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One team, start to finish. Phillips Group plans, designs, permits, and builds ADUs, custom homes, spec homes, additions, and full renovations across California and Arizona — no handoffs, no finger-pointing.
Detached, attached, and garage-conversion accessory dwelling units — from feasibility and design through permitting and finished build. California's smartest way to add space, rental income, or family room.
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 — handling the paperwork most builders dread.
Our own crews build it — on schedule, on budget, with one team accountable 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.
Your designer and your builder are the same team — fewer surprises, tighter budgets.
Plan check, agencies, and approvals managed for you — the part most builders avoid.
Fully licensed and insured, with a real track record you can stand behind.
They designed it, permitted it, and built it — start to finish, one team. We always knew exactly who to call.— Homeowner, Altadena · Replace with a real client review
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.
