified roofer, a CertainTeed certified roofer, and a Firestone certified installer for EPDM rubber roofing systems — in addition to Maryland Home Improvement Contractor license #16606 and Maryland Home Builder Registration #1369.

Was Horizons Unlimited recognized by Howard County?

Yes. In 2023, Howard County Executive Calvin Ball presented the company with a Special Recognition commemorating 30 years of service to the Howard County community, in a presentation that also included Jennifer Jones, CEO of the Howard County Economic Development Authority, and Angela Cabellon, Chief of Staff of Howard County.