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Top-Rated Architects/engineers in Porter Ranch - Updated Nov 2026

Avatar for PETER T ERDELYI & ASSOCIATES INC
PETER T ERDELYI & ASSOCIATES INC
4.8(
12
)
Draftsperson/CADDArchitect

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1976

Warranties offered

Credit card accepted

Whether you're upgrading an existing structure or building from the ground up, Peter T. Erdelyi & Associates, Inc has the expertise to oversee your project through completion. We have designed more than 10,000 structures in the Los Angeles area over the past four decades; from apartment buildings to new single family homes to additions and remodels both for residential and commercial clients. Our team of professional engineers, drafters, expeditors and project staff will deliver plans that withstand the test of time.

Beverly Hills
Pacific Palisades
Culver City
1 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Pristine Construction Inc
Pristine Construction Inc
4.9(
212
)
Construction Manager

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Pristine Construction handled everything from design, city permits, construction and any extras we needed.  Pristine has a crew of employees and they only take a limited number of jobs so they can provide quality service to their customers.   They usually deal with referrals by former clients and are constantly busy.  Once we met Nathan and saw his level of commitment, Pristine is well worth waiting for!!
Nathan Moses provided the design.  He spent 3 hours with us at the appliance store to select the bathroom hardware, he spent an hour with me at the window store selecting windows and doors and he spent about 2 hours with us at the tile store selecting tile for the bathrooms............all about 1 1/2 months before we even began the project.  They only had a $1000 retainer and he spent all of this time with us!  This is the level of commitment you get with Pristine!
As with any older house you can expect the unplanned or unexpected.  We had to replace the sewer system because it was leaking,  fix broken drainage pipes and add french drains but at each step, Pristine said, "No problem" and had a worker on site the next day.  We didn't think the AC was strong enough to cool our western exposure bedroom, Nathan had the AC guy out the next day talking about solutions or removing our reservations.  We thought the room needed a third coat of paint in one room, no problem.  Everything was perfect.
As I mentioned above, Nathan Moses and Mike Malka are fantastic.  Mike will be onsite every day once the construction moves 'inside'.  We were fortunate to have both Nathan and Mike come to the site every single day that workers were here.  
Pristine took care of the architect plans, city permits, inspections and coordinating everything.   Sharona would call every day to tell us what was going to happen the following day so we always knew what to expect.
We decided to add a spiral staircase and deck on top of the bathroom, Nathan researched and found comparative prices for the staircase.  We ended up going with a company because we just connected with the owner from the start!  It turned out to be a friend of Nathan....should've known!!  Another advantage with Pristine is you pay direct for the tile and appliances using their contractor's discount and don't get charged an additional 20% as some contractor have done in the past.  Why should I pay 20% more to the contractor depending on the cost of a bath tub?  Pristine doesn't do that!
Their work is outstanding! and they stand behind the work  For example, I selected the tile for the shower nook and Faustino spent hours putting it together but once done, I didn't like it at all.  The Pristine team says, "We want you happy."  He came back on Sunday, took out all the tile and manually cut small pieces based on a custom design I drew and didn't think twice about making it absolutely perfect!!  Amazing teamwork and wonderful group to work with!  (And we weren't charged extra!!!!)
You will love their work, their staff and entire team of professionals.  There was never a disagreement or negative response.  The team has a positive attitude, great work ethic and outstanding results.  We hesitated for 15 years about doing this room addition because we heard terrible remodel stories!!   If only we knew about Pristine Construction but sure glad we were referred.  They are the best!
 The cost that I listed above is for room addition, additional closet built in master bedroom and guest room, new addition walk-in, complete remodel guest bath, new AC in 4 rooms, new sewer line, city permits.
"
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+16

Response time7 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Eagle View Remodeling
Eagle View Remodeling
4.7(
89
)
ArchitectDraftsperson/CADD

Serving Porter Ranch, CA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1989

Free estimates

Emergency services offered

"Amir is amazing contractor. I would highly recommend him as he is there to actually help you in any project based on my analysis of him and his company. I'm am using him for my next project because I trust him. Not everyday you can that in the construction world."
New Constraction
New Constraction
New Constraction
New Constraction
New Constraction

+145

Response time8 hrs
Response rate99%
67 neighbors recently requested a quote
Avatar for RR Building Design
RR Building Design
5.0(
27
)
Draftsperson/CADD

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Franco and his father Rene are experienced architects who came out to the site promptly, game planned a way to get approval for a multi unit triplex from duplex on the spot, and followed through each step of the phase. We successfully were able to get all city approvals in the city of LA. A+ Rating"
2nd Story addition
New ADU
isometric
front
interior

+15

Response time4 days
Response rate92%
2 neighbors recently requested a quote
Avatar for VOORHEIS & VOORHEIS, INC.
VOORHEIS & VOORHEIS, INC.
4.9(
70
)
Land Surveyor

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1974

Free estimates

Emergency services offered

"Jeff was great to work with! He responded quickly to my inquiry about needing a survey, his crew who came out to do the survey was very friendly and provided me with a lot of information, and his price was extremely fair for the work performed. I highly recommend this company, and have even passed along his information to my architect to refer clients to in the future!"
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1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Signature Group Architects
Signature Group Architects
5.0(
6
)
ArchitectArchitect - For Business

Serving Porter Ranch, CA and surrounding areas

Approved

In business since 1983

Customers say: Quick response

"As an owner builder, Richard offered helpful information and was prompt in submitting a detailed cost estimate/breakdown needed for my project budget. His experience both as an architect and contractor will be most helpful."
Architect
Architect
Architect
Architect
Architect

+31

Response time3 days
Recommended by100%of homeowners
Avatar for Alpha Structural, Inc.
Alpha Structural, Inc.
4.6(
241
)
Engineer - Structural

Serving Porter Ranch, CA and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

"Excellent experience again with Alpha Structural. Charlie Rosenkranz came to see the 3-story apartment building in West Hollywood. We discussed what the soft story retrofit plans will likely include. He's knowledgeable and experienced. We appreciated his professional no-pressure approach and answering our questions. Alpha performed an exploratory investigation of the support structure, as architectural plans were not available. They engineered the plans with city approval. They then consulted with us and provided the approved THP (Tenant Habitability Plan) paperwork. Production Manager Dave Schlaich and Job Supervisor Seth Price met me before construction. Dave went over the approved plans and explained the work that would be performed, and the purpose. They both answered all my questions. Lawrence and Antonio were the main work team. They were very pleasant and answered all our questions. Both had great explanations with Lawrence being very detailed. Seth provided timely progress reports by phone and text. He answered all questions, and provided contacts for automatic shut-off gas valves and stucco work. Despite Covid-19, they scheduled and passed inspections, and completed the work in under a month. We've seen projects by other companies stuck in limbo for months with no progress, so we chose Alpha to avoid complications. They removed all debris, and left the property clean. The tenants and neighbors had no complaints. Daniel Aparicio also explained various issues. Communication with everyone, including the office staff, was excellent. We're very pleased with this experience."
Basement Addition
Basement Expansion
Caisson Supported Retaining Wall
Cantilevered Deck Design Build
Deck Expansion and Slope Failure with Retaining Wall

+323

Response time10 hrs
Response rate100%
10 neighbors recently requested a quote
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