MHIC #16606 MD Home Builder #1369 4.5★ (40) BBB Accredited A+ Family-run since 1993
  410-796-1333
Screened porch addition built by Horizons Unlimited Home Improvements in Maryland
Since 1993 Howard County's family contractor

The remodeler who is also a registered home builder.

Horizons Unlimited has built for Maryland homeowners from the same Elkridge office since 1993 — additions, kitchens, baths, roofs, siding and windows. MHIC #16606. Maryland Home Builder Registration #1369. BBB A+. And the owner still prices your job himself.

33Years in business
7,000+Customers served
4.5Google rating (40)

Request a free estimate

Usually performed by the owner, Bill Gmeinwieser. No obligation.

Or call 410-796-1333 · Mon–Fri 9–5, Sat 9–4
MHIC #16606 · MD Home Builder Reg #1369

MHIC #16606 MD Home Builder #1369 4.5★ · 40 Google reviews BBB Accredited A+ GAF · CertainTeed · Firestone certified Licensed, bonded & insured
Why homeowners pick us

Two licenses, one crew, and the owner on your job site.

Short answer

Horizons Unlimited Home Improvements is a family-run remodeling contractor and registered home builder in Elkridge, Maryland, serving Howard County and the surrounding counties since 1993. The company holds Maryland Home Improvement Contractor license #16606 and Maryland Home Builder Registration #1369, is BBB-accredited with an A+ rating, and has completed work for more than 7,000 customers. Owner Bill Gmeinwieser personally walks and prices nearly every estimate.

Most remodelers carry a home improvement license. Far fewer are also a registered Maryland home builder — the credential that covers building a dwelling from the footing up. Horizons Unlimited holds both. That is why the same company can hang a replacement window in the morning and pour the footings for a two-story addition in the afternoon.

  • Owner-run estimates. Bill has been building in Maryland for over 40 years. He looks at the job himself, so the number you get comes from the person responsible for it.
  • One contractor, whole scope. Structure, roof, siding, windows, electrical rough-in, finishes. No handing you off between four trades who each blame the last one.
  • Long-tenured subcontractors. The same framing, plumbing, and electrical crews for years — not whoever answered the phone that week.
  • A supervisor on the job. A dedicated superintendent runs daily activity, so somebody is accountable for the site every day it is open.
Howard County Executive Calvin Ball presenting a special recognition to Bill Gmeinwieser and the Horizons Unlimited team outside their Elkridge office
Recognized by Howard County. In 2023, County Executive Calvin Ball — joined by Jennifer Jones of the Howard County Economic Development Authority and Chief of Staff Angela Cabellon — presented Horizons Unlimited with a Special Recognition for 30 years of service to the Howard County community.
What we build

Ten services. One licensed contractor.

From a single replacement window to a custom home on your lot — and the structural work in between that most remodelers subcontract out or decline.

Home Additions & In-Law Suites — Horizons Unlimited Home Improvements, Howard County MD

Home Additions & In-Law Suites

Structural additions, second stories, in-law and multigenerational suites, sunrooms and screened porches — designed, permitted, and built by a registered Maryland home builder.

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Kitchen Remodeling — Horizons Unlimited Home Improvements, Howard County MD

Kitchen Remodeling

Full gut kitchens and targeted updates — cabinetry, countertops, lighting, flooring, and the electrical and plumbing work behind the walls.

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Bathroom Remodeling — Horizons Unlimited Home Improvements, Howard County MD

Bathroom Remodeling

Tiled showers, soaking tubs, double vanities, and full accessibility conversions — waterproofed properly and finished cleanly.

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Roofing — Horizons Unlimited Home Improvements, Howard County MD

Roofing

Asphalt shingle, cedar shake, slate, metal, and EPDM rubber. GAF, CertainTeed, and Firestone certified installation.

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Siding — Horizons Unlimited Home Improvements, Howard County MD

Siding

Vinyl and aluminum siding, trim, and wrap — installed with proper flashing and house-wrap detailing so the wall assembly stays dry.

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Windows & Doors — Horizons Unlimited Home Improvements, Howard County MD

Windows & Doors

Energy-efficient vinyl replacement windows with custom color matching, plus entry, patio, and French door replacement.

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Decks & Porches — Horizons Unlimited Home Improvements, Howard County MD

Decks & Porches

PVC, composite, and wood decks, screened porches, and covered porches — engineered, permitted, and inspected.

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Egress Windows & Basement Code — Horizons Unlimited Home Improvements, Howard County MD

Egress Windows & Basement Code

Code-compliant basement egress windows and window wells — the single requirement that decides whether a finished basement bedroom is legal.

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Storm & Insurance Repair — Horizons Unlimited Home Improvements, Howard County MD

Storm & Insurance Repair

Wind, hail, and fallen-tree damage — from a single leak to structural rebuild, handled by one licensed contractor instead of four subcontractors.

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Custom Homes — Horizons Unlimited Home Improvements, Howard County MD

Custom Homes

Design/build from concept to certificate of occupancy, including site development and permitting, under Maryland Home Builder Registration #1369.

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Recent work

Jobs we finished this year.

Real photographs from real Maryland job sites — a screened porch addition, a full primary bath, a reclaimed-wood kitchen wall, and a privacy fence line. No stock photography in this section.

Screened porch addition — Horizons Unlimited Home Improvements, Maryland
Screened porch additionVaulted beadboard ceiling, ceiling fan, composite decking, and full-height screen panels off an existing deck.
Screened porch — house connection — Horizons Unlimited Home Improvements, Maryland
Screened porch — house connectionFrench-door entry, matched siding, and a clean transition to the open grilling deck.
Primary bath — double vanity — Horizons Unlimited Home Improvements, Maryland
Primary bath — double vanityQuartz top, undermount sinks, matte black fixtures, and backlit mirrors.
Walk-in tiled shower — Horizons Unlimited Home Improvements, Maryland
Walk-in tiled showerLarge-format porcelain walls, mosaic pan, recessed niches, and a frameless glass door.
Tiled soaking tub deck — Horizons Unlimited Home Improvements, Maryland
Tiled soaking tub deckAlcove tub set into a tiled deck and surround under a new picture window.
Tub surround detail — Horizons Unlimited Home Improvements, Maryland
Tub surround detailWood-look LVP flooring carried through, with tile returned to the window opening.
In our clients' words

Honest is the word that keeps coming up.

A 4.5 average across 40 Google reviews, and these are verbatim. Read the kitchen story from Travis Clark in full — a contractor who tells you about their own mistake and refuses your money to fix it is the clearest signal you will get.

4.5
★★★★½
40 Google reviews

What customers mention

new bathroom 8polite team 5timeliness 5new deck build 3kitchen renovation 3honest contractor 2front porch 2meticulous team 2

Topic tags and counts are Google’s own, generated from the review text.

★★★★★
We got a garage addition with mudroom, front porch, screened in deck, and new bathroom from Horizons Unlimited. We got good service for a very fair price and love the new upgrades. Would highly recommend.
NK
Nick KatenkampGarage addition, mudroom, porch, screened deck & bath · Google review, 2025
★★★★★
My wife and I are first time homebuyers. I severely underestimated just how difficult it is to find an honest, skillful, reliable contractor. When a small mistake happened on our kitchen, Bill called me up, showed me their error, and before the end of the day they had ordered a new cabinet door so they could correct it. Bill insisted he would not accept our final check until he had fixed it. When we made a mistake of our own and needed two larger, more expensive cabinets, Horizons Unlimited refused to take our extra money. The team at Horizons is honest and trustworthy to a degree that is rarely seen anymore.
TC
Travis ClarkFull kitchen remodel · Google review, 2021
★★★★★
We needed our main bathroom renovated and had only a week and a half to do it. Bill's team worked around the clock and over the weekend to get our bathroom done in just 10 days. …
LF
Laura FeagaMain bathroom renovation · Google review, 2023
★★★★★
HUI built us a stunning deck and screened in porch. From the very first meeting, Bill and his team were professional and responsive. They used top quality materials. …
MA
Mike AllenDeck & screened porch · Google review, 2023
★★★★★
I have had several services done by Horizons Unlimited Home Improvement. They have done a great job on my flooring, Deck, Front and back patio and painting. They are excellent on all aspects. The personnel are knowledgable, meticulous and hard workers.
PF
Pamela FarfarasFlooring, deck, patios & painting · Google review, 2025
★★★★★
The work Horizon's did on my deck was excellent! It was done well and with very fair pricing. I highly recommend Horizons if you need any work done around your home.
SS
Sheri SmithDeck · Google review, 2025
Common questions

Straight answers before you call.

Who is Horizons Unlimited Home Improvements?

Horizons Unlimited Home Improvements, Inc. is a family-operated remodeling contractor and registered home builder based at 7387 Washington Blvd., Suite 104, Elkridge, Maryland 21075. The company was founded on August 1, 1993 by William L. Gmeinwieser Sr., who still runs it with Debra K. Gmeinwieser and personally performs most estimates. It holds Maryland Home Improvement Contractor license #16606 and Maryland Home Builder Registration #1369, and is accredited by the Better Business Bureau with an A+ rating.

What areas does Horizons Unlimited serve?

The company works throughout Howard County, Maryland — including Elkridge, Columbia, Ellicott City, Jessup, Savage, Clarksville, Fulton, Highland, Dayton, Glenelg, West Friendship, Woodbine, Lisbon and Marriottsville — and into adjoining Anne Arundel, Baltimore, Carroll, and Prince George's counties. Towns regularly served include Laurel, Hanover, Severn, Odenton, Glen Burnie, Annapolis Junction, Catonsville, Arbutus, Halethorpe, Sykesville and Eldersburg.

Is Horizons Unlimited licensed and insured in Maryland?

Yes. The company holds Maryland Home Improvement Contractor (MHIC) license #16606, issued by the Maryland Department of Labor, and Maryland Home Builder Registration #1369. It is licensed, bonded, and insured. Any Maryland homeowner can verify both at the Maryland Department of Labor before signing a contract — you should do that with every contractor you consider, not just this one.

What is the difference between an MHIC license and a Home Builder Registration?

An MHIC license covers home improvement — work performed on an existing dwelling. A Maryland Home Builder Registration covers building new dwellings for sale. An addition sits on the line between the two: it is a new structure with its own foundation, framing and roof, attached to a house that already exists. A contractor who holds both credentials has demonstrated competence on both sides of that line. Horizons Unlimited holds both.

Does Horizons Unlimited charge for estimates?

No. Estimates are free, and in most cases they are performed by the owner, Bill Gmeinwieser, rather than by a commissioned salesperson. Call 410-796-1333 or 800-673-3034 to schedule one.

How much deposit can a Maryland contractor ask for?

Under Maryland law a home improvement contractor may not collect a deposit greater than one third of the contract price. Your contract must also be in writing and must contain the contractor's name, address and MHIC license number, a description of the work and materials, approximate start and substantial-completion dates, the agreed price, and notice of the Maryland Home Improvement Guaranty Fund. If any of those are missing, do not sign it.

What happens if a Maryland contractor takes your money and does not finish?

If the contractor was licensed when you signed, you may file a claim with the Maryland Home Improvement Guaranty Fund. The Fund can reimburse actual losses up to $30,000 per claimant — or the amount you actually paid the contractor, whichever is less — with a $250,000 cap across all claimants against a single contractor. Claims must be filed within three years of discovering the loss. This protection only exists if your contractor was licensed, which is the practical reason to check a license number before you sign.

Does Horizons Unlimited offer financing?

Yes — financing options are available for qualifying projects. Ask about current terms when you book your estimate. The company also runs periodic promotions, including $1,000 off siding jobs, $500 off roofing, and $100 off windows.

Tell us what you want to change.

Estimates are free, and the owner does them. Call 410-796-1333 or send the form — we cover Howard County and the counties around it.

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