Mighty Buildings Driveway & Pavers Nationwide

Mighty Buildings Driveway & Pavers: The Sunnyvale Owner’s Guide

We stock and install Mighty Buildings-compatible driveway pavers and base systems in Sunnyvale, with typical paver driveway installations running $7,000-$18,000 and concrete driveway replacements at $4,500-$12,000 depending on substrate condition and access. Most Mighty Buildings owners in Sunnyvale first notice trouble when settling or staining appears where the driveway meets the modular foundation, or when Belgard or Techo-Bloc pavers specified in the original build start shifting after winter rains. We carry common Mighty Buildings paver profiles and can match most installations from 2019 onward.

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Which Mighty Buildings Models This Applies To

Mighty Buildings uses standardized driveway and paver specs across its ADU and residential lines, but the critical compatibility point is the foundation-to-hardscape transition detail. Models from the 2019-2023 production runs typically specify a 6-inch compacted aggregate base with Belgard Catalina or Techo-Bloc Eva pavers at 2-3/8-inch thickness. The 2024 and newer builds shifted to a permeable paver specification for California Title 24 compliance, which changes both the base depth and the edge restraint system.

To identify your exact spec, check the build documentation folder for the “Site & Hardscape” sheet - the paver SKU and base detail are listed there. If you don’t have the folder, measure a single paver (standard is 4-by-8-inch or 6-by-6-inch) and note whether the surface is smooth or tumbled; this tells us whether you need the original OEM profile or whether a quality aftermarket equivalent from the same manufacturer will lock in correctly. We source both, and we’ll show you the sample before we quote.

Signs Your Mighty Buildings Driveway & Pavers Is Failing

• Pavers rocking or tilting under foot or tire. This usually means the bedding sand has washed out or the base compacted unevenly. In Sunnyvale’s clay-heavy soils, especially near Lakewood Village where we see this often, seasonal expansion pulls the aggregate base apart and leaves voids beneath the pavers.
• Staining or efflorescence whitening the surface. White powdery residue indicates moisture migrating through the paver body and depositing salts. On Mighty Buildings installations, this often traces to an improperly sloped base that traps water against the modular foundation wall.
• Edge restraint pulling away from the perimeter. The plastic or aluminum edging that locks the field in place degrades in UV exposure. Once it bows, the interlock between pavers fails and the pattern spreads.
• Sinking or settlement at the garage threshold or foundation interface. This is the most expensive symptom to ignore. It typically means the geotextile fabric failed or was omitted, allowing the native soil to mix with the imported base and lose bearing capacity.
• Weeds or grass growing through joints. Polymeric sand breakdown lets seeds establish, but the underlying cause is usually joint sand loss from pressure washing at too narrow a fan angle or excessive water velocity.

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After

Replacement Cost & What’s Included

For Sunnyvale Mighty Buildings owners, here’s how the numbers break down:

The wide range on driveway work reflects three variables: whether we can access the site with a mini-excavator or must hand-dispose the old material, whether the substrate needs geogrid reinforcement for the clay soils common east of Mathilda Avenue, and whether the original Mighty Buildings foundation detail requires a custom transition pour. Under Clause 1 of The Haven Standard, we deliver a written line-item quote before any work starts - material costs, labor hours, and any subcontractor scope listed separately. Our 365-Day Done Right Promise covers the installation, and we pull all required permits with the City of Sunnyvale Building Division.

DIY or Call Us?

There’s no high-tension danger in paver work, but there is a costly mistake we see regularly: homeowners in Sunnyvale pull up a few settled pavers, add bagged sand from the hardware store, and tamp them back down. The problem is that bedding sand and joint sand are different gradations - bedding is coarser, joint sand is finer and often polymeric. Mix them up and you get renewed settlement within one rainy season, plus the pavers won’t interlock properly.

What you can safely check: lift one paver at the edge and look for standing water or mud in the base layer. If it’s dry and granular, the base is likely sound. If it’s soupy or smells of anaerobic decomposition, the drainage layer has failed and the fix requires removing the field, regrading, and reinstalling.

We don’t recommend DIY on the base repair. The compaction spec is 98% modified Proctor density, tested with a nuclear gauge - not equipment a homeowner keeps in the garage. Call us at (650) 405-3637 and we’ll scope it, photograph what we find, and give you the written price before you decide.

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