How much does an ADU cost in Menlo Park?

ADU construction in Menlo Park costs $150,000–$400,000 for a detached ADU. Garage conversions run $60,000–$120,000. JADUs start at $40,000. Costs vary by size, finishes, and permitting. Quartz Construction provides free ADU estimates.

How long does ADU construction take in Menlo Park?

ADU projects in Menlo Park typically take 4–10 months including permitting (2–4 months) and construction (3–6 months). Pre-approved ADU plans can reduce permitting time significantly.

What ADU types are allowed in Menlo Park?

California law allows detached ADUs, attached ADUs, garage conversions, and junior ADUs (JADUs) in Menlo Park. SB 9 and AB 2221 expanded ADU rights statewide. Quartz Construction handles all ADU types and full permit processing.

What is the rental income potential of an ADU in Menlo Park?

ADU rental income in Menlo Park ranges $2,000–$4,500/month depending on size and amenities. At these Bay Area rents, most ADUs achieve positive ROI within 5–8 years. Quartz Construction builds ADUs designed to maximize rental appeal.

Is Quartz Construction licensed to build ADUs in Menlo Park?

Yes. Quartz Construction holds CSLB #1003436 and is BBB A+. We have built 50+ ADUs across the Bay Area including Menlo Park. Call (650) 749-7436 for a free ADU consultation.

ADU Construction in Menlo Park, CA | Backyard ADUs & Garage Conversions

ADU Construction in Menlo Park, CA

Quartz Construction builds accessory dwelling units (ADUs) in Menlo Park, CA. Whether you need a detached backyard ADU, a garage conversion, or a junior ADU, our licensed team handles everything — design, permits, and construction. Licensed CSLB #1003436 | BBB A+ | 4.9⭐ (65+ Reviews)

ADU Types We Build in Menlo Park

Industry Resources & Standards:

Detached Backyard ADU — Separate, self-contained unit in your backyard. Ideal for rental income or family member housing.
Attached ADU — Addition to your existing home with separate entrance and utilities.
Garage Conversion ADU — Transform your Menlo Park garage into a fully permitted living space at lower cost.
Junior ADU (JADU) — Smaller unit within your existing home structure, permitting often simpler.
Above-Garage ADU — Second-story unit built over your existing garage.

ADU Cost in Menlo Park

ADU construction in Menlo Park costs $165,000–$400,000 for a detached ADU. Garage conversions are more affordable at $60,000–$120,000. The high cost of housing in Menlo Park means a well-built ADU typically rents for $2,500–$4,500/month, achieving full ROI in 5–8 years.

ADU Permits in Menlo Park

California state law (AB 2221, SB 9) allows ADUs on all single-family lots, including in Menlo Park. Menlo Park has streamlined its ADU permit process in compliance with state mandates. Quartz Construction handles all permitting, engineering, and inspections — you don’t need to navigate City Hall alone.

ADU Rental Income in Menlo Park

ADU rental income in Menlo Park typically ranges $2,200–$4,000/month depending on size and finishes. With Bay Area rents this high, most Menlo Park homeowners recoup their ADU investment within 6–8 years while simultaneously increasing their property value by $200,000–$400,000+.

Get a Free ADU Estimate in Menlo Park

Ready to build an ADU in Menlo Park? Quartz Construction provides free ADU consultations including site assessment, permit feasibility review, and construction estimate. Call (650) 749-7436 or fill out our contact form. CSLB #1003436 | BBB A+ | Serving Menlo Park and all Bay Area cities.

Call (650) 749-7436

Free ADU Estimate

What Our Clients Say

Join hundreds of happy Bay Area homeowners who trusted Quartz Construction & Remodeling for their projects.

      
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   65 Google reviews 
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   Perry Finch 
 
 
 
 Trustindex verifies that the original source of the review is Google. We’re so happy with the work Hila and her team did on our home addition. The new space flows beautifully with the existing structure, and the quality is clear in every finish. Finished on schedule and stress-free.
  
 
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   Joy Ruther 
 
 
 
 Trustindex verifies that the original source of the review is Google. Working with Ohad on our full home remodel was an incredible experience. He helped us through every decision and made sure everything turned out exactly how we envisioned. The team was easy to communicate with and super detail-focused. We still can’t believe how beautiful our home looks!
  
 
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   Ajay Mukhopadhyay 
 
 
 
 Trustindex verifies that the original source of the review is Google. We recently worked with Quartz Construction (Owner: Ohad) for a construction project to remodel our Bathroom and we couldn’t be more pleased with the results. From start to finish, their team demonstrated professionalism, and exceptional craftsmanship. They maintained clear communication throughout the project, kept us informed of progress and any potential changes, and delivered everything on time and within budget. Their quality of work is outstanding — every detail was handled with care and precision. What stood out most was their commitment to customer satisfaction. They were responsive to our questions, respectful of our space, and ensured that the final outcome matched our vision perfectly. If you're looking for a reliable, skilled, and trustworthy construction contractor, I wholeheartedly recommend Quartz Construction ( Ohad and his team) .They exceeded our expectations in every way. Ajay
  
 
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   debbie curley 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a fantastic experience working with Quartz Construction And Remodeling. Ohad Maloul the owner was professional communicative and a pleasure to work with from start to finish. His team repaired and painted my backyard pergola and the quality of their work was truly excellent. They were always on time, friendly and responsive to any questions I had throughout the process. I appreciated the clear communication and attention to detail. I’m excited to work with Ohad and his team on future projects and highly recommend them to anyone looking for reliable, high-quality construction or remodeling services.
  
 
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   Harry Lewis 
 
 
 
 Trustindex verifies that the original source of the review is Google. Hila managed our balcony addition project with care and precision. The design complements our home perfectly, and the build quality is outstanding. She communicated every step and made the whole process easy. We’re thrilled with the result!
  
 
      Posted on Google  
   
   Qi Lei 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had the chance to work with Ohad and his construction team on a recent home project, and I was really impressed. Ohad is professional, easy to communicate with, and genuinely cares about the quality of the work. The crew showed up on time, kept the work area clean, and finished the job on schedule. It’s hard to find contractors who are reliable and transparent these days, but Ohad delivered on everything he promised. Would definitely recommend if you’re looking for someone who takes pride in their work and keeps things straightforward.
  
 
      Posted on Google  
   
   Boris Tyron 
 
 
 
 Trustindex verifies that the original source of the review is Google. We’re so happy with the work Quartz Construction did on our backyard. Ohad’s team designed and built a gorgeous deck and patio that turned the area into a dream space. The quality and detail are fantastic. Highly recommend!
  
 
      Posted on Google  
   
   Gloria Collin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Quartz Construction built the most beautiful pergola in our backyard, thanks to Ohad. He was easy to work with, listened to our needs, and delivered a structure that’s both stylish and durable. We now have a shaded space where we can relax and entertain guests.
  
 
      Posted on Google  
   
   Dustin Walsh 
 
 
 
 Trustindex verifies that the original source of the review is Google. They built a beautiful, durable pergola that fits our outdoor space perfectly. Hila paid close attention to both style and quality. We now have the perfect spot for lounging, gatherings, and enjoying every season.
  
 
      Posted on Google  
   
   Paul Wilins 
 
 
 
 Trustindex verifies that the original source of the review is Google. We feel incredibly lucky to have worked with Hila. She made the ADU process simple and stress-free, handling everything with care and professionalism. The final space is perfect—efficient, elegant, and exactly what we hoped for. Big thanks to her and the whole crew!
  
 
  
  
 
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