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One point of contact, start to finish. Phillips Group plans, designs, permits, and builds ADUs, custom homes, spec homes, additions, and full renovations across California and Arizona.
Detached, attached, and garage-conversion accessory dwelling units — from feasibility and design through permitting and finished build. A flexible way to add living space, rental income, or room for family.
Ground-up custom homes tailored to your lot, your budget, and the way you actually live. We manage architecture, engineering, permitting, and construction so you have a single point of accountability throughout.
Developer spec builds engineered for the market and the margin. Smart design decisions, tight cost control, and a finished product that sells — for investors and builders scaling their portfolio.
Room additions, second stories, and whole-home expansions that blend seamlessly with your existing home — matched rooflines, matched finishes, and structural work done right the first time.
Full gut renovations and rehabs — kitchens, baths, and whole-home transformations taken back to the studs and rebuilt. From dated to dialed-in, inside and out.
Feasibility, site review, budgeting, and scope — so you know what's possible before you commit.
Architectural design and engineering tailored to your lot, lifestyle, and budget.
We navigate plan check, agencies, and approvals — so your timeline stays predictable.
We manage the full build — on schedule, on budget, with one point of accountability start to finish.
Most projects lose time and money in the gap between the architect, the engineer, and the builder. Phillips Group closes that gap — we design it and we build it, so accountability never changes hands. Licensed under ROC 357223 and rooted in Altadena.
Design and construction under one accountable partner — fewer surprises, tighter budgets.
Plan check, agencies, and approvals — managed for you.
Fully licensed and insured, with a real track record you can stand behind.
They designed it, permitted it, and built it — start to finish. We always knew exactly who to call.— Homeowner, Altadena
Tell us about your project — ADU, custom home, spec build, or addition. We'll set up a consult and walk you through what's possible.
