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Plenum Architecture

Architecture firm · Oakland, CA · reviewed since 2025

How the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 69%96+66.5Reliability 31%89+27.4Experts Score= 94Not enough data for value, replies to reviews; its weight is shared by the others.Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.94SCORE
AGradeLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#1 of 12 architectsPosition by Experts Score among all companies we track in this category. · better than 100%
5.0 ★★★★★ 19 Google reviews · 3 photos
100%five-star reviews
5.00★last 12 monthsAverage stars on reviews from the last 12 months only.
0%1–2★, last 19 reviewsShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
53%reviews answered by the owner
Oct 2026latest review

Plenum Architecture at a glance

Google reviewers rate Plenum Architecture five stars based on nineteen reviews, with the owner responding to fifty-three percent. Clients frequently cite the firm's assistance with city grant applications, permit processing, and ADA compliance projects. Recurring themes include clear communication, professional guidance through complex bureaucratic steps, and efficient project completion. No common criticisms appear in the provided excerpts, which consistently describe positive interactions and successful outcomes for various residential and commercial builds.

  • Google rating: 5.0 out of 5 from 19 reviews (100% five-star).
  • Reviews on this page: 19 Google reviews (19 with written comments).
  • Owner responses: the business replied to 53% of reviews.
  • Most recent review: October 15, 2026.
  • Service: Architect serving Oakland, California.

Data from Google, last updated November 11, 2026.

Score profile vs other architects

Score per factor (100 = best)Each factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and satisfaction; weakest: reliability.

Satisfaction96Reliability89Craft & service–Value–Momentum100Replies to reviews–Satisfaction: 96 (median 85)Reliability: 89 (median 85)Momentum: 100 (median 100)
Plenum ArchitectureArchitects median0 = centre, 100 = best
SatisfactionSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.Plenum Architecture: 96/100 on this factor. Category median: 85.A
96
ReliabilityReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.Plenum Architecture: 89/100 on this factor. Category median: 85.A
89
Craft & serviceCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Not enough reviews for this factor yet. Category median: 97.–
–
ValueValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 99.–
–
MomentumMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.Plenum Architecture: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.Not enough reviews for this factor yet. Category median: 47.–
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Bar = this company · dark tick = category median.

Star ratings

19 Google reviews we collected

  • 5 stars19100%
  • 4 stars00%
  • 3 stars00%
  • 2 stars00%
  • 1 star00%

Praise vs complaints

Phrases our text analysis found in 19 written reviews

  • Praise30100%
  • Complaints00%

PriceGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.

Price verdicts customers left with their Google review

  • Great price267%
  • Reasonable00%
  • Overpriced00%
  • Not sure133%

Topic share

How often each topic comes up in the written reviews

  • Staff & attitude930%
  • Would recommend620%
  • Quality & results517%
  • Speed & response517%
  • Communication310%
  • Honesty & trust27%

What customers talk about

We read 19 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.

  • “Thank you Ommar for your help and professionalism, I almost gave up on the grant from the city of Oakland because of the process being complicated b…”
  • “If you're looking for a talented, reliable, and innovative architect for your ADU or any residential project, look no further than Plenum Architect.”
  • “Working with Plenum Architecture has been a great experience for Albert Construction Inc.”
  • “We brought Plenum Architects onto our project midstream, and they immediately rose to the challenge of navigating numerous complex and unfamiliar contingencies.”
  • “Communication throughout the process was clear and timely.”
  • “Omar and Bridget are the kind of people you want to work with, not just because they’re great architects, but because they’re genuinely good people.”

People customers mention

  • Omar 6 reviews
  • Bridget 3 reviews

praise complaint · found by our text analysis, Google review wording unchanged.

Recent reviews

Ethan1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 3 weeks ago★★★★★

Omar was instrumental in securing my façade improvement grant from the city. When they were delaying things he pushed them to deliver.

Not sureService not listed
ABDUL11 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Thank you Ommar for your help and professionalism, I almost gave up on the grant from the city of Oakland because of the process being complicated but Ommar reached out and helped me until the end.

David1 reviewTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Plenum to the rescue! Great staff and excellence in getting through a challenging City program. Highly recommended.

Adesuwa4 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a month ago★★★★★

Our business received a FTIP grant and we had the pleasure of working with Plenum Architecture to navigate the process. Plenum staff was always available to answer questions, to help with troubleshooting and making sure that the process was smooth and seamless. Meeting grant requirements and deadlines while…

Tiffany13 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a year ago★★★★★

We brought Plenum Architects onto our project midstream, and they immediately rose to the challenge of navigating numerous complex and unfamiliar contingencies. The team was the penultimate in professionalism...thorough, attentive, and committed to excellence. They submitted our permit package with every detail…

OFFICE2 reviewsTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · a year ago★★★★★

I want to express my sincere appreciation for Omar and Plenum Architecture. Since connecting with Omar, I’ve been incredibly impressed by his professionalism and kindness. He is the kind of person you want to connect with for any project, they consistently go above and beyond in their dedication to the community.

Photos

Customer reviews

5.0 ★★★★★ 19 reviews on Google · rating breakdown

Reviews from Google, shown as published (original wording, unedited).

Team members customers mention
Filter by topic — each topic is highlighted in the reviews in the same color
Ethan Ashley1 reviewTotal number of Google reviews Ethan has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Omar was instrumental in securing my façade improvement grant from the city. When they were delaying things he pushed them to deliver.

  • Price assessment: Not sure
  • Services: Service not listed
  • Design style: Other
ABDUL TALEB11 reviewsTotal number of Google reviews ABDUL has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Thank you Ommar for your help and professionalism, I almost gave up on the grant from the city of Oakland because of the process being complicated but Ommar reached out and helped me until the end.

Response from the owner · a month ago

Hello Abdul, Thank you for being a valued community partner. It was truly a pleasure helping bring important upgrades to your business through the Facade and Tenant Improvement Program. Your grocery market provides an essential service to the community, offering local residents access to food and everyday necessities. By investing in your business, you are helping strengthen the neighborhood and ensure that community members continue to have access to the resources they need close to home. On behalf of the FTIP program, we thank you for your commitment to Oakland and wish you continued success. We look forward to seeing your business thrive and continue serving the community for years to come. Best regards,

David Weltin1 reviewTotal number of Google reviews David has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Plenum to the rescue! Great staff and excellence in getting through a challenging City program. Highly recommended.

Response from the owner · a month ago

Thank you for being an awesome program recipient and a partner in revitalizing Oakland's forgotten small business corridors! Thank you for your support.

Adesuwa Idehen4 reviewsTotal number of Google reviews Adesuwa has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Our business received a FTIP grant and we had the pleasure of working with Plenum Architecture to navigate the process. Plenum staff was always available to answer questions, to help with troubleshooting and making sure that the process was smooth and seamless. Meeting grant requirements and deadlines while running a business can be an arduous task. Having Plenum’s support every step was a great help!

Response from the owner · a month ago

Adesuwa, It was a pleasure helping you successfully navigate the program. Being part of the effort to revitalize Oakland's small business corridors has been incredibly rewarding, and we're grateful that you entrusted us with your project. Thank you for the opportunity to support your vision and contribute to the continued growth and vibrancy of Oakland's business community. Wishing you continued success

Darius West1 reviewTotal number of Google reviews Darius has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Working with Plenum Architecture has been a great experience for Albert Construction Inc. As a small Oakland-based general contractor, one of my goals has been to grow my company and become better prepared to compete for larger public and prevailing-wage projects. Plenum Architecture has helped me step up to that next level, especially by giving me the opportunity to gain experience working on FTIP-funded projects and understanding the requirements that come with prevailing-wage contracts. Their team has helped me better understand compliance, documentation, labor requirements, project coordination, and the expectations that come with performing public-funded construction work. For a small business contractor, getting the opportunity to build this type of experience is extremely valuable. I appreciate Plenum Architecture for working with local small businesses like Albert Construction Inc. and helping create a pathway for us to grow, strengthen our capabilities, and compete for larger opportunities. I look forward to continuing to work with Plenum Architecture and building on the experience and relationship we have developed. — Darius West Owner, Albert Construction Inc. “Service That Nails It.”

  • Price assessment: Great price
  • Services: Architectural consultation
  • Design style: Classic, Traditional, Other
Response from the owner · a month ago

Darius , Thank you for being a valued community partner in revitalizing oaklands forgotten small business corridors.

Maykel Poveda5 reviewsTotal number of Google reviews Maykel has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Omar is a great person always helping … thanks Omar

  • Price assessment: Great price
  • Services: Site master planning, Adaptive reuse & historical renovation services, Project management
Tiffany Lach13 reviewsTotal number of Google reviews Tiffany has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

We brought Plenum Architects onto our project midstream, and they immediately rose to the challenge of navigating numerous complex and unfamiliar contingencies. The team was the penultimate in professionalism...thorough, attentive, and committed to excellence. They submitted our permit package with every detail carefully addressed, and what typically requires multiple rounds of review with our local building department was approved in the very first round. Thanks to their dedication, we now have our permit in hand and are deeply grateful for the skill and diligence they brought to the process. Without hesitation, we would choose Plenum again for future projects.

Response from the owner · a year ago

Thank you Tiffany for such a kind and generous review. You were ideal clients in that you were very responsive and paid our invoices quickly :) So thank you! and hope you enjoy the cottage, finally, soon!

OFFICE UNITY CONTRACTORS2 reviewsTotal number of Google reviews OFFICE has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

I want to express my sincere appreciation for Omar and Plenum Architecture. Since connecting with Omar, I’ve been incredibly impressed by his professionalism and kindness. He is the kind of person you want to connect with for any project, they consistently go above and beyond in their dedication to the community.

Response from the owner · a year ago

Thank you for your kind words its a pleasure working with Local Women General Contractors. Plenum will always prioritize small businesses

jackie vargasLocal Guide · 16 reviewsTotal number of Google reviews jackie has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Omar and Bridget are the kind of people you want to work with, not just because they’re great architects, but because they’re genuinely good people. They deeply care about the communities they’re part of and try to really understand the people/history/dynamics that shape a place. More importantly, they respect it. Even outside of a work setting, Omar and Bridget bring a kind of ease and sincerity that makes you feel like you’re in good hands. I have no doubt that anyone working with them will come away feeling supported.

Response from the owner · a month ago

Jackie, It was a pleasure having you work for Plenum Architecture. We look forward to see your future accomplishments.

Jorge Ayala6 reviewsTotal number of Google reviews Jorge has written across all businesses on Google Maps, not just this one.
Review from Google · view on Google
★★★★★

Hiring Plenum Architects for our ADU project was one of the best decisions we've made. From the initial consultation to the final design, their professionalism, creativity, and attention to detail were outstanding. They took our vision and elevated it, creating a space that is not only functional but also beautifully designed. Communication throughout the process was clear and timely. They walked us through every step, offered smart design solutions, and made sure the final result exceeded our expectations. Their understanding of local building codes and permitting also saved us a lot of stress. We couldn't be happier with the finished product. Our new ADU feels like a natural extension of our home, and we’re constantly receiving compliments from friends and neighbors. If you're looking for a talented, reliable, and innovative architect for your ADU or any residential project, look no further than Plenum Architect. Truly a 5-star experience!

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