New Key Construction
New Key Construction
Located in Walnut Creek, New Key Construction designs and builds residences across the Bay Area. It brings architecture, interiors and construction together under one roof.
Last Updated October 3, 2026.
Business Highlights
- It lists license number 1050306.
- It lists a 2023 NARI CotY regional award for residential historical renovation and restoration.
- It lists a 2023 NARI CotY regional award for residential kitchen projects.
Service Area
Walnut Creek, Danville, Lafayette, Orinda, Moraga, Alamo, Piedmont, Blackhawk, Diablo, San Ramon, Pleasanton, Pleasant Hill, Oakland, Concord, Berkeley, Alameda, Dublin and Martinez; Europe for private-client projects with local partners.
Active Business Listing
New Key Construction is one of 10 concrete & masonry contractors ProsGrade lists in Walnut Creek, California.
9 services listed, including Design-build, Interior design and Whole-home remodel. Open weekdays, closed on weekends. Rated 4.9 from 29 reviews.
- Verified listing details
- Service information
- Customer review signals
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- Public contact information
- Published local profile
How This Business Compares
How New Key Construction compares with the other 9 concrete & masonry contractors on ProsGrade in Walnut Creek, using public Google ratings and review counts.
- Rated 4.9 on Google, at or above the 4.9 average of other Walnut Creek concrete & masonry contractors on ProsGrade.
- One of 8 Walnut Creek concrete & masonry contractors on ProsGrade rated 4.7 or higher from at least 10 reviews.
Services Covered
9 services- Design-buildarchitecture, interiors and engineering; permitting, trades and schedule managed in-house
- Interior designmaterials, lighting, joinery and finishes; photoreal 3D renderings of key rooms
- Whole-home remodelstructural rework, Title 24 compliance, finishes, joinery and millwork
- Home additionssecond-story and primary-suite additions; kitchen and family-room expansions
- ADU builderdetached, attached and garage-conversion units; utility upsizing and meter splits
- Landscape designdrought-tolerant planting and irrigation; hardscape, pavers, stone, fencing and lighting
- Kitchen remodelingcustom cabinetry and millwork, stone counters and integrated appliances
- Bathroom remodelingjoinery, stone and calm light
- Custom home buildssite-specific home design and construction
Reviews
What customers say
Several customers praise careful workmanship and organized project coordination; one customer says a project manager and foreman kept the family frequently updated during a workshop-to-ADU conversion that took five months. A customer, however, reports that most design emails went unanswered and the presented options missed key priorities, including a requested vaulted ceiling.
Customer Reviews
Ruby Gill
Mark Sithi
Paul Boccellari
Ashley Ortega
Marie Ramagli
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Frequently Asked Questions
How long does New Key Construction's design phase take?
Design takes from a few weeks to a few months, depending on scope. The construction schedule is set together before the first permit is pulled.
What construction updates does New Key Construction provide?
The construction process includes a Gantt-tracked schedule, weekly walkthroughs and an open invitation to the site.
Does New Key Construction carry out additions while families remain at home?
Most additions take place while the family lives in the home. Demolition, structural work and finishes are sequenced to keep the rest livable and manage air, dust and noise.








