Concrete driveway service in Rockville, Potomac and Bethesda, Maryland.

01 / Local know-howWhy a concrete driveway in Rockville, Potomac and Bethesda is its own kind of job.

Pour a driveway in central Texas and you can almost float it on whatever’s under it. Pour the same slab on a north-facing Potomac lot with Glenelg-Manor clay underneath and three months later it’s a relief map. Most of Montgomery County sits on the same family of high-plasticity soils — they swell when they’re wet, shrink when they’re dry, and freeze hard from late December through February. Concrete driveways in Rockville, Potomac and Bethesda fail for one reason: the ground under them moved. Everything we do is built around stopping that.

Some hyper-local details we plan for on every job:

• Potomac (20854): larger 1- and 2-acre lots off River Road, Falls Road and Persimmon Tree mean long approaches — we engineer 12′ minimum lanes with a 16′ turning apron and a 1.5% crown so storms shed toward the swale, not the garage door.
• Bethesda (20814 / 20816 / 20817): mature trees on streets like Bradley Boulevard and Wilson Lane mean root pruning, lateral root barriers and isolation joints around trunks — or a slab that lifts in five years.
• Rockville (20850 / 20852 / 20853): tighter Potomac Woods and King Farm lots with shared aprons, plus Rockville City permits that run separately from Montgomery County DPS. We pull both.

02 / PricingCost of a concrete driveway in Rockville, Potomac and Bethesda (2026).

The honest 2026 number for a properly built concrete driveway in our service area is $10 to $14 per square foot for a broom finish, with stamped and exposed-aggregate work pushing higher. Below is the same line-item sheet that lands in your inbox after the site walk — nothing baked into “misc.”

Stamped concrete in ashlar slate or herringbone brick adds $5 — $7 / sq ft; exposed aggregate adds $2 — $3. For a deeper breakdown by line item, the journal post The honest cost of a concrete driveway in Maryland — 2026 breakdown walks through the same numbers and the negotiations they hinge on.

03 / Build specThe four things that make a concrete driveway last 30 years in Montgomery County.

1. A 6″ compacted CR-6 sub-base — non-negotiable.

The cheapest line item on a driveway proposal and the only one that actually determines whether it cracks. CR-6 is graded crushed aggregate sized to lock together under compaction. We lay it in two 3″ lifts and run a plate compactor between each. In low-lying spots near Cabin John Creek or Watts Branch, we add a woven geotextile fabric between the clay and the gravel so the two never mix.

2. #4 rebar grid, chaired off the base.

Fiber mesh alone is sidewalk-grade. Welded wire dropped on the dirt does nothing once concrete covers it. Half-inch rebar on 18″ centers, tied into a grid and lifted on chairs so it sits at the slab’s neutral axis — that’s what holds the slab together when the ground freezes 12″ deep in February.

3. 4000 PSI concrete with air entrainment.

Maryland residential standard is 4000 PSI with 5–7% entrained air. The air voids give the slab somewhere to expand into when water inside it freezes — without them, freeze-thaw spalls the surface in two winters. If a quote says 3000 PSI or doesn’t mention air, ask why.

4. Saw-cut control joints on day one.

Concrete is going to crack. Control joints decide where. We saw-cut 1″-deep joints in 8′–10′ squares within 12 hours of finishing — while the slab is still green — so the inevitable shrinkage cracks track under the joint instead of zig-zagging across your driveway.

04 / FinishesBroom, exposed aggregate, and stamped concrete — what changes for Rockville, Potomac and Bethesda homes.

Broom finish concrete driveway

The default and, in Maryland winters, often the smartest choice — the textured surface gives the best traction when it freezes. Pairs cleanly with modern and contemporary homes. +$0.50 / sq ft over base.

Exposed-aggregate concrete driveway

A surface retarder is applied during finishing, then power-washed off the next morning to expose the river-rock or pea-gravel in the mix. The finish complements the brick-and-stone architecture common to older Bethesda and inner Rockville. +$2 — $3 / sq ft.

Stamped concrete driveway

The slab is impressed with a pattern (ashlar slate, herringbone brick, English cobble) while green, then color-hardened and sealed. Most-requested in Potomac estates — reads as paver-style without the joint maintenance. +$5 — $7 / sq ft; reseal every 3 — 5 years.

05 / PermitsWhat Montgomery County and Rockville actually inspect.

Three approvals that catch homeowners off guard on driveway projects in our service area:

• Montgomery County DPS driveway permit for new pours and replacements at the right-of-way apron.
• Stormwater review for impervious surface over the local threshold — tighter in Potomac watershed zones along the C&O Canal and Cabin John Parkway.
• City of Rockville right-of-way permit, separate from county DPS, required inside Rockville municipal boundaries.

We pull all three. If you ever see a Kempf Mill proposal that’s silent on permits, it’s a mistake — flag it.

06 / TimelineTwo weeks from signed proposal to a driveway you can park on.

1. Days 1–3: Demo, haul-off, excavation to 10″ below finished grade.
2. Days 4–5: CR-6 sub-base in two lifts, forms set, rebar grid tied and chaired.
3. Day 6: Pour, finish, saw-cut joints (one long day, weather permitting).
4. Days 7–13: Cure — foot traffic OK after 24 hours, no vehicles until day 7.
5. Day 14: Sealer applied, site cleanup, walk-through with the homeowner.

Rain extends the schedule — we don’t pour into mud.

07 / Concrete vs. paversWhen a concrete driveway is the right answer — and when it isn’t.

Concrete wins on cost-per-square-foot, lifespan, and snow-plowing — you’re looking at a single 30–40 year slab that handles a service vehicle without thinking. Pavers win on aesthetics, repairability, and the ability to lift a section to access utilities. If you’re weighing the two for a Rockville, Potomac or Bethesda property, the side-by-side is worth a read.

Compare service

Paver driveway service in Rockville, Potomac & Bethesda

Belgard, Techo-Bloc and Unilock paver driveways — 2026 pricing, 8″ base spec, and patterns that hold up to MoCo freeze-thaw.

08 / FAQWhat homeowners in Rockville, Potomac and Bethesda ask before they sign.