Deck and patio renovation guide for Maryland homeowners. Compare repair, re-decking, and rebuild costs, plus Anne Arundel County permit basics. Request a free estimate from JLG Builds.
Deck and Patio Renovation in Maryland
If your deck feels spongy underfoot, your railings wobble, or your patio has cracked and settled, you are weighing the same decision many Maryland homeowners face each spring:
- Repair
- Resurface
- Rebuild
This guide walks through:
- How deck and patio renovation actually works
- What drives the cost
- The questions worth asking before you sign anything
Repair, Re-Deck, or Full Rebuild
Start With the Structure
Before you think about boards or colors, the first question is whether the structure under your deck is sound.
This single answer changes the budget more than almost any other choice.
The three levels of deck work
Repair
- Replacing a few rotten boards
- Tightening or resetting railings
- Swapping failed fasteners
This is the least expensive path and makes sense when the framing, posts, and footings are in good shape.
Re-decking
Keeping the existing frame and replacing the surface boards and often the railing. This can be a strong value when the joists, ledger, posts, and footings are rot-free and code-compliant.
Full rebuild
Replacing the structure down to the footings.
This is the right call when framing or footings show rot, when the deck has a history of repeated failures, or when the frame cannot support the material you want.
Note:
We do not assess a deck’s condition from photographs.
A short on-site look at the ledger connection, the footings, and the framing tells us far more than any picture, and it is the only responsible way to recommend a scope.
What Deck Renovation Costs in 2026
Nationally, replacing a deck in 2026 runs roughly $25 to $60 per square foot installed, with pressure-treated wood at the low end and premium PVC at the top.
The table below shows planning ranges by size (this is not as a bid).
| Deck size | Pressure-treated wood | Composite or PVC |
|---|---|---|
| 12 x 12 (144 sq ft) | $3,600 to $8,600 | $5,000 to $11,000 |
| 14 x 20 (280 sq ft) | $8,400 to $14,000 | $9,800 to $19,600 |
| 16 x 20 (320 sq ft) | $9,600 to $16,000 | $13,000 to $24,000 |
| 20 x 20 (400 sq ft) | $12,000 to $20,000 | $16,000 to $28,000 |
Ranges reflect 2026 national data. Regional labor rates, site access, and existing conditions shift these figures.
What moves the number up
Material tier
Pressure-treated pine is the most affordable surface.
Cedar and redwood cost more.
Composite and PVC cost more still, but ask less maintenance over their life.
Height and access
A ground-level deck on stable soil is the least expensive.
Once a deck sits more than about 30 inches above grade, it needs deeper footings, larger beams, and more labor.
Stairs and railings
A stair run and railing around multiple sides each add meaningfully to the total.
Tear-off and disposal
Removing and hauling an old deck is a real line item, commonly a few thousand dollars depending on size.
Footings and the ledger
Frost-depth footings and proper ledger flashing protect the structure and the house.
They are not the place to cut corners.
Deck or Patio? Understanding the Trade-Off
Some homeowners come to us wanting to replace a failing wood deck with a patio, or the reverse.
The two are different structures with different budgets, and neither is simply better.
Decks
- Elevated and framed, so they suit sloped yards and second-story access off a kitchen or living room.
- Higher cost per square foot because of framing, footings, and railings.
- Wood decks need regular cleaning and periodic staining. Composite and PVC ask less upkeep.
Patios
- Sit at grade on a prepared base, using pavers, poured concrete, or natural stone.
- Generally lower cost per square foot than a framed deck of the same size.
- Work best on ground that is already fairly level, and they depend on good drainage to stay put through freeze-thaw cycles.
Maryland and Anne Arundel County: Permits and Site Realities
In Anne Arundel County, a building permit is required for essentially all deck construction attached to a home.
A common exemption is a freestanding deck under 200 square feet and under 30 inches above grade that is not attached to the house.
Because rules vary and change, the authority having jurisdiction makes the final call on any given project.
A few local realities shape outdoor projects in our area:
Critical Area review
Decks outside the Critical Area on public water and sewer can often be reviewed quickly.
A deck within the Chesapeake Critical Area, or on a well and septic lot, typically takes longer to review.
Inspections
Expect footing, framing, and final inspections.
Footings should not be framed over until the footing inspection passes.
Miss Utility
Maryland law requires calling Miss Utility before digging so underground lines are marked.
Setbacks, septic, and HOA
Property-line setbacks, required clearances from wells and septic systems, and homeowners association rules can all affect where and how a deck is built.
How we describe our role:
When permit coordination is included in a contract, JLG can identify the permits typically required for the approved scope and help with applications and inspections.
We do not guarantee permit approval, inspection results, or a fixed permit timeline, because those decisions rest with the county.
How a Responsible Deck or Patio Project Runs
Every project is different, so the sequence below is a general picture rather than a fixed script.
It gives you a sense of the steps a careful outdoor renovation tends to follow:
- Initial conversation about goals, how you use the space, and a rough budget range.
- On-site look at existing conditions, including the ledger, footings, framing, drainage, and grade.
- Preliminary scope and material discussion.
- A written estimate defining what is included, what is excluded, allowances, and a payment schedule.
- Permit coordination when included, plus scheduling.
- Site protection, demolition, and construction.
- County inspections at the required stages.
- Punch list, final walkthrough, and warranty information.
Why Hire JLG Builds
JLG Builds is a residential remodeling company based in Gambrills, Maryland, serving homeowners across Anne Arundel County and the greater Baltimore-Washington area.
We handle interior and exterior projects:
Our approach starts with your existing home.
- We look at what you have
- Explain what we find
- Help you choose options that fit how you live
You get a defined scope, a written estimate, clear product selections, and regular updates as the work moves forward.
Request a Free Estimate. Call JLG Builds at 410-721-9619 or reach us through the contact form on our website.
Frequently Asked Questions about what Maryland homeowners need to know regarding deck and patio renovations
How much does it cost to redo a 20×20 deck?
A 20×20 deck is 400 square feet, which is a large outdoor space. As a 2026 planning range, expect roughly $12,000 to $20,000 in pressure-treated wood and $16,000 to $28,000 in composite or PVC, including materials and labor. If your existing frame is sound and only the boards and railing need replacing, board-only re-decking can be considerably less, often in the range of $6,000 to $14,000 for the surface. At this size most homeowners also add railing on two or more sides, a stair run, and lighting, so budget for those from the start. The only way to know your number is an on-site assessment.
What is the 3/4/5 rule for decks?
The 3-4-5 rule is a layout method builders use to confirm that a deck corner is a true 90-degree angle before framing begins. It is the Pythagorean theorem turned into a jobsite shortcut. Measure 3 feet along one side of a corner and 4 feet along the other. When the diagonal between those two marks is exactly 5 feet, the corner is square.
For larger decks, carpenters use the same ratio scaled up, such as 6-8-10 or 9-12-15, for more accuracy over a longer run. A frame that is even slightly out of square shows up later as crooked boards, gaps at the ledger, or stairs that lean, which is why squaring the frame first matters. Note that this is a layout technique, not a rule about permits or how far apart boards should be spaced.
How much does a 14×20 deck cost to build?
A 14×20 deck is 280 square feet. Using 2026 per-square-foot ranges, a new build commonly lands around $8,400 to $14,000 in pressure-treated wood and roughly $9,800 to $19,600 in composite, materials and labor combined. Height above grade, stairs, railing style, footing depth, and site access can push a project toward the higher end or beyond. These are planning figures, not a quote.
How much does it cost to replace a deck with a patio?
This is really two costs added together: removing the old deck, then building the patio. Deck tear-off and disposal commonly runs a few thousand dollars depending on size and height. The patio itself is usually priced per square foot and depends heavily on material.
- Gravel: among the least expensive surfaces, roughly $2 to $8 per square foot.
- Poured concrete: roughly $5 to $15 per square foot installed.
- Paver patio: commonly $10 to $17 per square foot installed.
- Natural stone: higher, often $12 to $50 or more per square foot.
Because a patio sits at grade, converting from a deck also involves grading and drainage so water moves away from the house. A level, well-drained site keeps the cost down. A sloped or poorly draining site adds excavation and drainage work. We can price the removal and the new patio as clearly separated line items so you see where the money goes.
What is the most expensive part of a deck?
For a professionally built deck, labor is usually the single largest cost, often somewhere between half and two thirds of the total. Framing, footings, stairs, and railing installation all take skilled time, and complex or elevated designs take more of it.
On the materials side, the decking surface and the railing system are the biggest drivers. Premium PVC boards and upgraded railings such as aluminum, cable, or glass can swing the price by thousands of dollars for the exact same footprint. Structural work that most homeowners never see, such as frost-depth footings and proper ledger flashing, also adds cost, and it is the part you least want to economize on because it carries the deck and protects your house.
What is the cheapest way to redo a patio?
If the existing surface is structurally fine and you mainly want it to look and feel better, the least expensive routes are cosmetic. Cleaning and staining or painting a concrete slab, using a concrete resurfacer to hide cracks, and adding an outdoor rug, potted plants, and lighting can refresh a patio for a modest sum.
If you are replacing the surface, gravel and basic large-format pavers over a properly prepared, level base are typically the most affordable materials. The savings assume the ground is level and drainage is already sound. If the base has failed or water pools, skipping the groundwork tends to cost more later. A short conversation about the condition of your slab or base usually clarifies whether a cosmetic refresh or a full replacement is the better value.