MHIC #16606 MD Home Builder #1369 4.5★ (40) BBB Accredited A+ Family-run since 1993
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Additions & remodeling in western Howard County

Glenelg, West Friendship, Woodbine, Lisbon, Dayton, Highland and Fulton. Rural zoning, well and septic, and driveways that decide what equipment can reach the house.

Reviewed by Bill Gmeinwieser, President · MHIC #16606 · MD Home Builder #1369 · Updated September 2026
Additions & remodeling in western Howard County — Horizons Unlimited Home Improvements, Howard County MD
Direct answer

Horizons Unlimited Home Improvements serves western Howard County — Glenelg, West Friendship, Woodbine, Lisbon, Dayton, Highland and Fulton, Maryland — with additions, in-law suites, kitchens, bathrooms, roofing, siding, windows and custom homes. MHIC #16606, Maryland Home Builder Registration #1369, BBB A+, building in the county since 1993. Three things make this end of the county different from Columbia or Elkridge: properties sit in rural zoning districts such as RC (Rural Conservation) and RR (Rural Residential), nearly everything is on well and septic, and site access is a genuine cost factor. Free estimates: 410-796-1333.

Rural zoning is a different set of rules

Howard County's western districts — RC (Rural Conservation) and RR (Rural Residential) among them — carry their own dimensional standards and, in some cases, agricultural preservation considerations. Large lots mean setbacks rarely block an addition, but they are not the only question. Some parcels sit under preservation easements or subdivision restrictions that limit what may be built and where, and those live in the deed rather than in the zoning map.

If you are not certain what applies to your parcel, that is the first thing to establish. It is a records exercise, and it takes an afternoon rather than a design cycle.

Well and septic, again — and it matters more out here

Nearly every property in this part of the county is on a private well and an on-site septic system. As on the Clarksville page, the binding rule is that septic capacity is calculated from bedroom count, so any addition or basement finish that adds a bedroom generally requires approval through the Howard County Bureau of Environmental Health's bedroom application process. Where a system has to be expanded, percolation testing and a design review come into it, and the lot has to physically support a replacement or reserve field.

Establish this before design. Bureau of Environmental Health: 410-313-1771.

Site access is a real line item

This is the one nobody mentions in a brochure. Out here the house is often several hundred feet from the road, down a gravel or single-lane drive, sometimes over a culvert or a soft shoulder.

  • Can an excavator and a dump truck reach the work? If not, footings get dug by hand and spoil gets moved by wheelbarrow, and the foundation line on your estimate changes accordingly.
  • Can a materials delivery turn around? Roof and siding loads come on big trucks. A drive they cannot navigate means staging and double-handling.
  • Will the driveway survive it? Heavy equipment on a gravel drive after a wet week is how a project quietly adds a driveway repair to its scope. Better to agree what happens there before, not after.

An honest estimator walks the drive, not just the house. That is part of why the owner does the estimates here.

What we are usually asked to build

Primary-suite and family-room additions, in-law and multigenerational suites, sunrooms and screened porches, large roof and siding packages on farmhouses and 1980s–2000s colonials, and — under Maryland Home Builder Registration #1369 — custom homes on owned lots, including the site development and permitting that goes with them.

In Glenelg, West Friendship, Woodbine & Lisbon

What we build here.

The same ten services, under one Maryland license — MHIC #16606 and Home Builder Registration #1369.

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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Q&A

Glenelg, West Friendship, Woodbine & Lisbon: questions and answers

What zoning applies to homes in western Howard County?

Much of western Howard County sits in rural districts including RC (Rural Conservation) and RR (Rural Residential), each with its own dimensional standards. Some parcels additionally carry agricultural preservation easements or subdivision restrictions recorded in the deed that can limit what may be built. Confirm both the zoning district and any recorded restrictions on your specific parcel before design.

Do I need Health Department approval to add a bedroom in Glenelg or Woodbine?

If the property is on septic — and most out here are — then generally yes. Septic capacity is permitted by bedroom count, so adding a bedroom through an addition or a basement finish requires going through the Howard County Bureau of Environmental Health's bedroom application process. Where the system must be expanded, percolation testing and design review follow. Call 410-313-1771 before you design.

Will a long gravel driveway affect the cost of my addition?

It can, and it is better discussed up front than discovered. Access determines whether excavation is done by machine or by hand, whether materials can be delivered to the work or have to be staged and double-handled, and whether the drive itself needs repair after heavy equipment has used it. We walk the driveway as part of the estimate for exactly this reason.

Do you build custom homes in western Howard County?

Yes. Horizons Unlimited holds Maryland Home Builder Registration #1369 and builds custom homes from concept to certificate of occupancy, including site development and permitting, on lots the client owns. That is the same credential that makes the company a sound choice for structural additions.

Planning something in Glenelg, West Friendship, Woodbine & Lisbon?

Free estimate, done by the owner, who will tell you honestly what the local approvals path looks like before you spend anything on design.

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