Elevate Your Outdoors

Sunspace Sunrooms & Outdoor Living Spaces in Maryland

Authorized Dealer & Installer | Custom Design & Build LLC

What Is a Sunroom?

A sunroom is an enclosed living space featuring large windows or clear vinyl panels that let natural light flood in while protecting you from the elements. Unlike a traditional room addition, sunrooms create a seamless connection between your indoor living space and the outdoors—giving you panoramic views of your backyard, garden, or landscape without exposure to weather, insects, or allergens.

For Maryland homeowners, sunrooms are particularly valuable because they extend the time you can comfortably enjoy your outdoor views—protecting you from our humid summers, unpredictable spring weather, brutal pollen seasons, and chilly fall evenings.

Beautiful Sunspace Model 400 sunroom with natural light and comfortable living space

Why Maryland Homeowners Love Their Sunrooms

A sunroom isn't just an addition—it's a lifestyle upgrade.

🦟 Escape the Bugs & Pollen

Maryland's mosquitoes, gnats, and flies can make outdoor time miserable. And if you suffer from seasonal allergies, our pollen seasons are brutal. A sunroom lets you enjoy the outdoors without the sneezing, itchy eyes, bug bites, and constant swatting.

🌡️ Beat the Heat & Humidity

Maryland summers are notoriously hot and sticky. With proper ventilation (up to 75% with Sunspace WeatherMaster windows!) and a portable AC unit, your sunroom becomes a comfortable retreat where you can enjoy your backyard views without breaking a sweat.

🌧️ Enjoy Unpredictable Weather—From Inside

Our spring and fall seasons are beautiful but unpredictable. One day it's 70°F and sunny; the next it's 50°F and raining. With a sunroom, weather changes don't ruin your plans. Watch the rain fall, enjoy the spring blooms, take in the fall foliage—all from comfort.

☀️ Year-Round Natural Light

Maryland winters can feel gray and dark. A sunroom floods your home with natural light even on cloudy days, boosting your mood and reducing the need for artificial lighting. Add a fireplace or electric heater, and you've got a cozy winter retreat.

🛡️ Protection from Harmful UV Rays

Sunspace's ViewFlex vinyl glazing blocks 99% of harmful UV rays while still letting in beautiful natural light. Enjoy the sunshine without the sunburn or the damage UV rays can cause to your furniture and flooring.

💰 No Impact on Your Home's HVAC

Sunspace sunrooms aren't connected to your existing heating and cooling system, so you won't see increased utility bills from your central air or furnace. You control the climate independently with portable units, fireplaces, or space heaters.

Sunspace Room Models

As an authorized Sunspace dealer, we offer four models to fit your needs, preferences, and budget.

★ BUDGET-FRIENDLY STARTING POINT ★

Model 100 – Screen Room

Sunspace Model 100 Screen Room - budget-friendly outdoor living

Want to start enjoying your outdoor space without the bugs—but not ready for a full sunroom investment? The Model 100 Screen Room is the perfect entry point. Enjoy the outdoors without mosquitoes, gnats, and flies annoying you.

The best part? The Model 100 can be upgraded later to a Model 200 WeatherMaster sunroom when you're ready. Start with screens now, and add vinyl window panels down the road—protecting your investment while giving you flexibility to upgrade on your timeline.

Key Features:

  • Full Ventilation: 100% open airflow when you want that outdoor breeze
  • Bug-Free Enjoyment: High-quality screens keep insects out while letting fresh air in
  • Aluminum Frame Construction: Durable, low-maintenance aluminum in a variety of colors
  • Perfect Under Existing Roofs: Ideal for porch and patio conversions
  • Upgradeable: Can be converted to Model 200 with WeatherMaster windows later

Best For: Homeowners who want bug-free outdoor enjoyment at a lower price point, with the option to upgrade to a full sunroom in the future.

Typical Cost: $15,000 – $35,000 depending on size

★ OUR MOST POPULAR SUNROOM ★

Model 200 – WeatherMaster Vinyl Sunroom

Sunspace Model 200 WeatherMaster Vinyl Sunroom - our most popular sunroom

Our most popular sunroom! The Model 200 features the versatile WeatherMaster™ 4-Track Vinyl Window System exclusively from Sunspace. This model combines the breezy, open-air feeling of a screen room with the comfort, convenience, and safety of an enclosed porch.

Key Features:

  • WeatherMaster™ 4-Track Vinyl Windows: Infinitely adjustable—stack up, stack down, or bunch in the middle
  • 75% Ventilation: Windows slide effortlessly for maximum airflow when you want it
  • ViewFlex Vinyl Glazing: More durable than glass, blocks 99% of UV rays, tested for 40+ years
  • 4 Tint Colors: Clear, Smoke Grey, Dark Grey, and Bronze
  • 2" Foam Panels: Sturdy construction with aluminum extrusions
  • Full Fiberglass Mesh Screens: Integrated into the window system
  • Ideal for Porch Conversions: Easily installed under existing roofs

Best For: Homeowners who want maximum ventilation control and the open-air feeling of a screen room with weather protection when needed.

Typical Cost: $40,000 – $85,000 depending on size and features

Model 300 – 3-Season Glass Sunroom

Sunspace Model 300 Glass Sunroom with cathedral ceiling

A bright addition to any home! The Model 300 features single-glazed glass windows with aluminum-framed double roller windows that provide ventilation from both sides—no fixed side, both sashes operate!

Key Features:

  • 2" Extruded Insulated Aluminum Pillars: Strength, stability, and virtually maintenance-free
  • Single-Glazed Glass Windows: Crystal-clear views with durable glass
  • Double Roller Windows: Both sashes operate for flexible ventilation
  • Integrated Gutter System: Heavy-duty extruded aluminum gutters and fascia
  • Flexible Roof Options: Cathedral ceiling, contemporary studio pitch, acrylic, or insulated
  • ThermaDeck Compatible: Add insulated flooring for enhanced comfort

Best For: Homeowners who prefer the look and feel of traditional glass windows with the strength of aluminum construction.

Typical Cost: $40,000 – $85,000 depending on size and features

★ MAXIMUM COMFORT & INSULATION ★

Model 400 – Insulated Sunroom

Sunspace Model 400 Insulated Sunroom - maximum comfort and insulation

For homeowners who want maximum comfort and insulation, the Model 400 is a fully insulated sunroom built for extended seasonal use. This model offers superior thermal performance for those who want to enjoy their sunroom even in more extreme temperatures.

Key Features:

  • 3" High-Density Foam Panels: Superior insulation for thermal walls
  • 3" Heavy-Gauge Aluminum Extrusions: Strong support for wind and snow loads
  • Double-Glazed Low-E Argon Gas Windows: High-efficiency glass for protection from elements
  • Commercial-Grade Thermal Breaks: Minimizes condensation and heat loss
  • Thermal Roof System: Enhanced wind resistance and insulation
  • ThermaDeck Options: 4-1/2" (R17), 6-1/2" (R26), or 8-1/4" (R35) insulated flooring

Best For: Homeowners who want maximum thermal performance and plan to add dedicated heating/cooling for extended seasonal use—even into winter with a fireplace or heater.

Typical Cost: $90,000 – $100,000+ for a 16x16 with electric, PTAC, and flooring

Quick Model Comparison

Feature Model 100 Model 200 Model 300 Model 400
Type Screen Room Vinyl Sunroom Glass Sunroom Insulated Sunroom
Window Type Screens only ViewFlex vinyl 4-track Single-glazed glass Double-glazed Low-E Argon
Ventilation 100% (full open) Up to 75% Double roller windows Operable windows
Weather Protection Bugs only Full (when closed) Full (when closed) Full + insulated
UV Protection None 99% UV blocked Standard glass Low-E coating
Upgradeable Yes → Model 200
Typical Cost $15K – $35K $40K – $85K $40K – $85K $90K – $100K+
Best For Budget-friendly start Max ventilation & value Traditional glass look Max insulation

Important: Sunspace sunrooms (Models 200, 300, 400) are NOT connected to your home's HVAC system. All use independent climate control options like portable AC, fireplaces, electric heaters, or PTAC units.

Heating & Cooling Options

One of the best things about a Sunspace sunroom is the flexibility in climate control.

Key Point: Sunspace sunrooms are NOT connected to your home's HVAC system. This means you won't see increased utility bills from your central air or furnace. Instead, you control the climate independently with these options:

❄️ Cooling Options

  • Portable AC Units: Easy to set up, no permanent installation. Roll it in when needed.
  • Ceiling Fans: Great for air circulation on mild days
  • WeatherMaster Ventilation: Up to 75% airflow when panels are open (Model 200)
  • Ductless Mini-Split: Dedicated cooling without connecting to central HVAC

🔥 Heating Options

  • Built-In Fireplaces: Electric or gas—adds warmth, ambiance, and a focal point
  • Electric Heaters: Portable or wall-mounted for instant warmth
  • Infrared Heaters: Energy-efficient, warms objects directly
  • PTAC Units: Both heating AND cooling in one self-contained system (hotel-style)

Additional Comfort Features

  • ThermaDeck Insulated Flooring: Pre-manufactured floor deck available in R17, R26, or R35 insulation levels. Ready for carpet, tile, laminate, or hardwood.
  • Insulated Roof Panels: Helps moderate temperatures and reduces noise from rain
  • Lighting Options: Recessed lights, pendant fixtures, or ceiling fan/light combos

The Bottom Line: With the right heating and cooling options, many of our customers use their sunrooms year-round—even enjoying them in winter with a fireplace or heater!

Screen Room & Sunroom Pricing

We believe in transparent pricing. Here are typical cost ranges for projects in Harford, Baltimore, and Cecil Counties.

Project Type Cost Range Notes
Model 100 Screen Room (12x14) $15,000 – $25,000 Budget-friendly entry point
Model 100 Screen Room (16x16) $20,000 – $35,000 Upgradeable to Model 200 later
Model 200 or 300 (12x14) $40,000 – $55,000 Standard features
Model 200 or 300 (16x16) $60,000 – $70,000 With insulated floor & ceiling
Model 200 or 300 (14x20) $70,000 – $85,000 Larger room with upgrades
Model 400 Insulated (16x16) $90,000 – $100,000+ With electric, PTAC, flooring
Deck-to-Sunroom Conversion $50,000 – $80,000 Depends on deck condition

Factors That Affect Pricing

Size: Larger rooms require more materials and labor
Model: Screen rooms cost less; Model 400 costs more than 200/300
Foundation: Building on existing deck vs. new construction
ThermaDeck: Insulated floor options add comfort and cost
Electrical: Outlets, lighting, ceiling fans, heater hookups
Climate Control: Fireplaces, PTAC units, heaters

Why We Build with Sunspace

North America's Premier Sunroom Systems

📐

Custom-Fit Manufacturing

Every Sunspace product is manufactured to fit your specific space—no generic sizes or awkward gaps. Perfect fit guaranteed.

🛡️

WeatherMaster™ Technology

Up to 75% ventilation, 99% UV blockage, and virtually unbreakable ViewFlex vinyl that's safer than glass.

🇺🇸

Made in North America

Designed, engineered, and manufactured in North America. Faster lead times, better quality control.

🔧

Low Maintenance

Aluminum and vinyl systems stay beautiful for decades with minimal upkeep. Occasional cleaning is all that's required.

⬆️

Modular & Upgradeable

Start with a screen room, upgrade to a three-season room later. Sunspace systems are designed with flexibility in mind.

40+ Years Proven

ViewFlex vinyl glazing has been tested for over 40 years and maintains clarity and performance.

How We Build Your Screen Room or Sunroom

1

Free Consultation

We start with a no-obligation conversation to discuss your vision, answer questions, and understand your project. Completely free with no pressure.

2

Custom Design & Proposal

We create detailed designs, recommend the right Sunspace model, provide complete pricing with no hidden fees, and financing options if needed.

3

Permits & Approvals

We handle the entire permit process—preparing drawings, submitting applications, and ensuring your project meets all Maryland building codes.

4

Construction & Installation

Custom-manufactured products ensure efficient, precise installation. Most projects complete in 4-8 weeks from permit approval.

5

Final Walkthrough & Warranty

We conduct a thorough walkthrough, explain how to operate your new room, provide warranty information, and ensure you're completely satisfied.

Converting Your Deck into a Sunroom

One of our most popular projects is converting an existing deck into a screen room or sunroom. If you have a deck that's underused because of weather, bugs, or maintenance hassles, a conversion can transform it into your favorite room in the house.

💰

Cost Savings

Building on existing structure reduces foundation and framing costs

⏱️

Faster Timeline

Less construction means you're enjoying your sunroom sooner

🏡

Better Use of Space

Transform an underused deck into living space you'll use daily

📈

Increased Value

Enclosed living space is more valuable than open deck space

Can my deck be converted? Most well-built decks can be converted. We'll evaluate structural integrity, foundation, condition, and code compliance during a site visit. Contact us to discuss your deck.

Serving Central Maryland

Harford County

Bel Air, Fallston, Forest Hill, Abingdon, Aberdeen, Churchville, Havre de Grace, Edgewood, Kingsville, Street

Baltimore County

Towson, Perry Hall, White Marsh, Parkville, Timonium, Pikesville, Owings Mills, Randallstown, Middle River, Dundalk

Cecil County

Elkton, North East, Rising Sun, Perryville, and surrounding communities

We also serve select areas of Pennsylvania including York, Lancaster, Harrisburg, West Chester, and Gettysburg.

Frequently Asked Questions

Can I start with a screen room and upgrade later?

Absolutely! The Model 100 Screen Room is designed to be upgradeable to the Model 200 WeatherMaster sunroom. This is a great option if you want to start enjoying bug-free outdoor time at a lower price point, then add weather protection later when it fits your budget.

Can I use my sunroom in the winter?

Yes! With the right heating options—like a built-in fireplace, electric heaters, or a PTAC unit—many of our customers enjoy their sunrooms well into the colder months. The space won't be connected to your home's HVAC, but independent heating can make it comfortable for extended seasonal use.

What's the difference between Model 200 and Model 300?

Model 200 uses WeatherMaster vinyl 4-track windows that offer up to 75% ventilation and come in 4 tint colors. Model 300 uses single-glazed glass with double roller windows. Both are excellent choices—it comes down to whether you prefer vinyl (more ventilation, UV blocking) or traditional glass.

Is ViewFlex vinyl as good as glass?

ViewFlex vinyl glazing is actually more durable than glass—it won't shatter if impacted. It also blocks 99% of harmful UV rays, which glass does not do without special coatings. The vinyl has been tested for over 40 years and maintains clarity and performance.

Do I need a permit?

Yes. Both screen rooms and sunrooms require building permits in Harford, Baltimore, and Cecil Counties. We handle the entire permit process for you as part of our service.

Can you build on my existing deck?

In many cases, yes. Sunspace rooms can be installed directly onto existing decks, patios, and even under previously constructed roofs. We'll evaluate your deck's structure and condition during a site visit.

What is ThermaDeck?

ThermaDeck is Sunspace's pre-manufactured insulated floor deck system. It provides 25% better insulation than traditional flooring and comes ready to receive carpet, tile, laminate, or hardwood. Available in R17, R26, or R35 insulation levels.

Are Sunspace sunrooms connected to my home's HVAC?

No. Sunspace sunrooms (Models 200, 300, 400) use independent climate control—not your home's heating and cooling system. This keeps your existing utility bills separate. You control the sunroom's temperature with portable AC, ceiling fans, fireplaces, electric heaters, or PTAC units.

Do you offer financing?

Yes. We offer flexible financing options with low monthly payments and competitive rates. Learn about financing options.

Why Maryland Homeowners Choose Custom Design & Build LLC

✓ Authorized Sunspace Dealer

Factory-trained on the complete Sunspace product line. Genuine products with full manufacturer warranties.

✓ Local, Licensed & Insured

MHIC #91686. We know local building codes, permit processes, and what works best in Maryland's climate.

✓ Complete Project Management

From design through walkthrough, we handle everything. One team, one seamless experience.

✓ Transparent Pricing

No surprises, no hidden fees, no bait-and-switch. Detailed proposals that spell out exactly what's included.

What Our Customers Say

"We started with a wooden deck and screened enclosure that was rarely used and ended up with a beautiful composite deck and sunroom that we enjoy daily."

— Deborah Thomas

"Loved working with Mark and his guys! Love our new sunroom even more! Mark was open and honest from the very first call and never salesy."

— Eric Schuster

Read more customer reviews →

Ready to Add a Sunroom to Your Maryland Home?

Your dream sunroom is closer than you think. Whether you want to start with a budget-friendly screen room or go straight to a fully-featured sunroom, we're here to help you find the perfect solution.

Request Your Free Consultation

Custom Design & Build LLC
Authorized Sunspace Dealer & Certified Installer
2817 Belair Rd, Fallston, MD 21047 | MHIC #91686
Serving Harford County | Baltimore County | Cecil County