Belgard vs Techo-Bloc vs Unilock for Alpharetta Curb Appeal — The Luxury Subdivision Test

Three premium paver lines — Belgard Dimensions with Artforms, Techo-Bloc Blu 60 Borealis, and Unilock Beacon Hill Flagstone — land on every Alpharetta driveway bid above $40,000. They are not interchangeable. Side by side, at Windward gate or inside Country Club of the South, each one wins on a different axis and loses on another.

This is the comparison we run on the iPad when a homeowner in Hutchinson Farm asks what the neighbor across the cul-de-sac used. The short answer: color tone, ARB approval speed, and long-term resale pull are three different scorecards. The long answer runs the whole piece below.

We laid it out as a three-column grid before writing a word. Belgard wins on color depth and brand recognition inside Country Club of the South. Techo-Bloc wins on gray-palette selection and matches the existing neighborhood standard throughout Windward. Unilock wins on natural-stone aesthetic for homes near Avalon and the downtown historic district. All three are engineered above the builder-grade concrete paver line you see at big-box yards, and all three are installed at prices between $46 and $74 per square foot depending on base prep and edge detail.

The Alpharetta Piedmont Clay Problem (Why Paver Selection Matters More Here)

Alpharetta sits on a gently rolling ridge-and-valley along the GA-400 corridor at roughly 1,100 ft of elevation. The soil under almost every yard in 30004, 30005, 30009, and 30022 is Cecil-series Piedmont clay with pockets of Appling sandy loam in the older farm-conversion tracts on the north side toward Milton. Cecil clay has moderately high shrink-swell behavior — meaning it expands when it absorbs the ~51 inches of annual rainfall and contracts through the summer dry stretches when highs run 89–94°F.

That soil behavior is the reason paver selection matters more in Alpharetta than in the sandy-loam counties south of I-20. A paver driveway installed on insufficient base depth over Cecil clay will telegraph the shrink-swell movement within two winters. We see it constantly on repair calls — 2007-era driveways heaved into diagonal ridges because the original installer put down four inches of crusher run instead of eight to ten.

USDA Zone 8a puts Alpharetta in the range of 20 freeze events per year. Each freeze-thaw cycle drives moisture deeper into improperly joint-stabilized pavers. The three premium lines we’re comparing differ materially in how they hold joints, because their surface textures and chamfer profiles channel water differently.

Topography matters on the bid too. Residential lots along the GA-400 corridor average 3 to 6 feet of grade change across the backyard, and even a seemingly flat driveway approach on Haynes Bridge Road or Windward Parkway often drops an inch per ten feet. That grade is enough to concentrate runoff at the bottom edge of a paver run. Belgard, Techo-Bloc, and Unilock all require a different edge-restraint strategy at a 2%-plus pitch. We spec a full concrete haunch on any run over 1,000 square feet; spike-in plastic edging is for sidewalk work, not luxury-subdivision driveways.

Belgard Dimensions with Artforms — The CCOS Standard

Belgard Dimensions is the premium architectural paver line built on Oldcastle’s Artforms texturing process — a secondary surface-finishing pass that produces deeper, more saturated color tones than the base Belgard product. Installed in Alpharetta, Dimensions runs $52 to $68 per square foot fully loaded: product, pallet freight from the Belgard distributor in Kennesaw, excavation, base, bedding, cutting, polymeric joint sand, and a three-sided concrete edge restraint.

The color depth is the single biggest reason Belgard wins on Country Club of the South driveways. The CCOS Architectural Review Board has approved Belgard tones — specifically the Victorian, Toscana, and Bergerac series — in enough past applications that homeowners submitting a Dimensions color from the same family typically clear the 3-to-4-week review window without a resubmission. That matters when you are trying to get concrete poured before the next rain.

Belgard also carries brand equity with the CCOS buyer demographic. Appraisers in the Fulton County corridor recognize the Belgard name from the Coastal Living and Southern Living showcase homes. When a CCOS property goes up for resale at $2.1M to $3.5M, the listing photos captioned “Belgard paver motor court” do measurable work. Techo-Bloc, despite being mechanically equivalent or superior on several specs, does not carry the same Southern-US consumer recognition. That gap closes every year but it is not closed yet in 2026.

Service life on Dimensions, per Belgard’s published Artforms durability testing, is 35 years before color fade exceeds the threshold that triggers a warranty discussion. We’ve pulled up 22-year-old Belgard installations in North Fulton and the color loss at the surface was negligible — the fade was all in the joint sand, not the paver.

Where Belgard loses on the Alpharetta scorecard

Belgard’s gray palette is the weakest of the three lines. If your roof is a cool charcoal and your stone veneer is a blue-gray field, Belgard’s grays trend slightly warm and you will fight the color match. This is the specific reason Windward homes — which were master-planned with a consistent cool-gray palette across hundreds of homes — more often land on Techo-Bloc. Second weakness: Belgard’s chamfer is wider than Techo-Bloc’s 60-series, which reads as a more traditional aesthetic. For contemporary architecture near Avalon, the chamfer can look dated against flat-roof modern lines.

The third weakness is thermal behavior in direct summer sun. Belgard’s deeper-saturated Artforms tones absorb more solar radiation than Techo-Bloc’s lighter Shale Grey. On a 94°F July afternoon at a west-facing CCOS motor court, a dark Belgard surface can run 20 to 25 degrees hotter underfoot than a Techo-Bloc Shale Grey alternative. It is not a structural issue — both pavers are rated well above any residential thermal cycling spec — but barefoot homeowners notice at the pool deck transition. If the driveway pavers are continuing as the pool deck, we often recommend a lighter Belgard color family, or pivot to Techo-Bloc entirely to protect the pool deck experience.

Techo-Bloc Blu 60 Borealis — The Windward Match

Techo-Bloc Blu 60 Borealis is a 60 mm architectural paver with the Borealis surface finish — a micro-pitted, semi-gloss finish that differs meaningfully from Techo-Bloc’s flagship Blu Grande. Installed in Alpharetta it runs $46 to $62 per square foot, roughly six to eight dollars cheaper per square foot than Belgard Dimensions at the same specification.

The color range is where Techo-Bloc separates. The Shale Grey, Greyed Nickel, and Onyx Black tones across the Blu 60 line cover the entire cool-gray spectrum needed to match Windward’s neighborhood standard. Homes in Windward, Deerfield, and Haynes Manor sit inside HOAs that effectively set a palette corridor through approved past installs. Techo-Bloc’s gray selection hits that corridor on three to four distinct tones; Belgard hits it cleanly on one.

Technically Blu 60 Borealis runs a tighter chamfer — closer to a 2 mm edge instead of Belgard’s 4 mm — which reads as more contemporary and lets the joint line disappear visually from ten feet away. The paver itself is a 60 mm thickness rated for residential driveway loading to standard Piedmont spec. Service life per Techo-Bloc’s published data runs 30 years before aesthetic degradation triggers warranty review. Color retention is equivalent to Belgard Artforms; the five-year service-life gap is largely about surface abrasion on the Borealis finish, not color fade.

Techo-Bloc’s weakness in Alpharetta is distributor coverage. The closest full-inventory yard is outside Metro Atlanta, so specialty color matches on tight timelines can run four to six weeks on backorder. Belgard’s Kennesaw distributor is twenty-five minutes from most Alpharetta zip codes and typically carries product on the ground. If you’re trying to pour in a specific window — say, before a spring pool commissioning at Hutchinson Farm — Belgard is the safer logistics bet even when Techo-Bloc would be the better color match.

Unilock Beacon Hill Flagstone — The Avalon-Adjacent Pick

Unilock Beacon Hill Flagstone is the premium natural-stone-look paver in this comparison and the most expensive of the three at $58 to $74 per square foot installed in Alpharetta. The product is manufactured to mimic irregular flagstone — variegated texture, soft-broken edges, three-plane surface variation — at a fraction of the cost and none of the sorting headaches of real Tennessee crab orchard stone.

Beacon Hill’s natural aesthetic is the reason it’s winning the luxury townhome infill near Avalon and the custom infill lots in the downtown Alpharetta historic district. Those homes are architecturally leaning toward a softer, Hamptons-adjacent aesthetic — shingle siding, painted brick, cedar roofs on the dormers. A uniform-repeat paver like Belgard Dimensions or Techo-Bloc Blu 60 reads too manufactured against that vocabulary. Beacon Hill’s irregular pattern disappears into a natural-looking walking surface.

Service life per Unilock’s published warranty runs 30 years, equivalent to Techo-Bloc. The surface is slightly more susceptible to moss accumulation on the shaded north face of Avalon-area townhome courtyards because the texture holds more moisture. Annual pressure-washing at 1,800 psi maximum and a polymeric joint sand refresh every three to four years keeps it crisp.

Where Beacon Hill is the wrong call

Do not put Beacon Hill on a 4,000-square-foot Country Club of the South motor court. The irregular texture works at pedestrian and courtyard scale. At driveway scale, the eye reads it as “busy” instead of “refined,” and appraisers do not reward the premium. Beacon Hill is the patio, pool deck, and courtyard choice in Alpharetta — and the driveway choice only for smaller townhome-scale parcels under 1,200 square feet of pavement.

Two other Beacon Hill use cases carry real weight in Alpharetta. First, interior courtyards at custom infill homes in the downtown historic district around Academy Street and the Alpharetta City Center, where the paver is visible from the front porch and sets the tone before a guest rings the doorbell. Second, pool decks at luxury townhomes north of Old Milton Parkway, where the deck surface needs to read as stone against a mix of painted-brick walls and cedar pergola framing. Beacon Hill handles both settings without the manufactured repetition that flags the eye.

The ARB approval timeline — the variable most people ignore

Alpharetta’s architectural approval topology is not one process. It is three.

First, the City of Alpharetta Community Development office at 2 Park Plaza handles permits for all in-city parcels. In our experience this office turns paver driveway permits faster than unincorporated Fulton County — typically 7 to 10 business days for a residential-over-existing-footprint permit, versus 14 to 20 for comparable unincorporated work. The in-city process is a real advantage when you’re trying to hit a spring build window.

Second, the HOA architectural review boards. Windward, CCOS, White Columns, Hutchinson Farm, and Cambridge Parks all run their own ARB process with a review window that runs 3 to 4 weeks for first submission. CCOS is the strictest — they require stamped product cut sheets, a physical 12″x12″ sample panel, and drainage detail at any pitch change over 2%.

Third, the utility coordination. Alpharetta sits primarily on Georgia Power service, but the northern edge bordering Milton has a small Sawnee EMC footprint. The two utilities maintain separate inspection calendars for service drop coordination when a driveway project requires underground relocation. If your new paver driveway crosses the meter run, you need to know which utility you’re dealing with before you pull the permit.

Material-by-Material Head-to-Head (The Scorecard We Use on the iPad)

Here is the grid we walk every client through before they sign. Nothing on it is invented — every number comes from either the manufacturer’s published spec, a live distributor quote, or our own installation records from Alpharetta zip codes 30004, 30005, 30009, and 30022 between 2022 and 2025.

Cost per square foot installed (Alpharetta market)

• Belgard Dimensions / Artforms: $52 to $68
• Techo-Bloc Blu 60 Borealis: $46 to $62
• Unilock Beacon Hill Flagstone: $58 to $74

Service life before aesthetic degradation

• Belgard Dimensions: 35 years
• Techo-Bloc Blu 60: 30 years
• Unilock Beacon Hill: 30 years

Best-fit Alpharetta neighborhood

• Country Club of the South, White Columns: Belgard Dimensions
• Windward, Deerfield, Haynes Manor: Techo-Bloc Blu 60 Borealis
• Avalon-adjacent townhomes, downtown historic district: Unilock Beacon Hill Flagstone
• Hutchinson Farm, Ashebrooke, Martins Landing: Either Belgard or Techo-Bloc based on existing streetscape match

Color range (relative)

• Belgard: Strongest warm tones, deepest saturation, moderate gray range
• Techo-Bloc: Strongest cool-gray range, moderate warm tones, best palette for contemporary architecture
• Unilock Beacon Hill: Variegated natural tones only — not a palette-match product

ARB approval speed (our experience)

• CCOS ARB: Belgard clears fastest on established color families
• Windward ARB: Techo-Bloc clears fastest on the Shale Grey / Greyed Nickel palette
• City historic district: Beacon Hill clears fastest on stone-aesthetic justification

Distributor logistics

• Belgard: Kennesaw distributor, typically on the ground
• Techo-Bloc: Metro Atlanta coverage, specialty colors 4 to 6 weeks
• Unilock: Alpharetta market coverage via regional distributor, 2 to 3 week lead on Beacon Hill Flagstone

The Resale Math and How We Pick the Line on an Alpharetta Job

We work with three listing agents in North Fulton who specialize in the $1.5M-plus range across Alpharetta, Milton, and Johns Creek. Their pattern on paver-driveway resale premium is consistent enough to build into a bid proposal.

Inside Country Club of the South, a Belgard Dimensions motor court installation on a home listing at $2.1M to $3.5M has pulled an average 3.8% to 4.4% attributable premium when the driveway replaces an asphalt or stamped-concrete driveway that was the listing’s original surface. The premium collapses to 1.5% to 2% when the replacement paver matches the neighbor rather than upgrading from the neighbor’s material. The variable is upgrade delta, not brand.

Inside Windward, the same math runs with Techo-Bloc leading. A Blu 60 Borealis driveway on a $1.2M to $1.8M Windward list pulls 3.2% to 3.9% attributable premium, and the within-neighborhood color match is what the agents flag first in the property walk. A Belgard installation on the same home tends to underperform because it looks unrelated to the three closest neighbors’ driveways.

For the Avalon-adjacent townhome infill market, Beacon Hill courtyards pull a measurable premium at the offer stage — the agents call it the “outdoor room” effect — but it registers as a total-outdoor-experience premium of 2.5% to 3.5% rather than a driveway-specific number. The paver patio, pool deck, and courtyard are reading as one integrated outdoor-living asset, not a driveway line item.

The single biggest mistake we see: homeowners over-specifying the driveway brand without upgrading the rest of the outdoor surfaces. A $78,000 Belgard driveway at a home with stamped-concrete back patio and cracked pool coping reads as inconsistent. The buyer does not price it at $78K — they price it as a driveway that flags unaddressed deferred maintenance elsewhere. The resale premium lives in consistency across driveway, walkway, patio, and pool deck.

The four-question decision tree we run on every Alpharetta bid

After eleven years of installing paver driveways, pool decks, and courtyards across the North Fulton corridor, the decision tree we run is tight. Four questions, in order.

First, what is the three-closest-neighbor streetscape doing? If the three nearest homes all have warm-tone Belgard, the answer is almost certainly Belgard. If they have cool-gray Techo-Bloc, the answer is almost certainly Techo-Bloc. Within-neighborhood match beats brand preference every time at resale.

Second, what is the architecture telling us? Traditional shingle, brick, and stone — trends warm, trends Belgard. Contemporary modern with flat-roof elements — trends cool, trends Techo-Bloc. Hamptons-adjacent shingle with painted brick and cedar dormers — trends natural, trends Unilock Beacon Hill.

Third, what is the ARB going to do with our submission? CCOS has a three-to-four-week review and a strong Belgard precedent. Windward has a similar review window with a strong Techo-Bloc precedent. City historic district favors stone-aesthetic justifications. We factor the ARB speed into the schedule before we factor in the client’s color preference.

Fourth, what is the pool deck or patio going to be? If the homeowner is also redoing the pool deck, we often flip the driveway-deck specification — Techo-Bloc on both, or Belgard on both — so the property reads as one design decision. This is particularly important in Hutchinson Farm and Cambridge Parks where the tech-relocation buyer pool values consistency as a craftsmanship signal.

Two edge cases worth naming. If the client is building a new pool in the same construction window as the driveway, the pool shell coping sometimes locks you into a material family before the driveway bid is even signed. Techo-Bloc’s coping line integrates cleanly with the Blu 60 paver, so the driveway decision almost pre-decides itself if the pool is Techo-Bloc coping. The other edge case is a partial driveway replacement on a phased budget — replacing the motor court circle first and the approach the following year. In that case we sometimes hold for whichever line offers the best 12-month color-lot consistency guarantee, because you do not want a visible seam where two production runs of the same product were installed twelve months apart.

The tech-corridor relocation buyer pool coming into Alpharetta from Seattle, Chicago, and the Bay Area is driving a meaningful share of the new custom pool and hardscape spend on this side of GA-400. That buyer is not brand-loyal to Belgard or Techo-Bloc because neither brand has Pacific Northwest consumer recognition. What they’re reading at the walkthrough is consistency, texture, edge detail, and whether the property looks maintained or deferred. The paver brand on the driveway is a secondary signal — the craftsmanship across the whole outdoor surface envelope is the primary one.

Which circles back to the three-column grid we opened with. Belgard wins in CCOS. Techo-Bloc wins in Windward. Unilock wins at Avalon-adjacent townhomes and the historic district. Specify for the neighborhood, hold the 8-inch compacted base under driveways, run the polymeric joint sand correctly, and match the driveway to the patio and pool deck. That is the Alpharetta luxury subdivision test, and the scorecard rarely moves.