Accessory Dwelling Units · Pasadena

ADU builders in Pasadena

Guest houses, studios, and income units — designed, permitted, and built with the same standard as the main residence.

Licensed General Contractor #1122447Studio on E. Colorado Blvd, PasadenaPlans & permits managed
01 Overview

An ADU is not an afterthought. It is a second architecture on your property, and it deserves the same care.

An accessory dwelling unit is one of the smartest ways to add living space and long-term value to a Pasadena property — as a rental, a place for family, or a dedicated workspace.

Every lot is different. ADU rules depend on zoning, lot size, setbacks, and whether a property is in a historic district. We review your property, explain what is feasible, and coordinate designers and engineers so your project moves smoothly through plan check and construction.

ADU construction by Weiss Construction in Pasadena
Accessory dwelling unitPasadena, California
02 Scope of work

Complete ADU delivery, from feasibility to keys

01

Detached Backyard ADUs

Stand-alone units with their own entrance and full amenities.

02

Attached ADUs

Units connected to your home with private access.

03

Garage Conversions

Turn an underused garage into a comfortable living space.

04

Junior ADUs (JADUs)

Efficient units created within your existing home.

05

Site Work & Utilities

Foundations, trenching, and utility connections.

06

Plans & Permits

Coordination of design, engineering, and city approvals.

Construction process by R&A Weiss General Construction in Pasadena
03 The process

Clarity at every stage

01

Free consultation

We visit your property, understand your goals, and assess what is possible.

02

Scope & written estimate

A detailed scope and an honest budget — before any work begins.

03

Permits & construction

We manage plans, permits, and inspections while our crew builds with precision.

04

Final walkthrough

Every detail reviewed together, until the result meets your standard and ours.

04 Why Weiss

Built on craft, honesty & respect

01

Craftsmanship

Hands-on construction experience applied to every detail, from structure to the final finish.

02

Transparency

Clear communication and honest budgets. No surprises — only solid, dependable work.

03

Accountability

A licensed general contractor with a studio in Pasadena and one point of contact throughout.

04

Respect

For your home, your neighbors, and the architectural character of Pasadena.

05 Service area

Pasadena & the San Gabriel Valley

We provide ADU construction from our studio on East Colorado Boulevard, serving homes throughout Pasadena and the surrounding communities.

PasadenaAltadenaSouth PasadenaSan MarinoArcadiaLa Cañada FlintridgeSierra MadreEagle RockSan Gabriel
Can I build an ADU on my Pasadena property?

Most single-family lots in Pasadena can accommodate some type of ADU, but size and placement depend on your zoning and lot. We can walk your property and explain your options before you commit to a design.

How long does an ADU take to build?

Timelines depend on the size of the unit, the design, and the permit process. We give you a realistic schedule during the estimate and keep you updated at every stage.

Do you handle permits?

Yes. We coordinate permit applications and inspections so you do not have to manage the process alone.

Can I convert my garage into an ADU?

Often, yes. Garage conversions are one of the most cost-effective ADU options. We will evaluate the structure and requirements during our visit.

Free estimate

Let’s build something timeless.

Tell us about your project and receive a free, no-obligation estimate from a licensed Pasadena contractor.